[jira] [Created] (CALCITE-2947) Type mismatch assertion error when converting NOT IN subquery

[Haisheng Yuan (JIRA)]

Haisheng Yuan created CALCITE-2947:
--------------------------------------

             Summary: Type mismatch assertion error when converting NOT IN 
subquery
                 Key: CALCITE-2947
                 URL: https://issues.apache.org/jira/browse/CALCITE-2947
             Project: Calcite
          Issue Type: Bug
          Components: core
            Reporter: Haisheng Yuan


Repro:
Add the following test to SqlToRelConverterTest.java.

{code:java}
@Test public void testSubQueryNotIN() {
    final String sql = "select deptno\n"
        + "from EMP e\n"
        + "where deptno not in (select deptno\n"
        + "from EMP where empno=e.empno)";
    sql(sql).ok();
  }
{code}

Error:
{code:java}
java.lang.AssertionError: type mismatch:
ref:
INTEGER NOT NULL
input:
INTEGER

        at org.apache.calcite.util.Litmus$1.fail(Litmus.java:31)
        at org.apache.calcite.plan.RelOptUtil.eq(RelOptUtil.java:1832)
        at org.apache.calcite.rex.RexChecker.visitInputRef(RexChecker.java:125)
        at org.apache.calcite.rex.RexChecker.visitInputRef(RexChecker.java:57)
        at org.apache.calcite.rex.RexInputRef.accept(RexInputRef.java:112)
        at org.apache.calcite.rex.RexChecker.visitCall(RexChecker.java:140)
        at org.apache.calcite.rex.RexChecker.visitCall(RexChecker.java:57)
        at org.apache.calcite.rex.RexCall.accept(RexCall.java:191)
        at org.apache.calcite.rel.core.Filter.isValid(Filter.java:120)
        at 
org.apache.calcite.rel.logical.LogicalFilter.<init>(LogicalFilter.java:70)
        at 
org.apache.calcite.rel.logical.LogicalFilter.create(LogicalFilter.java:114)
        at 
org.apache.calcite.rel.logical.LogicalFilter.create(LogicalFilter.java:101)
        at 
org.apache.calcite.rel.core.RelFactories$FilterFactoryImpl.createFilter(RelFactories.java:300)
        at 
org.apache.calcite.sql2rel.SqlToRelConverter.createJoin(SqlToRelConverter.java:2433)
{code}

If we change not in subquery to in subquery, it can run without error.




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