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Posted to commits@flink.apache.org by tw...@apache.org on 2017/05/02 13:32:41 UTC
[3/3] flink git commit: [FLINK-6409] [table]
TUMBLE/HOP/SESSION_START/END do not resolve time field correctly
[FLINK-6409] [table] TUMBLE/HOP/SESSION_START/END do not resolve time field correctly
This closes #3799.
Project: http://git-wip-us.apache.org/repos/asf/flink/repo
Commit: http://git-wip-us.apache.org/repos/asf/flink/commit/2d33c0be
Tree: http://git-wip-us.apache.org/repos/asf/flink/tree/2d33c0be
Diff: http://git-wip-us.apache.org/repos/asf/flink/diff/2d33c0be
Branch: refs/heads/master
Commit: 2d33c0bead3f13417acff0f18f78a5c2c5bef22e
Parents: 464d6f5
Author: twalthr <tw...@apache.org>
Authored: Fri Apr 28 17:17:30 2017 +0200
Committer: twalthr <tw...@apache.org>
Committed: Tue May 2 15:31:35 2017 +0200
----------------------------------------------------------------------
.../calcite/sql/fun/SqlGroupFunction.java | 103 +
.../calcite/sql/fun/SqlStdOperatorTable.java | 2133 +++++++
.../apache/calcite/sql/validate/AggChecker.java | 225 +
.../calcite/sql2rel/AuxiliaryConverter.java | 79 +
.../calcite/sql2rel/SqlToRelConverter.java | 5356 ++++++++++++++++++
.../scala/batch/sql/WindowAggregateTest.scala | 31 +
tools/maven/suppressions.xml | 2 +
7 files changed, 7929 insertions(+)
----------------------------------------------------------------------
http://git-wip-us.apache.org/repos/asf/flink/blob/2d33c0be/flink-libraries/flink-table/src/main/java/org/apache/calcite/sql/fun/SqlGroupFunction.java
----------------------------------------------------------------------
diff --git a/flink-libraries/flink-table/src/main/java/org/apache/calcite/sql/fun/SqlGroupFunction.java b/flink-libraries/flink-table/src/main/java/org/apache/calcite/sql/fun/SqlGroupFunction.java
new file mode 100644
index 0000000..a57cf10
--- /dev/null
+++ b/flink-libraries/flink-table/src/main/java/org/apache/calcite/sql/fun/SqlGroupFunction.java
@@ -0,0 +1,103 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to you under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.calcite.sql.fun;
+
+/*
+ * THIS FILE HAS BEEN COPIED FROM THE APACHE CALCITE PROJECT UNTIL CALCITE-1761 IS FIXED.
+ */
+
+import org.apache.calcite.sql.SqlFunction;
+import org.apache.calcite.sql.SqlFunctionCategory;
+import org.apache.calcite.sql.SqlKind;
+import org.apache.calcite.sql.SqlOperatorBinding;
+import org.apache.calcite.sql.type.ReturnTypes;
+import org.apache.calcite.sql.type.SqlOperandTypeChecker;
+import org.apache.calcite.sql.validate.SqlMonotonicity;
+
+import com.google.common.collect.ImmutableList;
+
+import java.util.List;
+
+/**
+ * SQL function that computes keys by which rows can be partitioned and
+ * aggregated.
+ *
+ * <p>Grouped window functions always occur in the GROUP BY clause. They often
+ * have auxiliary functions that access information about the group. For
+ * example, {@code HOP} is a group function, and its auxiliary functions are
+ * {@code HOP_START} and {@code HOP_END}. Here they are used in a streaming
+ * query:
+ *
+ * <blockquote><pre>
+ * SELECT STREAM HOP_START(rowtime, INTERVAL '1' HOUR),
+ * HOP_END(rowtime, INTERVAL '1' HOUR),
+ * MIN(unitPrice)
+ * FROM Orders
+ * GROUP BY HOP(rowtime, INTERVAL '1' HOUR), productId
+ * </pre></blockquote>
+ */
+class SqlGroupFunction extends SqlFunction {
+ /** The grouped function, if this an auxiliary function; null otherwise. */
+ final SqlGroupFunction groupFunction;
+
+ /** Creates a SqlGroupFunction.
+ *
+ * @param kind Kind; also determines function name
+ * @param groupFunction Group function, if this is an auxiliary;
+ * null, if this is a group function
+ * @param operandTypeChecker Operand type checker
+ */
+ SqlGroupFunction(SqlKind kind, SqlGroupFunction groupFunction,
+ SqlOperandTypeChecker operandTypeChecker) {
+ super(kind.name(), kind, ReturnTypes.ARG0, null,
+ operandTypeChecker, SqlFunctionCategory.SYSTEM);
+ this.groupFunction = groupFunction;
+ if (groupFunction != null) {
+ assert groupFunction.groupFunction == null;
+ }
+ }
+
+ /** Creates an auxiliary function from this grouped window function. */
+ SqlGroupFunction auxiliary(SqlKind kind) {
+ return new SqlGroupFunction(kind, this, getOperandTypeChecker());
+ }
+
+ /** Returns a list of this grouped window function's auxiliary functions. */
+ List<SqlGroupFunction> getAuxiliaryFunctions() {
+ return ImmutableList.of();
+ }
+
+ @Override public boolean isGroup() {
+ // Auxiliary functions are not group functions
+ return groupFunction == null;
+ }
+
+ @Override public boolean isGroupAuxiliary() {
+ return groupFunction != null;
+ }
+
+ @Override public SqlMonotonicity getMonotonicity(SqlOperatorBinding call) {
+ // Monotonic iff its first argument is, but not strict.
+ //
+ // Note: This strategy happens to works for all current group functions
+ // (HOP, TUMBLE, SESSION). When there are exceptions to this rule, we'll
+ // make the method abstract.
+ return call.getOperandMonotonicity(0).unstrict();
+ }
+}
+
+// End SqlGroupFunction.java
http://git-wip-us.apache.org/repos/asf/flink/blob/2d33c0be/flink-libraries/flink-table/src/main/java/org/apache/calcite/sql/fun/SqlStdOperatorTable.java
----------------------------------------------------------------------
diff --git a/flink-libraries/flink-table/src/main/java/org/apache/calcite/sql/fun/SqlStdOperatorTable.java b/flink-libraries/flink-table/src/main/java/org/apache/calcite/sql/fun/SqlStdOperatorTable.java
new file mode 100644
index 0000000..6faf8e8
--- /dev/null
+++ b/flink-libraries/flink-table/src/main/java/org/apache/calcite/sql/fun/SqlStdOperatorTable.java
@@ -0,0 +1,2133 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to you under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.calcite.sql.fun;
+
+/*
+ * THIS FILE HAS BEEN COPIED FROM THE APACHE CALCITE PROJECT UNTIL CALCITE-1761 IS FIXED.
+ */
+
+import org.apache.calcite.avatica.util.TimeUnit;
+import org.apache.calcite.rel.type.RelDataType;
+import org.apache.calcite.rel.type.RelDataTypeFactory;
+import org.apache.calcite.sql.SqlAggFunction;
+import org.apache.calcite.sql.SqlAsOperator;
+import org.apache.calcite.sql.SqlBasicCall;
+import org.apache.calcite.sql.SqlBinaryOperator;
+import org.apache.calcite.sql.SqlCall;
+import org.apache.calcite.sql.SqlFilterOperator;
+import org.apache.calcite.sql.SqlFunction;
+import org.apache.calcite.sql.SqlFunctionCategory;
+import org.apache.calcite.sql.SqlInternalOperator;
+import org.apache.calcite.sql.SqlKind;
+import org.apache.calcite.sql.SqlLateralOperator;
+import org.apache.calcite.sql.SqlLiteral;
+import org.apache.calcite.sql.SqlNode;
+import org.apache.calcite.sql.SqlNumericLiteral;
+import org.apache.calcite.sql.SqlOperandCountRange;
+import org.apache.calcite.sql.SqlOperator;
+import org.apache.calcite.sql.SqlOperatorBinding;
+import org.apache.calcite.sql.SqlOverOperator;
+import org.apache.calcite.sql.SqlPostfixOperator;
+import org.apache.calcite.sql.SqlPrefixOperator;
+import org.apache.calcite.sql.SqlProcedureCallOperator;
+import org.apache.calcite.sql.SqlRankFunction;
+import org.apache.calcite.sql.SqlSampleSpec;
+import org.apache.calcite.sql.SqlSetOperator;
+import org.apache.calcite.sql.SqlSpecialOperator;
+import org.apache.calcite.sql.SqlUnnestOperator;
+import org.apache.calcite.sql.SqlUtil;
+import org.apache.calcite.sql.SqlValuesOperator;
+import org.apache.calcite.sql.SqlWindow;
+import org.apache.calcite.sql.SqlWriter;
+import org.apache.calcite.sql.type.InferTypes;
+import org.apache.calcite.sql.type.IntervalSqlType;
+import org.apache.calcite.sql.type.OperandTypes;
+import org.apache.calcite.sql.type.ReturnTypes;
+import org.apache.calcite.sql.type.SqlOperandCountRanges;
+import org.apache.calcite.sql.type.SqlTypeName;
+import org.apache.calcite.sql.util.ReflectiveSqlOperatorTable;
+import org.apache.calcite.sql.validate.SqlModality;
+import org.apache.calcite.sql2rel.AuxiliaryConverter;
+import org.apache.calcite.util.Litmus;
+import org.apache.calcite.util.Pair;
+
+import com.google.common.collect.ImmutableList;
+
+import java.util.List;
+
+/**
+ * Implementation of {@link org.apache.calcite.sql.SqlOperatorTable} containing
+ * the standard operators and functions.
+ */
+public class SqlStdOperatorTable extends ReflectiveSqlOperatorTable {
+ //~ Static fields/initializers ---------------------------------------------
+
+ /**
+ * The standard operator table.
+ */
+ private static SqlStdOperatorTable instance;
+
+ //-------------------------------------------------------------
+ // SET OPERATORS
+ //-------------------------------------------------------------
+ // The set operators can be compared to the arithmetic operators
+ // UNION -> +
+ // EXCEPT -> -
+ // INTERSECT -> *
+ // which explains the different precedence values
+ public static final SqlSetOperator UNION =
+ new SqlSetOperator("UNION", SqlKind.UNION, 14, false);
+
+ public static final SqlSetOperator UNION_ALL =
+ new SqlSetOperator("UNION ALL", SqlKind.UNION, 14, true);
+
+ public static final SqlSetOperator EXCEPT =
+ new SqlSetOperator("EXCEPT", SqlKind.EXCEPT, 14, false);
+
+ public static final SqlSetOperator EXCEPT_ALL =
+ new SqlSetOperator("EXCEPT ALL", SqlKind.EXCEPT, 14, true);
+
+ public static final SqlSetOperator INTERSECT =
+ new SqlSetOperator("INTERSECT", SqlKind.INTERSECT, 18, false);
+
+ public static final SqlSetOperator INTERSECT_ALL =
+ new SqlSetOperator("INTERSECT ALL", SqlKind.INTERSECT, 18, true);
+
+ /**
+ * The "MULTISET UNION" operator.
+ */
+ public static final SqlMultisetSetOperator MULTISET_UNION =
+ new SqlMultisetSetOperator("MULTISET UNION", 14, false);
+
+ /**
+ * The "MULTISET UNION ALL" operator.
+ */
+ public static final SqlMultisetSetOperator MULTISET_UNION_ALL =
+ new SqlMultisetSetOperator("MULTISET UNION ALL", 14, true);
+
+ /**
+ * The "MULTISET EXCEPT" operator.
+ */
+ public static final SqlMultisetSetOperator MULTISET_EXCEPT =
+ new SqlMultisetSetOperator("MULTISET EXCEPT", 14, false);
+
+ /**
+ * The "MULTISET EXCEPT ALL" operator.
+ */
+ public static final SqlMultisetSetOperator MULTISET_EXCEPT_ALL =
+ new SqlMultisetSetOperator("MULTISET EXCEPT ALL", 14, true);
+
+ /**
+ * The "MULTISET INTERSECT" operator.
+ */
+ public static final SqlMultisetSetOperator MULTISET_INTERSECT =
+ new SqlMultisetSetOperator("MULTISET INTERSECT", 18, false);
+
+ /**
+ * The "MULTISET INTERSECT ALL" operator.
