[CALCITE-2893] Type mismatch assertion error when creating join condition

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.20.0
• Component/s: core
• Assignee: Unassigned
• Reporter: Haisheng Yuan
• Created: 06/Mar/19 05:38
• Updated: 24/Jun/19 15:02
• Resolved: 02/Apr/19 15:42

Description

Repro:
in TableFunctionTest.java, add the following test case:

@Test public void testValuesLateralJoin() {
    final String q1 = "select *\n"
        + "from (values 4) as t (c)\n"
        + "left join lateral table(\"s\".\"fibonacci2\"(c)) as R(n) on c=n";
      with()
          .with(CalciteConnectionProperty.CONFORMANCE,
              SqlConformanceEnum.LENIENT)
          .query(q1)
          .returnsUnordered("C=4; N=null");
  }

Error message:

java.lang.AssertionError: type mismatch:
ref:
BIGINT NOT NULL
input:
BIGINT

	at org.apache.calcite.util.Litmus$1.fail(Litmus.java:31)
	at org.apache.calcite.plan.RelOptUtil.eq(RelOptUtil.java:1832)
	at org.apache.calcite.rex.RexChecker.visitInputRef(RexChecker.java:125)
	at org.apache.calcite.rex.RexChecker.visitInputRef(RexChecker.java:57)
	at org.apache.calcite.rex.RexInputRef.accept(RexInputRef.java:112)
	at org.apache.calcite.rex.RexChecker.visitCall(RexChecker.java:140)
	at org.apache.calcite.rex.RexChecker.visitCall(RexChecker.java:57)
	at org.apache.calcite.rex.RexCall.accept(RexCall.java:190)
	at org.apache.calcite.rel.core.Filter.isValid(Filter.java:120)
	at org.apache.calcite.rel.logical.LogicalFilter.<init>(LogicalFilter.java:70)
	at org.apache.calcite.rel.logical.LogicalFilter.create(LogicalFilter.java:114)
	at org.apache.calcite.rel.logical.LogicalFilter.create(LogicalFilter.java:101)
	at org.apache.calcite.rel.core.RelFactories$FilterFactoryImpl.createFilter(RelFactories.java:295)
	at org.apache.calcite.sql2rel.SqlToRelConverter.createJoin(SqlToRelConverter.java:2413)
	at org.apache.calcite.sql2rel.SqlToRelConverter.convertFrom(SqlToRelConverter.java:2065)
	at org.apache.calcite.sql2rel.SqlToRelConverter.convertSelectImpl(SqlToRelConverter.java:644)
	at org.apache.calcite.sql2rel.SqlToRelConverter.convertSelect(SqlToRelConverter.java:625)
	at org.apache.calcite.sql2rel.SqlToRelConverter.convertQueryRecursive(SqlToRelConverter.java:3080)
	at org.apache.calcite.sql2rel.SqlToRelConverter.convertQuery(SqlToRelConverter.java:561)

Even literal is definitely not null, we should still be able to compare the two.

Issue Links

• is blocked by: CALCITE-2004 The TableFunction left outer join was improperly translated