You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@calcite.apache.org by "Leonid Chistov (Jira)" <ji...@apache.org> on 2022/11/21 10:23:00 UTC
[jira] [Created] (CALCITE-5395) RelToSql converter fails when SELECT * is under a semi-join node
Leonid Chistov created CALCITE-5395:
---------------------------------------
Summary: RelToSql converter fails when SELECT * is under a semi-join node
Key: CALCITE-5395
URL: https://issues.apache.org/jira/browse/CALCITE-5395
Project: Calcite
Issue Type: Bug
Affects Versions: 1.32.0
Reporter: Leonid Chistov
The following test case would fail if added to RelToSqlConverterTest.java:
{code:java}
@Test void testUnionUnderSemiJoinNode() {
final RelBuilder builder = relBuilder();
final RelNode base = builder
.scan("EMP")
.scan("EMP")
.union(true)
.build();
final RelNode root = builder
.push(base)
.scan("DEPT")
.join(
JoinRelType.SEMI, builder.equals(
builder.field(2, 1, "DEPTNO"),
builder.field(2, 0, "DEPTNO")))
.project(builder.field("DEPTNO"))
.build();
toSql(root);
} {code}
The exception is:
{code:java}
Index 7 out of bounds for length 1
java.lang.IndexOutOfBoundsException: Index 7 out of bounds for length 1
at java.base/jdk.internal.util.Preconditions.outOfBounds(Preconditions.java:64)
at java.base/jdk.internal.util.Preconditions.outOfBoundsCheckIndex(Preconditions.java:70)
at java.base/jdk.internal.util.Preconditions.checkIndex(Preconditions.java:266)
at java.base/java.util.Objects.checkIndex(Objects.java:359)
at java.base/java.util.ArrayList.get(ArrayList.java:427)
at org.apache.calcite.sql.SqlNodeList.get(SqlNodeList.java:160)
at org.apache.calcite.rel.rel2sql.RelToSqlConverter$AliasReplacementShuttle.visit(RelToSqlConverter.java:197)
at org.apache.calcite.rel.rel2sql.RelToSqlConverter$AliasReplacementShuttle.visit(RelToSqlConverter.java:179)
at org.apache.calcite.sql.SqlIdentifier.accept(SqlIdentifier.java:324)
at org.apache.calcite.sql.util.SqlShuttle$CallCopyingArgHandler.visitChild(SqlShuttle.java:134)
at org.apache.calcite.sql.util.SqlShuttle$CallCopyingArgHandler.visitChild(SqlShuttle.java:101)
at org.apache.calcite.sql.SqlOperator.acceptCall(SqlOperator.java:954)
at org.apache.calcite.sql.util.SqlShuttle.visit(SqlShuttle.java:68)
at org.apache.calcite.sql.util.SqlShuttle.visit(SqlShuttle.java:41)
at org.apache.calcite.sql.SqlCall.accept(SqlCall.java:161)
at org.apache.calcite.rel.rel2sql.RelToSqlConverter.visitAntiOrSemiJoin(RelToSqlConverter.java:261) {code}
What happens is that `AliasReplacementShuttle` expects a select list as a source of replacement, but cannot handle a case when select node has a `select *` form.
In case of current test, `union` is transformed to `select *` form before semi-join handling occurs.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)