+ */
+ public static final SqlMultisetSetOperator MULTISET_INTERSECT_ALL =
+ new SqlMultisetSetOperator("MULTISET INTERSECT ALL", 18, true);
+
+ //-------------------------------------------------------------
+ // BINARY OPERATORS
+ //-------------------------------------------------------------
+
+ /**
+ * Logical <code>AND</code> operator.
+ */
+ public static final SqlBinaryOperator AND =
+ new SqlBinaryOperator(
+ "AND",
+ SqlKind.AND,
+ 24,
+ true,
+ ReturnTypes.BOOLEAN_NULLABLE_OPTIMIZED,
+ InferTypes.BOOLEAN,
+ OperandTypes.BOOLEAN_BOOLEAN);
+
+ /**
+ * <code>AS</code> operator associates an expression in the SELECT clause
+ * with an alias.
+ */
+ public static final SqlAsOperator AS = new SqlAsOperator();
+
+ /**
+ * <code>ARGUMENT_ASSIGNMENT</code> operator (<code>=<</code>)
+ * assigns an argument to a function call to a particular named parameter.
+ */
+ public static final SqlSpecialOperator ARGUMENT_ASSIGNMENT =
+ new SqlArgumentAssignmentOperator();
+
+ /**
+ * <code>DEFAULT</code> operator indicates that an argument to a function call
+ * is to take its default value..
+ */
+ public static final SqlSpecialOperator DEFAULT = new SqlDefaultOperator();
+
+ /** <code>FILTER</code> operator filters which rows are included in an
+ * aggregate function. */
+ public static final SqlFilterOperator FILTER = new SqlFilterOperator();
+
+ /** {@code CUBE} operator, occurs within {@code GROUP BY} clause
+ * or nested within a {@code GROUPING SETS}. */
+ public static final SqlInternalOperator CUBE =
+ new SqlRollupOperator("CUBE", SqlKind.CUBE);
+
+ /** {@code ROLLUP} operator, occurs within {@code GROUP BY} clause
+ * or nested within a {@code GROUPING SETS}. */
+ public static final SqlInternalOperator ROLLUP =
+ new SqlRollupOperator("ROLLUP", SqlKind.ROLLUP);
+
+ /** {@code GROUPING SETS} operator, occurs within {@code GROUP BY} clause
+ * or nested within a {@code GROUPING SETS}. */
+ public static final SqlInternalOperator GROUPING_SETS =
+ new SqlRollupOperator("GROUPING SETS", SqlKind.GROUPING_SETS);
+
+ /** {@code GROUPING} function. Occurs in similar places to an aggregate
+ * function ({@code SELECT}, {@code HAVING} clause, etc. of an aggregate
+ * query), but not technically an aggregate function. */
+ public static final SqlGroupingFunction GROUPING =
+ new SqlGroupingFunction("GROUPING");
+
+ /** {@code GROUP_ID} function. */
+ public static final SqlGroupIdFunction GROUP_ID =
+ new SqlGroupIdFunction();
+
+ /** {@code GROUP_ID} function is a synonym for {@code GROUPING}.
+ *
+ * <p>Some history. The {@code GROUPING} function is in the SQL standard,
+ * and originally supported only one argument. The {@code GROUP_ID} is not
+ * standard (though supported in Oracle and SQL Server) and supports zero or
+ * more arguments.
+ *
+ * <p>The SQL standard has changed to allow {@code GROUPING} to have multiple
+ * arguments. It is now equivalent to {@code GROUP_ID}, so we made
+ * {@code GROUP_ID} a synonym for {@code GROUPING}. */
+ public static final SqlGroupingFunction GROUPING_ID =
+ new SqlGroupingFunction("GROUPING_ID");
+
+ /** {@code EXTEND} operator. */
+ public static final SqlInternalOperator EXTEND = new SqlExtendOperator();
+
+ /**
+ * String concatenation operator, '<code>||</code>'.
+ */
+ public static final SqlBinaryOperator CONCAT =
+ new SqlBinaryOperator(
+ "||",
+ SqlKind.OTHER,
+ 60,
+ true,
+ ReturnTypes.DYADIC_STRING_SUM_PRECISION_NULLABLE,
+ null,
+ OperandTypes.STRING_SAME_SAME);
+
+ /**
+ * Arithmetic division operator, '<code>/</code>'.
+ */
+ public static final SqlBinaryOperator DIVIDE =
+ new SqlBinaryOperator(
+ "/",
+ SqlKind.DIVIDE,
+ 60,
+ true,
+ ReturnTypes.QUOTIENT_NULLABLE,
+ InferTypes.FIRST_KNOWN,
+ OperandTypes.DIVISION_OPERATOR);
+
+ /** The {@code RAND_INTEGER([seed, ] bound)} function, which yields a random
+ * integer, optionally with seed. */
+ public static final SqlRandIntegerFunction RAND_INTEGER =
+ new SqlRandIntegerFunction();
+
+ /** The {@code RAND([seed])} function, which yields a random double,
+ * optionally with seed. */
+ public static final SqlRandFunction RAND = new SqlRandFunction();
+
+ /**
+ * Internal integer arithmetic division operator, '<code>/INT</code>'. This
+ * is only used to adjust scale for numerics. We distinguish it from
+ * user-requested division since some personalities want a floating-point
+ * computation, whereas for the internal scaling use of division, we always
+ * want integer division.
+ */
+ public static final SqlBinaryOperator DIVIDE_INTEGER =
+ new SqlBinaryOperator(
+ "/INT",
+ SqlKind.DIVIDE,
+ 60,
+ true,
+ ReturnTypes.INTEGER_QUOTIENT_NULLABLE,
+ InferTypes.FIRST_KNOWN,
+ OperandTypes.DIVISION_OPERATOR);
+
+ /**
+ * Dot operator, '<code>.</code>', used for referencing fields of records.
+ */
+ public static final SqlBinaryOperator DOT =
+ new SqlBinaryOperator(
+ ".",
+ SqlKind.DOT,
+ 80,
+ true,
+ null,
+ null,
+ OperandTypes.ANY_ANY);
+
+ /**
+ * Logical equals operator, '<code>=</code>'.
+ */
+ public static final SqlBinaryOperator EQUALS =
+ new SqlBinaryOperator(
+ "=",
+ SqlKind.EQUALS,
+ 30,
+ true,
+ ReturnTypes.BOOLEAN_NULLABLE,
+ InferTypes.FIRST_KNOWN,
+ OperandTypes.COMPARABLE_UNORDERED_COMPARABLE_UNORDERED);
+
+ /**
+ * Logical greater-than operator, '<code>></code>'.
+ */
+ public static final SqlBinaryOperator GREATER_THAN =
+ new SqlBinaryOperator(
+ ">",
+ SqlKind.GREATER_THAN,
+ 30,
+ true,
+ ReturnTypes.BOOLEAN_NULLABLE,
+ InferTypes.FIRST_KNOWN,
+ OperandTypes.COMPARABLE_ORDERED_COMPARABLE_ORDERED);
+
+ /**
+ * <code>IS DISTINCT FROM</code> operator.
+ */
+ public static final SqlBinaryOperator IS_DISTINCT_FROM =
+ new SqlBinaryOperator(
+ "IS DISTINCT FROM",
+ SqlKind.IS_DISTINCT_FROM,
+ 30,
+ true,
+ ReturnTypes.BOOLEAN,
+ InferTypes.FIRST_KNOWN,
+ OperandTypes.COMPARABLE_UNORDERED_COMPARABLE_UNORDERED);
+
+ /**
+ * <code>IS NOT DISTINCT FROM</code> operator. Is equivalent to <code>NOT(x
+ * IS DISTINCT FROM y)</code>
+ */
+ public static final SqlBinaryOperator IS_NOT_DISTINCT_FROM =
+ new SqlBinaryOperator(
+ "IS NOT DISTINCT FROM",
+ SqlKind.IS_NOT_DISTINCT_FROM,
+ 30,
+ true,
+ ReturnTypes.BOOLEAN,
+ InferTypes.FIRST_KNOWN,
+ OperandTypes.COMPARABLE_UNORDERED_COMPARABLE_UNORDERED);
+
+ /**
+ * The internal <code>$IS_DIFFERENT_FROM</code> operator is the same as the
+ * user-level {@link #IS_DISTINCT_FROM} in all respects except that
+ * the test for equality on character datatypes treats trailing spaces as
+ * significant.
+ */
+ public static final SqlBinaryOperator IS_DIFFERENT_FROM =
+ new SqlBinaryOperator(
+ "$IS_DIFFERENT_FROM",
+ SqlKind.OTHER,
+ 30,
+ true,
+ ReturnTypes.BOOLEAN,
+ InferTypes.FIRST_KNOWN,
+ OperandTypes.COMPARABLE_UNORDERED_COMPARABLE_UNORDERED);
+
+ /**
+ * Logical greater-than-or-equal operator, '<code>>=</code>'.
+ */
+ public static final SqlBinaryOperator GREATER_THAN_OR_EQUAL =
+ new SqlBinaryOperator(
+ ">=",
+ SqlKind.GREATER_THAN_OR_EQUAL,
+ 30,
+ true,
+ ReturnTypes.BOOLEAN_NULLABLE,
+ InferTypes.FIRST_KNOWN,
+ OperandTypes.COMPARABLE_ORDERED_COMPARABLE_ORDERED);
+
+ /**
+ * <code>IN</code> operator tests for a value's membership in a sub-query or
+ * a list of values.
+ */
+ public static final SqlBinaryOperator IN = new SqlInOperator(false);
+
+ /**
+ * <code>NOT IN</code> operator tests for a value's membership in a sub-query
+ * or a list of values.
+ */
+ public static final SqlBinaryOperator NOT_IN =
+ new SqlInOperator(true);
+
+ /**
+ * Logical less-than operator, '<code><</code>'.
+ */
+ public static final SqlBinaryOperator LESS_THAN =
+ new SqlBinaryOperator(
+ "<",
+ SqlKind.LESS_THAN,
+ 30,
+ true,
+ ReturnTypes.BOOLEAN_NULLABLE,
+ InferTypes.FIRST_KNOWN,
+ OperandTypes.COMPARABLE_ORDERED_COMPARABLE_ORDERED);
+
+ /**
+ * Logical less-than-or-equal operator, '<code><=</code>'.
+ */
+ public static final SqlBinaryOperator LESS_THAN_OR_EQUAL =
+ new SqlBinaryOperator(
+ "<=",
+ SqlKind.LESS_THAN_OR_EQUAL,
+ 30,
+ true,
+ ReturnTypes.BOOLEAN_NULLABLE,
+ InferTypes.FIRST_KNOWN,
+ OperandTypes.COMPARABLE_ORDERED_COMPARABLE_ORDERED);
+
+ /**
+ * Infix arithmetic minus operator, '<code>-</code>'.
+ *
+ * <p>Its precedence is less than the prefix {@link #UNARY_PLUS +}
+ * and {@link #UNARY_MINUS -} operators.
+ */
+ public static final SqlBinaryOperator MINUS =
+ new SqlMonotonicBinaryOperator(
+ "-",
+ SqlKind.MINUS,
+ 40,
+ true,
+
+ // Same type inference strategy as sum
+ ReturnTypes.NULLABLE_SUM,
+ InferTypes.FIRST_KNOWN,
+ OperandTypes.MINUS_OPERATOR);
+
+ /**
+ * Arithmetic multiplication operator, '<code>*</code>'.
+ */
+ public static final SqlBinaryOperator MULTIPLY =
+ new SqlMonotonicBinaryOperator(
+ "*",
+ SqlKind.TIMES,
+ 60,
+ true,
+ ReturnTypes.PRODUCT_NULLABLE,
+ InferTypes.FIRST_KNOWN,
+ OperandTypes.MULTIPLY_OPERATOR);
+
+ /**
+ * Logical not-equals operator, '<code><></code>'.
+ */
+ public static final SqlBinaryOperator NOT_EQUALS =
+ new SqlBinaryOperator(
+ "<>",
+ SqlKind.NOT_EQUALS,
+ 30,
+ true,
+ ReturnTypes.BOOLEAN_NULLABLE,
+ InferTypes.FIRST_KNOWN,
+ OperandTypes.COMPARABLE_UNORDERED_COMPARABLE_UNORDERED);
+
+ /**
+ * Logical <code>OR</code> operator.
