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  1. Calcite
  2. CALCITE-340

Optiq IllegalArgumentException when push complex expressions into join conditions.

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.9.0-incubating
    • Component/s: None
    • Labels:
      None

      Description

      Optiq SqlToRelConverter will throw IllegalArgumentException, when join conditions in the on clause contains a complex expression, in stead of a single column. For example ( the query itself is not a meaningful one).

      select e."deptno", d."deptno"
      from "hr"."emps" as e
      join "hr"."depts" as d
      on ( e."deptno" + 1 - 1 = d."deptno" + 2 - 2 and
      e."deptno" + 10 - 10 = d."deptno" + 20 - 20 )

      Optiq is trying to create projects for complex expression on both sides of join operator, and push project past the join operator.

      Join (#1 = # 4 and #2 = #5)
      / \
      Proj ( deptno, deptno+1-1, deptno +10-10) Proj ( deptno, deptno+2-1, deptno +20-20)

      However, in SqlRelConverter:pushDownJoinConditions(), the index for the new created expressions are not maintained properly, which lead to the IllegalArgumentException.

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            • Assignee:
              julianhyde Julian Hyde
              Reporter:
              jni Jinfeng Ni
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              • Created:
                Updated:
                Resolved: