[jira] [Created] (FLINK-20539) Type mismatch when using ROW in computed column

["Timo Walther (Jira)" <ji...@apache.org>]

Timo Walther created FLINK-20539:
------------------------------------

             Summary: Type mismatch when using ROW in computed column
                 Key: FLINK-20539
                 URL: https://issues.apache.org/jira/browse/FLINK-20539
             Project: Flink
          Issue Type: Sub-task
          Components: Table SQL / Planner
            Reporter: Timo Walther
            Assignee: Timo Walther


The following SQL:
{code}
env.executeSql(
	"CREATE TABLE Orders (\n"
	+ "    order_number BIGINT,\n"
	+ "    price        INT,\n"
	+ "    first_name   STRING,\n"
	+ "    last_name    STRING,\n"
	+ "    buyer_name AS ROW(first_name, last_name)\n"
	+ ") WITH (\n"
	+ "  'connector' = 'datagen'\n"
	+ ")");

env.executeSql("SELECT * FROM Orders").print();
{code}

Fails with:
{code}
Exception in thread "main" java.lang.AssertionError: Conversion to relational algebra failed to preserve datatypes:
validated type:
RecordType(BIGINT order_number, INTEGER price, VARCHAR(2147483647) CHARACTER SET "UTF-16LE" first_name, VARCHAR(2147483647) CHARACTER SET "UTF-16LE" last_name, RecordType:peek_no_expand(VARCHAR(2147483647) CHARACTER SET "UTF-16LE" EXPR$0, VARCHAR(2147483647) CHARACTER SET "UTF-16LE" EXPR$1) NOT NULL buyer_name) NOT NULL
converted type:
RecordType(BIGINT order_number, INTEGER price, VARCHAR(2147483647) CHARACTER SET "UTF-16LE" first_name, VARCHAR(2147483647) CHARACTER SET "UTF-16LE" last_name, RecordType(VARCHAR(2147483647) CHARACTER SET "UTF-16LE" EXPR$0, VARCHAR(2147483647) CHARACTER SET "UTF-16LE" EXPR$1) NOT NULL buyer_name) NOT NULL
rel:
LogicalProject(order_number=[$0], price=[$1], first_name=[$2], last_name=[$3], buyer_name=[ROW($2, $3)])
  LogicalTableScan(table=[[default_catalog, default_database, Orders]])

	at org.apache.calcite.sql2rel.SqlToRelConverter.checkConvertedType(SqlToRelConverter.java:467)
	at org.apache.calcite.sql2rel.SqlToRelConverter.convertQuery(SqlToRelConverter.java:582)
{code}



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