+ */
+ public static final SqlBinaryOperator OR =
+ new SqlBinaryOperator(
+ "OR",
+ SqlKind.OR,
+ 22,
+ true,
+ ReturnTypes.BOOLEAN_NULLABLE_OPTIMIZED,
+ InferTypes.BOOLEAN,
+ OperandTypes.BOOLEAN_BOOLEAN);
+
+ /**
+ * Infix arithmetic plus operator, '<code>+</code>'.
+ */
+ public static final SqlBinaryOperator PLUS =
+ new SqlMonotonicBinaryOperator(
+ "+",
+ SqlKind.PLUS,
+ 40,
+ true,
+ ReturnTypes.NULLABLE_SUM,
+ InferTypes.FIRST_KNOWN,
+ OperandTypes.PLUS_OPERATOR);
+
+ /**
+ * Infix datetime plus operator, '<code>DATETIME + INTERVAL</code>'.
+ */
+ public static final SqlSpecialOperator DATETIME_PLUS =
+ new SqlSpecialOperator("DATETIME_PLUS", SqlKind.PLUS, 40, true, null,
+ InferTypes.FIRST_KNOWN, OperandTypes.PLUS_OPERATOR) {
+ @Override public RelDataType
+ inferReturnType(SqlOperatorBinding opBinding) {
+ final RelDataTypeFactory typeFactory = opBinding.getTypeFactory();
+ final RelDataType leftType = opBinding.getOperandType(0);
+ final IntervalSqlType unitType =
+ (IntervalSqlType) opBinding.getOperandType(1);
+ switch (unitType.getIntervalQualifier().getStartUnit()) {
+ case HOUR:
+ case MINUTE:
+ case SECOND:
+ case MILLISECOND:
+ case MICROSECOND:
+ return typeFactory.createTypeWithNullability(
+ typeFactory.createSqlType(SqlTypeName.TIMESTAMP),
+ leftType.isNullable() || unitType.isNullable());
+ default:
+ return leftType;
+ }
+ }
+ };
+
+ /**
+ * Multiset {@code MEMBER OF}, which returns whether a element belongs to a
+ * multiset.
+ *
+ * <p>For example, the following returns <code>false</code>:
+ *
+ * <blockquote>
+ * <code>'green' MEMBER OF MULTISET ['red','almost green','blue']</code>
+ * </blockquote>
+ */
+ public static final SqlBinaryOperator MEMBER_OF =
+ new SqlMultisetMemberOfOperator();
+
+ /**
+ * Submultiset. Checks to see if an multiset is a sub-set of another
+ * multiset.
+ *
+ * <p>For example, the following returns <code>false</code>:
+ *
+ * <blockquote>
+ * <code>MULTISET ['green'] SUBMULTISET OF
+ * MULTISET['red', 'almost green', 'blue']</code>
+ * </blockquote>
+ *
+ * <p>The following returns <code>true</code>, in part because multisets are
+ * order-independent:
+ *
+ * <blockquote>
+ * <code>MULTISET ['blue', 'red'] SUBMULTISET OF
+ * MULTISET ['red', 'almost green', 'blue']</code>
+ * </blockquote>
+ */
+ public static final SqlBinaryOperator SUBMULTISET_OF =
+
+ // TODO: check if precedence is correct
+ new SqlBinaryOperator(
+ "SUBMULTISET OF",
+ SqlKind.OTHER,
+ 30,
+ true,
+ ReturnTypes.BOOLEAN_NULLABLE,
+ null,
+ OperandTypes.MULTISET_MULTISET);
+
+ //-------------------------------------------------------------
+ // POSTFIX OPERATORS
+ //-------------------------------------------------------------
+ public static final SqlPostfixOperator DESC =
+ new SqlPostfixOperator(
+ "DESC",
+ SqlKind.DESCENDING,
+ 20,
+ ReturnTypes.ARG0,
+ InferTypes.RETURN_TYPE,
+ OperandTypes.ANY);
+
+ public static final SqlPostfixOperator NULLS_FIRST =
+ new SqlPostfixOperator(
+ "NULLS FIRST",
+ SqlKind.NULLS_FIRST,
+ 18,
+ ReturnTypes.ARG0,
+ InferTypes.RETURN_TYPE,
+ OperandTypes.ANY);
+
+ public static final SqlPostfixOperator NULLS_LAST =
+ new SqlPostfixOperator(
+ "NULLS LAST",
+ SqlKind.NULLS_LAST,
+ 18,
+ ReturnTypes.ARG0,
+ InferTypes.RETURN_TYPE,
+ OperandTypes.ANY);
+
+ public static final SqlPostfixOperator IS_NOT_NULL =
+ new SqlPostfixOperator(
+ "IS NOT NULL",
+ SqlKind.IS_NOT_NULL,
+ 28,
+ ReturnTypes.BOOLEAN_NOT_NULL,
+ InferTypes.VARCHAR_1024,
+ OperandTypes.ANY);
+
+ public static final SqlPostfixOperator IS_NULL =
+ new SqlPostfixOperator(
+ "IS NULL",
+ SqlKind.IS_NULL,
+ 28,
+ ReturnTypes.BOOLEAN_NOT_NULL,
+ InferTypes.VARCHAR_1024,
+ OperandTypes.ANY);
+
+ public static final SqlPostfixOperator IS_NOT_TRUE =
+ new SqlPostfixOperator(
+ "IS NOT TRUE",
+ SqlKind.IS_NOT_TRUE,
+ 28,
+ ReturnTypes.BOOLEAN_NOT_NULL,
+ InferTypes.BOOLEAN,
+ OperandTypes.BOOLEAN);
+
+ public static final SqlPostfixOperator IS_TRUE =
+ new SqlPostfixOperator(
+ "IS TRUE",
+ SqlKind.IS_TRUE,
+ 28,
+ ReturnTypes.BOOLEAN_NOT_NULL,
+ InferTypes.BOOLEAN,
+ OperandTypes.BOOLEAN);
+
+ public static final SqlPostfixOperator IS_NOT_FALSE =
+ new SqlPostfixOperator(
+ "IS NOT FALSE",
+ SqlKind.IS_NOT_FALSE,
+ 28,
+ ReturnTypes.BOOLEAN_NOT_NULL,
+ InferTypes.BOOLEAN,
+ OperandTypes.BOOLEAN);
+
+ public static final SqlPostfixOperator IS_FALSE =
+ new SqlPostfixOperator(
+ "IS FALSE",
+ SqlKind.IS_FALSE,
+ 28,
+ ReturnTypes.BOOLEAN_NOT_NULL,
+ InferTypes.BOOLEAN,
+ OperandTypes.BOOLEAN);
+
+ public static final SqlPostfixOperator IS_NOT_UNKNOWN =
+ new SqlPostfixOperator(
+ "IS NOT UNKNOWN",
+ SqlKind.IS_NOT_NULL,
+ 28,
+ ReturnTypes.BOOLEAN_NOT_NULL,
+ InferTypes.BOOLEAN,
+ OperandTypes.BOOLEAN);
+
+ public static final SqlPostfixOperator IS_UNKNOWN =
+ new SqlPostfixOperator(
+ "IS UNKNOWN",
+ SqlKind.IS_NULL,
+ 28,
+ ReturnTypes.BOOLEAN_NOT_NULL,
+ InferTypes.BOOLEAN,
+ OperandTypes.BOOLEAN);
+
+ public static final SqlPostfixOperator IS_A_SET =
+ new SqlPostfixOperator(
+ "IS A SET",
+ SqlKind.OTHER,
+ 28,
+ ReturnTypes.BOOLEAN,
+ null,
+ OperandTypes.MULTISET);
+
+ //-------------------------------------------------------------
+ // PREFIX OPERATORS
+ //-------------------------------------------------------------
+ public static final SqlPrefixOperator EXISTS =
+ new SqlPrefixOperator(
+ "EXISTS",
+ SqlKind.EXISTS,
+ 40,
+ ReturnTypes.BOOLEAN,
+ null,
+ OperandTypes.ANY) {
+ public boolean argumentMustBeScalar(int ordinal) {
+ return false;
+ }
+
+ @Override public boolean validRexOperands(int count, Litmus litmus) {
+ if (count != 0) {
+ return litmus.fail("wrong operand count {} for {}", count, this);
+ }
+ return litmus.succeed();
+ }
+ };
+
+ public static final SqlPrefixOperator NOT =
+ new SqlPrefixOperator(
+ "NOT",
+ SqlKind.NOT,
+ 26,
+ ReturnTypes.ARG0,
+ InferTypes.BOOLEAN,
+ OperandTypes.BOOLEAN);
+
+ /**
+ * Prefix arithmetic minus operator, '<code>-</code>'.
+ *
+ * <p>Its precedence is greater than the infix '{@link #PLUS +}' and
+ * '{@link #MINUS -}' operators.
+ */
+ public static final SqlPrefixOperator UNARY_MINUS =
+ new SqlPrefixOperator(
+ "-",
+ SqlKind.MINUS_PREFIX,
+ 80,
+ ReturnTypes.ARG0,
+ InferTypes.RETURN_TYPE,
+ OperandTypes.NUMERIC_OR_INTERVAL);
+
+ /**
+ * Prefix arithmetic plus operator, '<code>+</code>'.
+ *
+ * <p>Its precedence is greater than the infix '{@link #PLUS +}' and
+ * '{@link #MINUS -}' operators.
+ */
+ public static final SqlPrefixOperator UNARY_PLUS =
+ new SqlPrefixOperator(
+ "+",
+ SqlKind.PLUS_PREFIX,
+ 80,
+ ReturnTypes.ARG0,
+ InferTypes.RETURN_TYPE,
+ OperandTypes.NUMERIC_OR_INTERVAL);
+
+ /**
+ * Keyword which allows an identifier to be explicitly flagged as a table.
+ * For example, <code>select * from (TABLE t)</code> or <code>TABLE
+ * t</code>. See also {@link #COLLECTION_TABLE}.
+ */
+ public static final SqlPrefixOperator EXPLICIT_TABLE =
+ new SqlPrefixOperator(
+ "TABLE",
+ SqlKind.EXPLICIT_TABLE,
+ 2,
+ null,
+ null,
+ null);
+
+ //-------------------------------------------------------------
+ // AGGREGATE OPERATORS
+ //-------------------------------------------------------------
+ /**
+ * <code>SUM</code> aggregate function.
+ */
+ public static final SqlAggFunction SUM = new SqlSumAggFunction(null);
+
+ /**
+ * <code>COUNT</code> aggregate function.
+ */
+ public static final SqlAggFunction COUNT = new SqlCountAggFunction();
+
+ /**
+ * <code>MIN</code> aggregate function.
+ */
+ public static final SqlAggFunction MIN =
+ new SqlMinMaxAggFunction(SqlKind.MIN);
+
+ /**
+ * <code>MAX</code> aggregate function.
+ */
+ public static final SqlAggFunction MAX =
+ new SqlMinMaxAggFunction(SqlKind.MAX);
+
+ /**
+ * <code>LAST_VALUE</code> aggregate function.
+ */
+ public static final SqlAggFunction LAST_VALUE =
+ new SqlFirstLastValueAggFunction(SqlKind.LAST_VALUE);
+
+ /**
+ * <code>FIRST_VALUE</code> aggregate function.
+ */
+ public static final SqlAggFunction FIRST_VALUE =
+ new SqlFirstLastValueAggFunction(SqlKind.FIRST_VALUE);
+
+ /**
+ * <code>LEAD</code> aggregate function.
+ */
+ public static final SqlAggFunction LEAD =
+ new SqlLeadLagAggFunction(SqlKind.LEAD);
+
+ /**
+ * <code>LAG</code> aggregate function.
+ */
+ public static final SqlAggFunction LAG =
+ new SqlLeadLagAggFunction(SqlKind.LAG);
+
+ /**
+ * <code>NTILE</code> aggregate function.
+ */
+ public static final SqlAggFunction NTILE =
+ new SqlNtileAggFunction();
+
+ /**
+ * <code>SINGLE_VALUE</code> aggregate function.
+ */
+ public static final SqlAggFunction SINGLE_VALUE =
+ new SqlSingleValueAggFunction(null);
+
+ /**
+ * <code>AVG</code> aggregate function.
+ */
+ public static final SqlAggFunction AVG =
+ new SqlAvgAggFunction(SqlKind.AVG);
+
+ /**
+ * <code>STDDEV_POP</code> aggregate function.
