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https://issues.apache.org/jira/browse/CALCITE-5395?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated CALCITE-5395:
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Labels: pull-request-available (was: )
> 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
> Priority: Minor
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> 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.
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