+ */
+ public static final SqlAggFunction STDDEV_POP =
+ new SqlAvgAggFunction(SqlKind.STDDEV_POP);
+
+ /**
+ * <code>REGR_SXX</code> aggregate function.
+ */
+ public static final SqlAggFunction REGR_SXX =
+ new SqlCovarAggFunction(SqlKind.REGR_SXX);
+
+ /**
+ * <code>REGR_SYY</code> aggregate function.
+ */
+ public static final SqlAggFunction REGR_SYY =
+ new SqlCovarAggFunction(SqlKind.REGR_SYY);
+
+ /**
+ * <code>COVAR_POP</code> aggregate function.
+ */
+ public static final SqlAggFunction COVAR_POP =
+ new SqlCovarAggFunction(SqlKind.COVAR_POP);
+
+ /**
+ * <code>COVAR_SAMP</code> aggregate function.
+ */
+ public static final SqlAggFunction COVAR_SAMP =
+ new SqlCovarAggFunction(SqlKind.COVAR_SAMP);
+
+ /**
+ * <code>STDDEV_SAMP</code> aggregate function.
+ */
+ public static final SqlAggFunction STDDEV_SAMP =
+ new SqlAvgAggFunction(SqlKind.STDDEV_SAMP);
+
+ /**
+ * <code>VAR_POP</code> aggregate function.
+ */
+ public static final SqlAggFunction VAR_POP =
+ new SqlAvgAggFunction(SqlKind.VAR_POP);
+
+ /**
+ * <code>VAR_SAMP</code> aggregate function.
+ */
+ public static final SqlAggFunction VAR_SAMP =
+ new SqlAvgAggFunction(SqlKind.VAR_SAMP);
+
+ //-------------------------------------------------------------
+ // WINDOW Aggregate Functions
+ //-------------------------------------------------------------
+ /**
+ * <code>HISTOGRAM</code> aggregate function support. Used by window
+ * aggregate versions of MIN/MAX
+ */
+ public static final SqlAggFunction HISTOGRAM_AGG =
+ new SqlHistogramAggFunction(null);
+
+ /**
+ * <code>HISTOGRAM_MIN</code> window aggregate function.
+ */
+ public static final SqlFunction HISTOGRAM_MIN =
+ new SqlFunction(
+ "$HISTOGRAM_MIN",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.ARG0_NULLABLE,
+ null,
+ OperandTypes.NUMERIC_OR_STRING,
+ SqlFunctionCategory.NUMERIC);
+
+ /**
+ * <code>HISTOGRAM_MAX</code> window aggregate function.
+ */
+ public static final SqlFunction HISTOGRAM_MAX =
+ new SqlFunction(
+ "$HISTOGRAM_MAX",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.ARG0_NULLABLE,
+ null,
+ OperandTypes.NUMERIC_OR_STRING,
+ SqlFunctionCategory.NUMERIC);
+
+ /**
+ * <code>HISTOGRAM_FIRST_VALUE</code> window aggregate function.
+ */
+ public static final SqlFunction HISTOGRAM_FIRST_VALUE =
+ new SqlFunction(
+ "$HISTOGRAM_FIRST_VALUE",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.ARG0_NULLABLE,
+ null,
+ OperandTypes.NUMERIC_OR_STRING,
+ SqlFunctionCategory.NUMERIC);
+
+ /**
+ * <code>HISTOGRAM_LAST_VALUE</code> window aggregate function.
+ */
+ public static final SqlFunction HISTOGRAM_LAST_VALUE =
+ new SqlFunction(
+ "$HISTOGRAM_LAST_VALUE",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.ARG0_NULLABLE,
+ null,
+ OperandTypes.NUMERIC_OR_STRING,
+ SqlFunctionCategory.NUMERIC);
+
+ /**
+ * <code>SUM0</code> aggregate function.
+ */
+ public static final SqlAggFunction SUM0 =
+ new SqlSumEmptyIsZeroAggFunction();
+
+ //-------------------------------------------------------------
+ // WINDOW Rank Functions
+ //-------------------------------------------------------------
+ /**
+ * <code>CUME_DIST</code> window function.
+ */
+ public static final SqlRankFunction CUME_DIST =
+ new SqlRankFunction(true, SqlKind.CUME_DIST);
+
+ /**
+ * <code>DENSE_RANK</code> window function.
+ */
+ public static final SqlRankFunction DENSE_RANK =
+ new SqlRankFunction(true, SqlKind.DENSE_RANK);
+
+ /**
+ * <code>PERCENT_RANK</code> window function.
+ */
+ public static final SqlRankFunction PERCENT_RANK =
+ new SqlRankFunction(true, SqlKind.PERCENT_RANK);
+
+ /**
+ * <code>RANK</code> window function.
+ */
+ public static final SqlRankFunction RANK =
+ new SqlRankFunction(true, SqlKind.RANK);
+
+ /**
+ * <code>ROW_NUMBER</code> window function.
+ */
+ public static final SqlRankFunction ROW_NUMBER =
+ new SqlRankFunction(false, SqlKind.ROW_NUMBER);
+
+ //-------------------------------------------------------------
+ // SPECIAL OPERATORS
+ //-------------------------------------------------------------
+ public static final SqlRowOperator ROW = new SqlRowOperator("ROW");
+
+ /**
+ * A special operator for the subtraction of two DATETIMEs. The format of
+ * DATETIME subtraction is:
+ *
+ * <blockquote><code>"(" <datetime> "-" <datetime> ")"
+ * <interval qualifier></code></blockquote>
+ *
+ * <p>This operator is special since it needs to hold the
+ * additional interval qualifier specification.</p>
+ */
+ public static final SqlDatetimeSubtractionOperator MINUS_DATE =
+ new SqlDatetimeSubtractionOperator();
+
+ /**
+ * The MULTISET Value Constructor. e.g. "<code>MULTISET[1,2,3]</code>".
+ */
+ public static final SqlMultisetValueConstructor MULTISET_VALUE =
+ new SqlMultisetValueConstructor();
+
+ /**
+ * The MULTISET Query Constructor. e.g. "<code>SELECT dname, MULTISET(SELECT
+ * FROM emp WHERE deptno = dept.deptno) FROM dept</code>".
+ */
+ public static final SqlMultisetQueryConstructor MULTISET_QUERY =
+ new SqlMultisetQueryConstructor();
+
+ /**
+ * The ARRAY Query Constructor. e.g. "<code>SELECT dname, ARRAY(SELECT
+ * FROM emp WHERE deptno = dept.deptno) FROM dept</code>".
+ */
+ public static final SqlMultisetQueryConstructor ARRAY_QUERY =
+ new SqlArrayQueryConstructor();
+
+ /**
+ * The MAP Query Constructor. e.g. "<code>MAP(SELECT empno, deptno
+ * FROM emp)</code>".
+ */
+ public static final SqlMultisetQueryConstructor MAP_QUERY =
+ new SqlMapQueryConstructor();
+
+ /**
+ * The CURSOR constructor. e.g. "<code>SELECT * FROM
+ * TABLE(DEDUP(CURSOR(SELECT * FROM EMPS), 'name'))</code>".
+ */
+ public static final SqlCursorConstructor CURSOR =
+ new SqlCursorConstructor();
+
+ /**
+ * The COLUMN_LIST constructor. e.g. the ROW() call in "<code>SELECT * FROM
+ * TABLE(DEDUP(CURSOR(SELECT * FROM EMPS), ROW(name, empno)))</code>".
+ */
+ public static final SqlColumnListConstructor COLUMN_LIST =
+ new SqlColumnListConstructor();
+
+ /**
+ * The <code>UNNEST</code> operator.
+ */
+ public static final SqlUnnestOperator UNNEST =
+ new SqlUnnestOperator(false);
+
+ /**
+ * The <code>UNNEST WITH ORDINALITY</code> operator.
+ */
+ public static final SqlUnnestOperator UNNEST_WITH_ORDINALITY =
+ new SqlUnnestOperator(true);
+
+ /**
+ * The <code>LATERAL</code> operator.
+ */
+ public static final SqlSpecialOperator LATERAL =
+ new SqlLateralOperator(SqlKind.LATERAL);
+
+ /**
+ * The "table function derived table" operator, which a table-valued
+ * function into a relation, e.g. "<code>SELECT * FROM
+ * TABLE(ramp(5))</code>".
+ *
+ * <p>This operator has function syntax (with one argument), whereas
+ * {@link #EXPLICIT_TABLE} is a prefix operator.
+ */
+ public static final SqlSpecialOperator COLLECTION_TABLE =
+ new SqlCollectionTableOperator("TABLE", SqlModality.RELATION);
+
+ public static final SqlOverlapsOperator OVERLAPS =
+ new SqlOverlapsOperator();
+
+ public static final SqlSpecialOperator VALUES =
+ new SqlValuesOperator();
+
+ public static final SqlLiteralChainOperator LITERAL_CHAIN =
+ new SqlLiteralChainOperator();
+
+ public static final SqlThrowOperator THROW = new SqlThrowOperator();
+
+ public static final SqlBetweenOperator BETWEEN =
+ new SqlBetweenOperator(
+ SqlBetweenOperator.Flag.ASYMMETRIC,
+ false);
+
+ public static final SqlBetweenOperator SYMMETRIC_BETWEEN =
+ new SqlBetweenOperator(
+ SqlBetweenOperator.Flag.SYMMETRIC,
+ false);
+
+ public static final SqlBetweenOperator NOT_BETWEEN =
+ new SqlBetweenOperator(
+ SqlBetweenOperator.Flag.ASYMMETRIC,
+ true);
+
+ public static final SqlBetweenOperator SYMMETRIC_NOT_BETWEEN =
+ new SqlBetweenOperator(
+ SqlBetweenOperator.Flag.SYMMETRIC,
+ true);
+
+ public static final SqlSpecialOperator NOT_LIKE =
+ new SqlLikeOperator("NOT LIKE", SqlKind.LIKE, true);
+
+ public static final SqlSpecialOperator LIKE =
+ new SqlLikeOperator("LIKE", SqlKind.LIKE, false);
+
+ public static final SqlSpecialOperator NOT_SIMILAR_TO =
+ new SqlLikeOperator("NOT SIMILAR TO", SqlKind.SIMILAR, true);
+
+ public static final SqlSpecialOperator SIMILAR_TO =
+ new SqlLikeOperator("SIMILAR TO", SqlKind.SIMILAR, false);
+
+ /**
+ * Internal operator used to represent the ESCAPE clause of a LIKE or
+ * SIMILAR TO expression.
+ */
+ public static final SqlSpecialOperator ESCAPE =
+ new SqlSpecialOperator("ESCAPE", SqlKind.ESCAPE, 0);
+
+ public static final SqlCaseOperator CASE = SqlCaseOperator.INSTANCE;
+
+ public static final SqlOperator PROCEDURE_CALL =
+ new SqlProcedureCallOperator();
+
+ public static final SqlOperator NEW = new SqlNewOperator();
+
+ /**
+ * The <code>OVER</code> operator, which applies an aggregate functions to a
+ * {@link SqlWindow window}.
+ *
+ * <p>Operands are as follows:
+ *
+ * <ol>
+ * <li>name of window function ({@link org.apache.calcite.sql.SqlCall})</li>
+ * <li>window name ({@link org.apache.calcite.sql.SqlLiteral}) or window
+ * in-line specification (@link SqlWindowOperator})</li>
+ * </ol>
+ */
+ public static final SqlBinaryOperator OVER = new SqlOverOperator();
+
+ /**
+ * An <code>REINTERPRET</code> operator is internal to the planner. When the
+ * physical storage of two types is the same, this operator may be used to
+ * reinterpret values of one type as the other. This operator is similar to
+ * a cast, except that it does not alter the data value. Like a regular cast
+ * it accepts one operand and stores the target type as the return type. It
+ * performs an overflow check if it has <i>any</i> second operand, whether
+ * true or not.
+ */
+ public static final SqlSpecialOperator REINTERPRET =
+ new SqlSpecialOperator("Reinterpret", SqlKind.REINTERPRET) {
+ public SqlOperandCountRange getOperandCountRange() {
+ return SqlOperandCountRanges.between(1, 2);
+ }
+ };
+
+ /** Internal operator that extracts time periods (year, month, date) from a
+ * date in internal format (number of days since epoch). */
+ public static final SqlSpecialOperator EXTRACT_DATE =
+ new SqlSpecialOperator("EXTRACT_DATE", SqlKind.EXTRACT);
+
+ //-------------------------------------------------------------
+ // FUNCTIONS
+ //-------------------------------------------------------------
+
+ /**
+ * The character substring function: <code>SUBSTRING(string FROM start [FOR
+ * length])</code>.
+ *
+ * <p>If the length parameter is a constant, the length of the result is the
+ * minimum of the length of the input and that length. Otherwise it is the
+ * length of the input.
+ */
+ public static final SqlFunction SUBSTRING = new SqlSubstringFunction();
+
+ /** The {@code REPLACE(string, search, replace)} function. Not standard SQL,
+ * but in Oracle and Postgres. */
+ public static final SqlFunction REPLACE =
+ new SqlFunction("REPLACE", SqlKind.OTHER_FUNCTION,
+ ReturnTypes.ARG0_NULLABLE_VARYING, null,
+ OperandTypes.STRING_STRING_STRING, SqlFunctionCategory.STRING);
+
+ public static final SqlFunction CONVERT =
+ new SqlConvertFunction("CONVERT");
+
+ /**
+ * The <code>TRANSLATE(<i>char_value</i> USING <i>translation_name</i>)</code> function
+ * alters the character set of a string value from one base character set to another.
+ *
+ * <p>It is defined in the SQL standard. See also non-standard
+ * {@link OracleSqlOperatorTable#TRANSLATE3}.
+ */
+ public static final SqlFunction TRANSLATE =
+ new SqlConvertFunction("TRANSLATE");
+
+ public static final SqlFunction OVERLAY = new SqlOverlayFunction();
+
+ /** The "TRIM" function. */
+ public static final SqlFunction TRIM = SqlTrimFunction.INSTANCE;
+
+ public static final SqlFunction POSITION = new SqlPositionFunction();
+
+ public static final SqlFunction CHAR_LENGTH =
+ new SqlFunction(
+ "CHAR_LENGTH",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.INTEGER_NULLABLE,
+ null,
+ OperandTypes.CHARACTER,
+ SqlFunctionCategory.NUMERIC);
+
+ public static final SqlFunction CHARACTER_LENGTH =
+ new SqlFunction(
+ "CHARACTER_LENGTH",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.INTEGER_NULLABLE,
+ null,
+ OperandTypes.CHARACTER,
+ SqlFunctionCategory.NUMERIC);
+
+ public static final SqlFunction UPPER =
+ new SqlFunction(
+ "UPPER",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.ARG0_NULLABLE,
+ null,
+ OperandTypes.CHARACTER,
+ SqlFunctionCategory.STRING);
+
+ public static final SqlFunction LOWER =
+ new SqlFunction(
+ "LOWER",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.ARG0_NULLABLE,
+ null,
+ OperandTypes.CHARACTER,
+ SqlFunctionCategory.STRING);
+
+ public static final SqlFunction INITCAP =
+ new SqlFunction(
+ "INITCAP",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.ARG0_NULLABLE,
+ null,
+ OperandTypes.CHARACTER,
+ SqlFunctionCategory.STRING);
+
+ /**
+ * Uses SqlOperatorTable.useDouble for its return type since we don't know
+ * what the result type will be by just looking at the operand types. For
+ * example POW(int, int) can return a non integer if the second operand is
+ * negative.
+ */
+ public static final SqlFunction POWER =
+ new SqlFunction(
+ "POWER",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.DOUBLE_NULLABLE,
+ null,
+ OperandTypes.NUMERIC_NUMERIC,
+ SqlFunctionCategory.NUMERIC);
+
+ public static final SqlFunction SQRT =
+ new SqlFunction(
+ "SQRT",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.DOUBLE_NULLABLE,
+ null,
+ OperandTypes.NUMERIC,
+ SqlFunctionCategory.NUMERIC);
+
+ public static final SqlFunction MOD =
+ // Return type is same as divisor (2nd operand)
+ // SQL2003 Part2 Section 6.27, Syntax Rules 9
+ new SqlFunction(
+ "MOD",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.ARG1_NULLABLE,
+ null,
+ OperandTypes.EXACT_NUMERIC_EXACT_NUMERIC,
+ SqlFunctionCategory.NUMERIC);
+
+ public static final SqlFunction LN =
+ new SqlFunction(
+ "LN",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.DOUBLE_NULLABLE,
+ null,
+ OperandTypes.NUMERIC,
+ SqlFunctionCategory.NUMERIC);
+
+ public static final SqlFunction LOG10 =
+ new SqlFunction(
+ "LOG10",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.DOUBLE_NULLABLE,
+ null,
+ OperandTypes.NUMERIC,
+ SqlFunctionCategory.NUMERIC);
+
+ public static final SqlFunction ABS =
+ new SqlFunction(
+ "ABS",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.ARG0,
+ null,
+ OperandTypes.NUMERIC_OR_INTERVAL,
+ SqlFunctionCategory.NUMERIC);
+
+ public static final SqlFunction ACOS =
+ new SqlFunction(
+ "ACOS",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.DOUBLE_NULLABLE,
+ null,
+ OperandTypes.NUMERIC,
+ SqlFunctionCategory.NUMERIC);
+
+ public static final SqlFunction ASIN =
+ new SqlFunction(
+ "ASIN",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.DOUBLE_NULLABLE,
+ null,
+ OperandTypes.NUMERIC,
+ SqlFunctionCategory.NUMERIC);
+
+ public static final SqlFunction ATAN =
+ new SqlFunction(
+ "ATAN",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.DOUBLE_NULLABLE,
+ null,
+ OperandTypes.NUMERIC,
+ SqlFunctionCategory.NUMERIC);
+
+ public static final SqlFunction ATAN2 =
+ new SqlFunction(
+ "ATAN2",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.DOUBLE_NULLABLE,
+ null,
+ OperandTypes.NUMERIC_NUMERIC,
+ SqlFunctionCategory.NUMERIC);
+
+ public static final SqlFunction COS =
+ new SqlFunction(
+ "COS",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.DOUBLE_NULLABLE,
+ null,
+ OperandTypes.NUMERIC,
+ SqlFunctionCategory.NUMERIC);
+
+ public static final SqlFunction COT =
+ new SqlFunction(
+ "COT",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.DOUBLE_NULLABLE,
+ null,
+ OperandTypes.NUMERIC,
+ SqlFunctionCategory.NUMERIC);
+
+ public static final SqlFunction DEGREES =
+ new SqlFunction(
+ "DEGREES",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.DOUBLE_NULLABLE,
+ null,
+ OperandTypes.NUMERIC,
+ SqlFunctionCategory.NUMERIC);
+
+ public static final SqlFunction EXP =
+ new SqlFunction(
+ "EXP",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.DOUBLE_NULLABLE,
+ null,
+ OperandTypes.NUMERIC,
+ SqlFunctionCategory.NUMERIC);
+
+ public static final SqlFunction RADIANS =
+ new SqlFunction(
+ "RADIANS",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.DOUBLE_NULLABLE,
+ null,
+ OperandTypes.NUMERIC,
+ SqlFunctionCategory.NUMERIC);
+
+ public static final SqlFunction ROUND =
+ new SqlFunction(
+ "ROUND",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.ARG0,
+ null,
+ OperandTypes.NUMERIC_INTEGER,
+ SqlFunctionCategory.NUMERIC);
+
+ public static final SqlFunction SIGN =
+ new SqlFunction(
+ "SIGN",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.ARG0,
+ null,
+ OperandTypes.NUMERIC,
+ SqlFunctionCategory.NUMERIC);
+
+ public static final SqlFunction SIN =
+ new SqlFunction(
+ "SIN",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.DOUBLE_NULLABLE,
+ null,
+ OperandTypes.NUMERIC,
+ SqlFunctionCategory.NUMERIC);
+
+
+ public static final SqlFunction TAN =
+ new SqlFunction(
+ "TAN",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.DOUBLE_NULLABLE,
+ null,
+ OperandTypes.NUMERIC,
+ SqlFunctionCategory.NUMERIC);
+
+ public static final SqlFunction TRUNCATE =
+ new SqlFunction(
+ "TRUNCATE",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.ARG0,
+ null,
+ OperandTypes.NUMERIC_INTEGER,
+ SqlFunctionCategory.NUMERIC);
+
+ public static final SqlFunction PI =
+ new SqlBaseContextVariable("PI", ReturnTypes.DOUBLE,
+ SqlFunctionCategory.NUMERIC);
+
+ /** {@code FINAL} function to be used within {@code MATCH_RECOGNIZE}. */
+ public static final SqlFunction FINAL =
+ new SqlFunction("FINAL", SqlKind.FINAL, ReturnTypes.ARG0_NULLABLE, null,
+ OperandTypes.ANY, SqlFunctionCategory.MATCH_RECOGNIZE);
+
+ /** {@code RUNNING} function to be used within {@code MATCH_RECOGNIZE}. */
+ public static final SqlFunction RUNNING =
+ new SqlFunction("RUNNING", SqlKind.RUNNING, ReturnTypes.ARG0_NULLABLE,
+ null, OperandTypes.ANY, SqlFunctionCategory.MATCH_RECOGNIZE);
+
+ /** {@code FIRST} function to be used within {@code MATCH_RECOGNIZE}. */
+ public static final SqlFunction FIRST =
+ new SqlFunction("FIRST", SqlKind.FIRST, ReturnTypes.ARG0_NULLABLE,
+ null, OperandTypes.ANY_NUMERIC, SqlFunctionCategory.MATCH_RECOGNIZE);
+
+ /** {@code LAST} function to be used within {@code MATCH_RECOGNIZE}. */
+ public static final SqlFunction LAST =
+ new SqlFunction("LAST", SqlKind.LAST, ReturnTypes.ARG0_NULLABLE,
+ null, OperandTypes.ANY_NUMERIC, SqlFunctionCategory.MATCH_RECOGNIZE);
+
+ /** {@code PREV} function to be used within {@code MATCH_RECOGNIZE}. */
+ public static final SqlFunction PREV =
+ new SqlFunction("PREV", SqlKind.PREV, ReturnTypes.ARG0_NULLABLE,
+ null, OperandTypes.ANY_NUMERIC, SqlFunctionCategory.MATCH_RECOGNIZE);
+
+ /** {@code NEXT} function to be used within {@code MATCH_RECOGNIZE}. */
+ public static final SqlFunction NEXT =
+ new SqlFunction("NEXT", SqlKind.NEXT, ReturnTypes.ARG0_NULLABLE, null,
+ OperandTypes.ANY_NUMERIC, SqlFunctionCategory.MATCH_RECOGNIZE);
+
+ public static final SqlFunction NULLIF = new SqlNullifFunction();
+
+ /**
+ * The COALESCE builtin function.
+ */
+ public static final SqlFunction COALESCE = new SqlCoalesceFunction();
+
+ /**
+ * The <code>FLOOR</code> function.
+ */
+ public static final SqlFunction FLOOR = new SqlFloorFunction(SqlKind.FLOOR);
+
+ /**
+ * The <code>CEIL</code> function.
+ */
+ public static final SqlFunction CEIL = new SqlFloorFunction(SqlKind.CEIL);
+
+ /**
+ * The <code>USER</code> function.
+ */
+ public static final SqlFunction USER =
+ new SqlStringContextVariable("USER");
+
+ /**
+ * The <code>CURRENT_USER</code> function.
+ */
+ public static final SqlFunction CURRENT_USER =
+ new SqlStringContextVariable("CURRENT_USER");
+
+ /**
+ * The <code>SESSION_USER</code> function.
+ */
+ public static final SqlFunction SESSION_USER =
+ new SqlStringContextVariable("SESSION_USER");
+
+ /**
+ * The <code>SYSTEM_USER</code> function.
+ */
+ public static final SqlFunction SYSTEM_USER =
+ new SqlStringContextVariable("SYSTEM_USER");
+
+ /**
+ * The <code>CURRENT_PATH</code> function.
+ */
+ public static final SqlFunction CURRENT_PATH =
+ new SqlStringContextVariable("CURRENT_PATH");
+
+ /**
+ * The <code>CURRENT_ROLE</code> function.
+ */
+ public static final SqlFunction CURRENT_ROLE =
+ new SqlStringContextVariable("CURRENT_ROLE");
+
+ /**
+ * The <code>CURRENT_CATALOG</code> function.
+ */
+ public static final SqlFunction CURRENT_CATALOG =
+ new SqlStringContextVariable("CURRENT_CATALOG");
+
+ /**
+ * The <code>CURRENT_SCHEMA</code> function.
+ */
+ public static final SqlFunction CURRENT_SCHEMA =
+ new SqlStringContextVariable("CURRENT_SCHEMA");
+
+ /**
+ * The <code>LOCALTIME [(<i>precision</i>)]</code> function.
+ */
+ public static final SqlFunction LOCALTIME =
+ new SqlAbstractTimeFunction("LOCALTIME", SqlTypeName.TIME);
+
+ /**
+ * The <code>LOCALTIMESTAMP [(<i>precision</i>)]</code> function.
+ */
+ public static final SqlFunction LOCALTIMESTAMP =
+ new SqlAbstractTimeFunction("LOCALTIMESTAMP", SqlTypeName.TIMESTAMP);
+
+ /**
+ * The <code>CURRENT_TIME [(<i>precision</i>)]</code> function.
+ */
+ public static final SqlFunction CURRENT_TIME =
+ new SqlAbstractTimeFunction("CURRENT_TIME", SqlTypeName.TIME);
+
+ /**
+ * The <code>CURRENT_TIMESTAMP [(<i>precision</i>)]</code> function.
+ */
+ public static final SqlFunction CURRENT_TIMESTAMP =
+ new SqlAbstractTimeFunction("CURRENT_TIMESTAMP", SqlTypeName.TIMESTAMP);
+
+ /**
+ * The <code>CURRENT_DATE</code> function.
+ */
+ public static final SqlFunction CURRENT_DATE =
+ new SqlCurrentDateFunction();
+
+ /** The <code>TIMESTAMPADD</code> function. */
+ public static final SqlFunction TIMESTAMP_ADD = new SqlTimestampAddFunction();
+
+ /** The <code>TIMESTAMPDIFF</code> function. */
+ public static final SqlFunction TIMESTAMP_DIFF = new SqlTimestampDiffFunction();
+
+ /**
+ * Use of the <code>IN_FENNEL</code> operator forces the argument to be
+ * evaluated in Fennel. Otherwise acts as identity function.
+ */
+ public static final SqlFunction IN_FENNEL =
+ new SqlMonotonicUnaryFunction(
+ "IN_FENNEL",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.ARG0,
+ null,
+ OperandTypes.ANY,
+ SqlFunctionCategory.SYSTEM);
+
+ /**
+ * The SQL <code>CAST</code> operator.
+ *
+ * <p>The SQL syntax is
+ *
+ * <blockquote><code>CAST(<i>expression</i> AS <i>type</i>)</code>
+ * </blockquote>
+ *
+ * <p>When the CAST operator is applies as a {@link SqlCall}, it has two
+ * arguments: the expression and the type. The type must not include a
+ * constraint, so <code>CAST(x AS INTEGER NOT NULL)</code>, for instance, is
+ * invalid.</p>
+ *
+ * <p>When the CAST operator is applied as a <code>RexCall</code>, the
+ * target type is simply stored as the return type, not an explicit operand.
+ * For example, the expression <code>CAST(1 + 2 AS DOUBLE)</code> will
+ * become a call to <code>CAST</code> with the expression <code>1 + 2</code>
+ * as its only operand.</p>
+ *
+ * <p>The <code>RexCall</code> form can also have a type which contains a
+ * <code>NOT NULL</code> constraint. When this expression is implemented, if
+ * the value is NULL, an exception will be thrown.</p>
+ */
+ public static final SqlFunction CAST = new SqlCastFunction();
+
+ /**
+ * The SQL <code>EXTRACT</code> operator. Extracts a specified field value
+ * from a DATETIME or an INTERVAL. E.g.<br>
+ * <code>EXTRACT(HOUR FROM INTERVAL '364 23:59:59')</code> returns <code>
+ * 23</code>
+ */
+ public static final SqlFunction EXTRACT = new SqlExtractFunction();
+
+ /**
+ * The SQL <code>YEAR</code> operator. Returns the Year
+ * from a DATETIME E.g.<br>
+ * <code>YEAR(date '2008-9-23')</code> returns <code>
+ * 2008</code>
+ */
+ public static final SqlDatePartFunction YEAR =
+ new SqlDatePartFunction("YEAR", TimeUnit.YEAR);
+
+ /**
+ * The SQL <code>QUARTER</code> operator. Returns the Quarter
+ * from a DATETIME E.g.<br>
+ * <code>QUARTER(date '2008-9-23')</code> returns <code>
+ * 3</code>
+ */
+ public static final SqlDatePartFunction QUARTER =
+ new SqlDatePartFunction("QUARTER", TimeUnit.QUARTER);
+
+ /**
+ * The SQL <code>MONTH</code> operator. Returns the Month
+ * from a DATETIME E.g.<br>
+ * <code>MONTH(date '2008-9-23')</code> returns <code>
+ * 9</code>
+ */
+ public static final SqlDatePartFunction MONTH =
+ new SqlDatePartFunction("MONTH", TimeUnit.MONTH);
+
+ /**
+ * The SQL <code>WEEK</code> operator. Returns the Week
+ * from a DATETIME E.g.<br>
+ * <code>WEEK(date '2008-9-23')</code> returns <code>
+ * 39</code>
+ */
+ public static final SqlDatePartFunction WEEK =
+ new SqlDatePartFunction("WEEK", TimeUnit.WEEK);
+
+ /**
+ * The SQL <code>DAYOFYEAR</code> operator. Returns the DOY
+ * from a DATETIME E.g.<br>
+ * <code>DAYOFYEAR(date '2008-9-23')</code> returns <code>
+ * 267</code>
+ */
+ public static final SqlDatePartFunction DAYOFYEAR =
+ new SqlDatePartFunction("DAYOFYEAR", TimeUnit.DOY);
+
+ /**
+ * The SQL <code>DAYOFMONTH</code> operator. Returns the Day
+ * from a DATETIME E.g.<br>
+ * <code>DAYOFMONTH(date '2008-9-23')</code> returns <code>
+ * 23</code>
+ */
+ public static final SqlDatePartFunction DAYOFMONTH =
+ new SqlDatePartFunction("DAYOFMONTH", TimeUnit.DAY);
+
+ /**
+ * The SQL <code>DAYOFWEEK</code> operator. Returns the DOW
+ * from a DATETIME E.g.<br>
+ * <code>DAYOFWEEK(date '2008-9-23')</code> returns <code>
+ * 2</code>
+ */
+ public static final SqlDatePartFunction DAYOFWEEK =
+ new SqlDatePartFunction("DAYOFWEEK", TimeUnit.DOW);
+
+ /**
+ * The SQL <code>HOUR</code> operator. Returns the Hour
+ * from a DATETIME E.g.<br>
+ * <code>HOUR(timestamp '2008-9-23 01:23:45')</code> returns <code>
+ * 1</code>
+ */
+ public static final SqlDatePartFunction HOUR =
+ new SqlDatePartFunction("HOUR", TimeUnit.HOUR);
+
+ /**
+ * The SQL <code>MINUTE</code> operator. Returns the Minute
+ * from a DATETIME E.g.<br>
+ * <code>MINUTE(timestamp '2008-9-23 01:23:45')</code> returns <code>
+ * 23</code>
+ */
+ public static final SqlDatePartFunction MINUTE =
+ new SqlDatePartFunction("MINUTE", TimeUnit.MINUTE);
+
+ /**
+ * The SQL <code>SECOND</code> operator. Returns the Second
+ * from a DATETIME E.g.<br>
+ * <code>SECOND(timestamp '2008-9-23 01:23:45')</code> returns <code>
+ * 45</code>
+ */
+ public static final SqlDatePartFunction SECOND =
+ new SqlDatePartFunction("SECOND", TimeUnit.SECOND);
+
+ /**
+ * The ELEMENT operator, used to convert a multiset with only one item to a
+ * "regular" type. Example ... log(ELEMENT(MULTISET[1])) ...
+ */
+ public static final SqlFunction ELEMENT =
+ new SqlFunction(
+ "ELEMENT",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.MULTISET_ELEMENT_NULLABLE,
+ null,
+ OperandTypes.COLLECTION,
+ SqlFunctionCategory.SYSTEM);
+
+ /**
+ * The item operator {@code [ ... ]}, used to access a given element of an
+ * array or map. For example, {@code myArray[3]} or {@code "myMap['foo']"}.
+ *
+ * <p>The SQL standard calls the ARRAY variant a
+ * <array element reference>. Index is 1-based. The standard says
+ * to raise "data exception - array element error" but we currently return
+ * null.</p>
+ *
+ * <p>MAP is not standard SQL.</p>
+ */
+ public static final SqlOperator ITEM = new SqlItemOperator();
+
+ /**
+ * The ARRAY Value Constructor. e.g. "<code>ARRAY[1, 2, 3]</code>".
+ */
+ public static final SqlArrayValueConstructor ARRAY_VALUE_CONSTRUCTOR =
+ new SqlArrayValueConstructor();
+
+ /**
+ * The MAP Value Constructor,
+ * e.g. "<code>MAP['washington', 1, 'obama', 44]</code>".
+ */
+ public static final SqlMapValueConstructor MAP_VALUE_CONSTRUCTOR =
+ new SqlMapValueConstructor();
+
+ /**
+ * The internal "$SLICE" operator takes a multiset of records and returns a
+ * multiset of the first column of those records.
+ *
+ * <p>It is introduced when multisets of scalar types are created, in order
+ * to keep types consistent. For example, <code>MULTISET [5]</code> has type
+ * <code>INTEGER MULTISET</code> but is translated to an expression of type
+ * <code>RECORD(INTEGER EXPR$0) MULTISET</code> because in our internal
+ * representation of multisets, every element must be a record. Applying the
+ * "$SLICE" operator to this result converts the type back to an <code>
+ * INTEGER MULTISET</code> multiset value.
+ *
+ * <p><code>$SLICE</code> is often translated away when the multiset type is
+ * converted back to scalar values.
+ */
+ public static final SqlInternalOperator SLICE =
+ new SqlInternalOperator(
+ "$SLICE",
+ SqlKind.OTHER,
+ 0,
+ false,
+ ReturnTypes.MULTISET_PROJECT0,
+ null,
+ OperandTypes.RECORD_COLLECTION) {
+ };
+
+ /**
+ * The internal "$ELEMENT_SLICE" operator returns the first field of the
+ * only element of a multiset.
+ *
+ * <p>It is introduced when multisets of scalar types are created, in order
+ * to keep types consistent. For example, <code>ELEMENT(MULTISET [5])</code>
+ * is translated to <code>$ELEMENT_SLICE(MULTISET (VALUES ROW (5
+ * EXPR$0))</code> It is translated away when the multiset type is converted
+ * back to scalar values.</p>
+ *
+ * <p>NOTE: jhyde, 2006/1/9: Usages of this operator are commented out, but
+ * I'm not deleting the operator, because some multiset tests are disabled,
+ * and we may need this operator to get them working!</p>
+ */
+ public static final SqlInternalOperator ELEMENT_SLICE =
+ new SqlInternalOperator(
+ "$ELEMENT_SLICE",
+ SqlKind.OTHER,
+ 0,
+ false,
+ ReturnTypes.MULTISET_RECORD,
+ null,
+ OperandTypes.MULTISET) {
+ public void unparse(
+ SqlWriter writer,
+ SqlCall call,
+ int leftPrec,
+ int rightPrec) {
+ SqlUtil.unparseFunctionSyntax(
+ this,
+ writer, call);
+ }
+ };
+
+ /**
+ * The internal "$SCALAR_QUERY" operator returns a scalar value from a
+ * record type. It assumes the record type only has one field, and returns
+ * that field as the output.
+ */
+ public static final SqlInternalOperator SCALAR_QUERY =
+ new SqlInternalOperator(
+ "$SCALAR_QUERY",
+ SqlKind.SCALAR_QUERY,
+ 0,
+ false,
+ ReturnTypes.RECORD_TO_SCALAR,
+ null,
+ OperandTypes.RECORD_TO_SCALAR) {
+ public void unparse(
+ SqlWriter writer,
+ SqlCall call,
+ int leftPrec,
+ int rightPrec) {
+ final SqlWriter.Frame frame = writer.startList("(", ")");
+ call.operand(0).unparse(writer, 0, 0);
+ writer.endList(frame);
+ }
+
+ public boolean argumentMustBeScalar(int ordinal) {
+ // Obvious, really.
+ return false;
+ }
+ };
+
+ /**
+ * The CARDINALITY operator, used to retrieve the number of elements in a
+ * MULTISET, ARRAY or MAP.
+ */
+ public static final SqlFunction CARDINALITY =
+ new SqlFunction(
+ "CARDINALITY",
+ SqlKind.OTHER_FUNCTION,
+ ReturnTypes.INTEGER_NULLABLE,
+ null,
+ OperandTypes.COLLECTION_OR_MAP,
+ SqlFunctionCategory.SYSTEM);
+
+ /**
+ * The COLLECT operator. Multiset aggregator function.
+ */
+ public static final SqlAggFunction COLLECT =
+ new SqlAggFunction("COLLECT",
+ null,
+ SqlKind.COLLECT,
+ ReturnTypes.TO_MULTISET,
+ null,
+ OperandTypes.ANY,
+ SqlFunctionCategory.SYSTEM, false, false) {
+ };
+
+ /**
+ * The FUSION operator. Multiset aggregator function.
+ */
+ public static final SqlFunction FUSION =
+ new SqlAggFunction("FUSION", null,
+ SqlKind.FUSION,
+ ReturnTypes.ARG0,
+ null,
+ OperandTypes.MULTISET,
+ SqlFunctionCategory.SYSTEM, false, false) {
+ };
+
+ /**
+ * The sequence next value function: <code>NEXT VALUE FOR sequence</code>
+ */
+ public static final SqlOperator NEXT_VALUE =
+ new SqlSequenceValueOperator(SqlKind.NEXT_VALUE);
+
+ /**
+ * The sequence current value function: <code>CURRENT VALUE FOR
+ * sequence</code>
+ */
+ public static final SqlOperator CURRENT_VALUE =
+ new SqlSequenceValueOperator(SqlKind.CURRENT_VALUE);
+
+ /**
+ * The <code>TABLESAMPLE</code> operator.
+ *
+ * <p>Examples:
+ *
+ * <ul>
+ * <li><code><query> TABLESAMPLE SUBSTITUTE('sampleName')</code>
+ * (non-standard)
+ * <li><code><query> TABLESAMPLE BERNOULLI(<percent>)
+ * [REPEATABLE(<seed>)]</code> (standard, but not implemented for FTRS
+ * yet)
+ * <li><code><query> TABLESAMPLE SYSTEM(<percent>)
+ * [REPEATABLE(<seed>)]</code> (standard, but not implemented for FTRS
+ * yet)
+ * </ul>
+ *
+ * <p>Operand #0 is a query or table; Operand #1 is a {@link SqlSampleSpec}
+ * wrapped in a {@link SqlLiteral}.
+ */
+ public static final SqlSpecialOperator TABLESAMPLE =
+ new SqlSpecialOperator(
+ "TABLESAMPLE",
+ SqlKind.TABLESAMPLE,
+ 20,
+ true,
+ ReturnTypes.ARG0,
+ null,
+ OperandTypes.VARIADIC) {
+ public void unparse(
+ SqlWriter writer,
+ SqlCall call,
+ int leftPrec,
+ int rightPrec) {
+ call.operand(0).unparse(writer, leftPrec, 0);
+ writer.keyword("TABLESAMPLE");
+ call.operand(1).unparse(writer, 0, rightPrec);
+ }
+ };
+
+ /** The {@code TUMBLE} group function. */
+ public static final SqlGroupFunction TUMBLE =
+ new SqlGroupFunction(SqlKind.TUMBLE, null,
+ OperandTypes.or(OperandTypes.DATETIME_INTERVAL,
+ OperandTypes.DATETIME_INTERVAL_TIME)) {
+ @Override List<SqlGroupFunction> getAuxiliaryFunctions() {
+ return ImmutableList.of(TUMBLE_START, TUMBLE_END);
+ }
+ };
+
+ /** The {@code TUMBLE_START} auxiliary function of
+ * the {@code TUMBLE} group function. */
+ public static final SqlGroupFunction TUMBLE_START =
+ TUMBLE.auxiliary(SqlKind.TUMBLE_START);
+
+ /** The {@code TUMBLE_END} auxiliary function of
+ * the {@code TUMBLE} group function. */
+ public static final SqlGroupFunction TUMBLE_END =
+ TUMBLE.auxiliary(SqlKind.TUMBLE_END);
+
+ /** The {@code HOP} group function. */
+ public static final SqlGroupFunction HOP =
+ new SqlGroupFunction(SqlKind.HOP, null,
+ OperandTypes.or(OperandTypes.DATETIME_INTERVAL_INTERVAL,
+ OperandTypes.DATETIME_INTERVAL_INTERVAL_TIME)) {
+ @Override List<SqlGroupFunction> getAuxiliaryFunctions() {
+ return ImmutableList.of(HOP_START, HOP_END);
+ }
+ };
+
+ /** The {@code HOP_START} auxiliary function of
+ * the {@code HOP} group function. */
+ public static final SqlGroupFunction HOP_START =
+ HOP.auxiliary(SqlKind.HOP_START);
+
+ /** The {@code HOP_END} auxiliary function of
+ * the {@code HOP} group function. */
+ public static final SqlGroupFunction HOP_END =
+ HOP.auxiliary(SqlKind.HOP_END);
+
+ /** The {@code SESSION} group function. */
+ public static final SqlGroupFunction SESSION =
+ new SqlGroupFunction(SqlKind.SESSION, null,
+ OperandTypes.or(OperandTypes.DATETIME_INTERVAL,
+ OperandTypes.DATETIME_INTERVAL_TIME)) {
+ @Override List<SqlGroupFunction> getAuxiliaryFunctions() {
+ return ImmutableList.of(SESSION_START, SESSION_END);
+ }
+ };
+
+ /** The {@code SESSION_START} auxiliary function of
+ * the {@code SESSION} group function. */
+ public static final SqlGroupFunction SESSION_START =
+ SESSION.auxiliary(SqlKind.SESSION_START);
+
+ /** The {@code SESSION_END} auxiliary function of
+ * the {@code SESSION} group function. */
+ public static final SqlGroupFunction SESSION_END =
+ SESSION.auxiliary(SqlKind.SESSION_END);
+
+ /** {@code |} operator to create alternate patterns
+ * within {@code MATCH_RECOGNIZE}.
+ *
+ * <p>If {@code p1} and {@code p2} are patterns then {@code p1 | p2} is a
+ * pattern that matches {@code p1} or {@code p2}. */
+ public static final SqlBinaryOperator PATTERN_ALTER =
+ new SqlBinaryOperator("|", SqlKind.PATTERN_ALTER, 70, true, null, null, null);
+
+ /** Operator to concatenate patterns within {@code MATCH_RECOGNIZE}.
+ *
+ * <p>If {@code p1} and {@code p2} are patterns then {@code p1 p2} is a
+ * pattern that matches {@code p1} followed by {@code p2}. */
+ public static final SqlBinaryOperator PATTERN_CONCAT =
+ new SqlBinaryOperator("", SqlKind.PATTERN_CONCAT, 80, true, null, null, null);
+
+ /** Operator to quantify patterns within {@code MATCH_RECOGNIZE}.
+ *
+ * <p>If {@code p} is a pattern then {@code p{3, 5}} is a
+ * pattern that matches between 3 and 5 occurrences of {@code p}. */
+ public static final SqlSpecialOperator PATTERN_QUANTIFIER =
+ new SqlSpecialOperator("PATTERN_QUANTIFIER", SqlKind.PATTERN_QUANTIFIER,
+ 90) {
+ @Override public void unparse(SqlWriter writer, SqlCall call,
+ int leftPrec, int rightPrec) {
+ call.operand(0).unparse(writer, this.getLeftPrec(), this.getRightPrec());
+ int startNum = ((SqlNumericLiteral) call.operand(1)).intValue(true);
+ SqlNumericLiteral endRepNum = call.operand(2);
+ boolean isReluctant = ((SqlLiteral) call.operand(3)).booleanValue();
+ int endNum = endRepNum.intValue(true);
+ if (startNum == endNum) {
+ writer.keyword("{ " + startNum + " }");
+ } else {
+ if (endNum == -1) {
+ if (startNum == 0) {
+ writer.keyword("*");
+ } else if (startNum == 1) {
+ writer.keyword("+");
+ } else {
+ writer.keyword("{ " + startNum + ", }");
+ }
+ } else {
+ if (startNum == 0 && endNum == 1) {
+ writer.keyword("?");
+ } else if (startNum == -1) {
+ writer.keyword("{ , " + endNum + " }");
+ } else {
+ writer.keyword("{ " + startNum + ", " + endNum + " }");
+ }
+ }
+ if (isReluctant) {
+ writer.keyword("?");
+ }
+ }
+ }
+ };
+
+ /** {@code PERMUTE} operator to combine patterns within
+ * {@code MATCH_RECOGNIZE}.
+ *
+ * <p>If {@code p1} and {@code p2} are patterns then {@code PERMUTE (p1, p2)}
+ * is a pattern that matches all permutations of {@code p1} and
+ * {@code p2}. */
+ public static final SqlSpecialOperator PATTERN_PERMUTE =
+ new SqlSpecialOperator("PATTERN_PERMUTE", SqlKind.PATTERN_PERMUTE, 100) {
+ @Override public void unparse(SqlWriter writer, SqlCall call,
+ int leftPrec, int rightPrec) {
+ writer.keyword("PERMUTE");
+ SqlWriter.Frame frame = writer.startList("(", ")");
+ for (int i = 0; i < call.getOperandList().size(); i++) {
+ SqlNode pattern = call.getOperandList().get(i);
+ pattern.unparse(writer, 0, 0);
+ if (i != call.getOperandList().size() - 1) {
+ writer.print(",");
+ }
+ }
+ writer.endList(frame);
+ }
+ };
+
+ /** {@code EXCLUDE} operator within {@code MATCH_RECOGNIZE}.
+ *
+ * <p>If {@code p} is a pattern then {@code {- p -} }} is a
+ * pattern that excludes {@code p} from the output. */
+ public static final SqlSpecialOperator PATTERN_EXCLUDE =
+ new SqlSpecialOperator("PATTERN_EXCLUDE", SqlKind.PATTERN_EXCLUDED,
+ 100) {
+ @Override public void unparse(SqlWriter writer, SqlCall call,
+ int leftPrec, int rightPrec) {
+ SqlWriter.Frame frame = writer.startList("{-", "-}");
+ SqlNode node = call.getOperandList().get(0);
+ node.unparse(writer, 0, 0);
+ writer.endList(frame);
+ }
+ };
+
+ //~ Methods ----------------------------------------------------------------
+
+ /**
+ * Returns the standard operator table, creating it if necessary.
+ */
+ public static synchronized SqlStdOperatorTable instance() {
+ if (instance == null) {
+ // Creates and initializes the standard operator table.
+ // Uses two-phase construction, because we can't initialize the
+ // table until the constructor of the sub-class has completed.
+ instance = new SqlStdOperatorTable();
+ instance.init();
+ }
+ return instance;
+ }
+
+ /** Returns the group function for which a given kind is an auxiliary
+ * function, or null if it is not an auxiliary function. */
+ public static SqlGroupFunction auxiliaryToGroup(SqlKind kind) {
+ switch (kind) {
+ case TUMBLE_START:
+ case TUMBLE_END:
+ return TUMBLE;
+ case HOP_START:
+ case HOP_END:
+ return HOP;
+ case SESSION_START:
+ case SESSION_END:
+ return SESSION;
+ default:
+ return null;
+ }
+ }
+
+ /** Converts a call to a grouped auxiliary function
+ * to a call to the grouped window function. For other calls returns null.
+ *
+ * <p>For example, converts {@code TUMBLE_START(rowtime, INTERVAL '1' HOUR))}
+ * to {@code TUMBLE(rowtime, INTERVAL '1' HOUR))}. */
+ public static SqlCall convertAuxiliaryToGroupCall(SqlCall call) {
+ final SqlOperator op = call.getOperator();
+ if (op instanceof SqlGroupFunction
+ && op.isGroupAuxiliary()) {
+ return copy(call, ((SqlGroupFunction) op).groupFunction);
+ }
+ return null;
+ }
+
+ /** Converts a call to a grouped window function to a call to its auxiliary
+ * window function(s). For other calls returns null.
+ *
+ * <p>For example, converts {@code TUMBLE_START(rowtime, INTERVAL '1' HOUR))}
+ * to {@code TUMBLE(rowtime, INTERVAL '1' HOUR))}. */
+ public static List<Pair<SqlNode, AuxiliaryConverter>>
+ convertGroupToAuxiliaryCalls(SqlCall call) {
+ final SqlOperator op = call.getOperator();
+ if (op instanceof SqlGroupFunction
+ && op.isGroup()) {
+ ImmutableList.Builder<Pair<SqlNode, AuxiliaryConverter>> builder =
+ ImmutableList.builder();
+ for (final SqlGroupFunction f
+ : ((SqlGroupFunction) op).getAuxiliaryFunctions()) {
+ builder.add(
+ Pair.<SqlNode, AuxiliaryConverter>of(copy(call, f),
+ new AuxiliaryConverter.Impl(f)));
+ }
+ return builder.build();
+ }
+ return ImmutableList.of();
+ }
+
+ /** Creates a copy of a call with a new operator. */
+ private static SqlCall copy(SqlCall call, SqlOperator operator) {
+ final List<SqlNode> list = call.getOperandList();
+ return new SqlBasicCall(operator, list.toArray(new SqlNode[list.size()]),
+ call.getParserPosition());
+ }
+
+}
+
+// End SqlStdOperatorTable.java
http://git-wip-us.apache.org/repos/asf/flink/blob/2d33c0be/flink-libraries/flink-table/src/main/java/org/apache/calcite/sql/validate/AggChecker.java
----------------------------------------------------------------------
diff --git a/flink-libraries/flink-table/src/main/java/org/apache/calcite/sql/validate/AggChecker.java b/flink-libraries/flink-table/src/main/java/org/apache/calcite/sql/validate/AggChecker.java
new file mode 100644
index 0000000..56a364f
--- /dev/null
+++ b/flink-libraries/flink-table/src/main/java/org/apache/calcite/sql/validate/AggChecker.java
@@ -0,0 +1,225 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to you under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.calcite.sql.validate;
+
+/*
+ * THIS FILE HAS BEEN COPIED FROM THE APACHE CALCITE PROJECT UNTIL CALCITE-1761 IS FIXED.
+ */
+
+import org.apache.calcite.sql.SqlCall;
+import org.apache.calcite.sql.SqlIdentifier;
+import org.apache.calcite.sql.SqlKind;
+import org.apache.calcite.sql.SqlNode;
+import org.apache.calcite.sql.SqlNodeList;
+import org.apache.calcite.sql.SqlSelect;
+import org.apache.calcite.sql.SqlUtil;
+import org.apache.calcite.sql.SqlWindow;
+import org.apache.calcite.sql.fun.SqlStdOperatorTable;
+import org.apache.calcite.sql.util.SqlBasicVisitor;
+import org.apache.calcite.util.Litmus;
+
+import java.util.ArrayDeque;
+import java.util.Deque;
+import java.util.List;
+
+import static org.apache.calcite.util.Static.RESOURCE;
+
+/**
+ * Visitor which throws an exception if any component of the expression is not a
+ * group expression.
+ */
+class AggChecker extends SqlBasicVisitor<Void> {
+ //~ Instance fields --------------------------------------------------------
+
+ private final Deque<SqlValidatorScope> scopes = new ArrayDeque<>();
+ private final List<SqlNode> extraExprs;
+ private final List<SqlNode> groupExprs;
+ private boolean distinct;
+ private SqlValidatorImpl validator;
+
+ //~ Constructors -----------------------------------------------------------
+
+ /**
+ * Creates an AggChecker.
+ *
+ * @param validator Validator
+ * @param scope Scope
+ * @param groupExprs Expressions in GROUP BY (or SELECT DISTINCT) clause,
+ * that are therefore available
+ * @param distinct Whether aggregation checking is because of a SELECT
+ * DISTINCT clause
+ */
+ AggChecker(
+ SqlValidatorImpl validator,
+ AggregatingScope scope,
+ List<SqlNode> extraExprs,
+ List<SqlNode> groupExprs,
+ boolean distinct) {
+ this.validator = validator;
+ this.extraExprs = extraExprs;
+ this.groupExprs = groupExprs;
+ this.distinct = distinct;
+ this.scopes.push(scope);
+ }
+
+ //~ Methods ----------------------------------------------------------------
+
+ boolean isGroupExpr(SqlNode expr) {
+ for (SqlNode groupExpr : groupExprs) {
+ if (groupExpr.equalsDeep(expr, Litmus.IGNORE)) {
+ return true;
+ }
+ }
+
+ for (SqlNode extraExpr : extraExprs) {
+ if (extraExpr.equalsDeep(expr, Litmus.IGNORE)) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ public Void visit(SqlIdentifier id) {
+ if (isGroupExpr(id) || id.isStar()) {
+ // Star may validly occur in "SELECT COUNT(*) OVER w"
+ return null;
+ }
+
+ // Is it a call to a parentheses-free function?
+ SqlCall call =
+ SqlUtil.makeCall(
+ validator.getOperatorTable(),
+ id);
+ if (call != null) {
+ return call.accept(this);
+ }
+
+ // Didn't find the identifier in the group-by list as is, now find
+ // it fully-qualified.
+ // TODO: It would be better if we always compared fully-qualified
+ // to fully-qualified.
+ final SqlQualified fqId = scopes.peek().fullyQualify(id);
+ if (isGroupExpr(fqId.identifier)) {
+ return null;
+ }
+ SqlNode originalExpr = validator.getOriginal(id);
+ final String exprString = originalExpr.toString();
+ throw validator.newValidationError(originalExpr,
+ distinct
+ ? RESOURCE.notSelectDistinctExpr(exprString)
+ : RESOURCE.notGroupExpr(exprString));
+ }
+
+ public Void visit(SqlCall call) {
+ final SqlValidatorScope scope = scopes.peek();
+ if (call.getOperator().isAggregator()) {
+ if (distinct) {
+ if (scope instanceof AggregatingSelectScope) {
+ SqlNodeList selectList =
+ ((SqlSelect) scope.getNode()).getSelectList();
+
+ // Check if this aggregation function is just an element in the select
+ for (SqlNode sqlNode : selectList) {
+ if (sqlNode.getKind() == SqlKind.AS) {
+ sqlNode = ((SqlCall) sqlNode).operand(0);
+ }
+
+ if (validator.expand(sqlNode, scope)
+ .equalsDeep(call, Litmus.IGNORE)) {
+ return null;
+ }
+ }
+ }
+
+ // Cannot use agg fun in ORDER BY clause if have SELECT DISTINCT.
+ SqlNode originalExpr = validator.getOriginal(call);
+ final String exprString = originalExpr.toString();
+ throw validator.newValidationError(call,
+ RESOURCE.notSelectDistinctExpr(exprString));
+ }
+
+ // For example, 'sum(sal)' in 'SELECT sum(sal) FROM emp GROUP
+ // BY deptno'
+ return null;
+ }
+ if (call.getKind() == SqlKind.FILTER) {
+ call.operand(0).accept(this);
+ return null;
+ }
+ // Visit the operand in window function
+ if (call.getKind() == SqlKind.OVER) {
+ for (SqlNode operand : call.<SqlCall>operand(0).getOperandList()) {
+ operand.accept(this);
+ }
+ // Check the OVER clause
+ final SqlNode over = call.operand(1);
+ if (over instanceof SqlCall) {
+ over.accept(this);
+ } else if (over instanceof SqlIdentifier) {
+ // Check the corresponding SqlWindow in WINDOW clause
+ final SqlWindow window =
+ scope.lookupWindow(((SqlIdentifier) over).getSimple());
+ window.getPartitionList().accept(this);
+ window.getOrderList().accept(this);
+ }
+ }
+ if (isGroupExpr(call)) {
+ // This call matches an expression in the GROUP BY clause.
+ return null;
+ }
+
+ final SqlCall groupCall =
+ SqlStdOperatorTable.convertAuxiliaryToGroupCall(call);
+ if (groupCall != null) {
+ if (isGroupExpr(groupCall)) {
+ // This call is an auxiliary function that matches a group call in the
+ // GROUP BY clause.
+ //
+ // For example TUMBLE_START is an auxiliary of the TUMBLE
+ // group function, and
+ // TUMBLE_START(rowtime, INTERVAL '1' HOUR)
+ // matches
+ // TUMBLE(rowtime, INTERVAL '1' HOUR')
+ return null;
+ }
+ throw validator.newValidationError(groupCall,
+ RESOURCE.auxiliaryWithoutMatchingGroupCall(
+ call.getOperator().getName(), groupCall.getOperator().getName()));
+ }
+
+ if (call.isA(SqlKind.QUERY)) {
+ // Allow queries for now, even though they may contain
+ // references to forbidden columns.
+ return null;
+ }
+
+ // Switch to new scope.
+ SqlValidatorScope newScope = scope.getOperandScope(call);
+ scopes.push(newScope);
+
+ // Visit the operands (only expressions).
+ call.getOperator()
+ .acceptCall(this, call, true, ArgHandlerImpl.<Void>instance());
+
+ // Restore scope.
+ scopes.pop();
+ return null;
+ }
+
+}
+
+// End AggChecker.java
http://git-wip-us.apache.org/repos/asf/flink/blob/2d33c0be/flink-libraries/flink-table/src/main/java/org/apache/calcite/sql2rel/AuxiliaryConverter.java
----------------------------------------------------------------------
diff --git a/flink-libraries/flink-table/src/main/java/org/apache/calcite/sql2rel/AuxiliaryConverter.java b/flink-libraries/flink-table/src/main/java/org/apache/calcite/sql2rel/AuxiliaryConverter.java
new file mode 100644
index 0000000..98e1199
--- /dev/null
+++ b/flink-libraries/flink-table/src/main/java/org/apache/calcite/sql2rel/AuxiliaryConverter.java
@@ -0,0 +1,79 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to you under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.calcite.sql2rel;
+
+/*
+ * THIS FILE HAS BEEN COPIED FROM THE APACHE CALCITE PROJECT UNTIL CALCITE-1761 IS FIXED.
+ */
+
+import org.apache.calcite.rex.RexBuilder;
+import org.apache.calcite.rex.RexNode;
+import org.apache.calcite.sql.SqlFunction;
+import org.apache.calcite.sql.fun.SqlStdOperatorTable;
+
+/** Converts an expression for a group window function (e.g. TUMBLE)
+ * into an expression for an auxiliary group function (e.g. TUMBLE_START).
+ *
+ * @see SqlStdOperatorTable#TUMBLE
+ */
+public interface AuxiliaryConverter {
+ /** Converts an expression.
+ *
+ * @param rexBuilder Rex builder
+ * @param groupCall Call to the group function, e.g. "TUMBLE($2, 36000)"
+ * @param e Expression holding result of the group function, e.g. "$0"
+ *
+ * @return Expression for auxiliary function, e.g. "$0 + 36000" converts
+ * the result of TUMBLE to the result of TUMBLE_END
+ */
+ RexNode convert(RexBuilder rexBuilder, RexNode groupCall, RexNode e);
+
+ /** Simple implementation of {@link AuxiliaryConverter}. */
+ class Impl implements AuxiliaryConverter {
+ private final SqlFunction f;
+
+ public Impl(SqlFunction f) {
+ this.f = f;
+ }
+
+ public RexNode convert(RexBuilder rexBuilder, RexNode groupCall,
+ RexNode e) {
+ return rexBuilder.makeCall(this.f, e);
+ // FLINK QUICK FIX
+ // we do not use this logic right now
+// switch (f.getKind()) {
+// case TUMBLE_START:
+// case HOP_START:
+// case SESSION_START:
+// case SESSION_END: // TODO: ?
+// return e;
+// case TUMBLE_END:
+// return rexBuilder.makeCall(
+// SqlStdOperatorTable.PLUS, e,
+// ((RexCall) groupCall).operands.get(1));
+// case HOP_END:
+// return rexBuilder.makeCall(
+// SqlStdOperatorTable.PLUS, e,
+// ((RexCall) groupCall).operands.get(2));
+// default:
+// throw new AssertionError("unknown: " + f);
+// }
+ }
+ }
+}
+
+// End AuxiliaryConverter.java