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  1. Derby
  2. DERBY-2457

Use of column aliases in group by / having clauses can cause queries to fail

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Details

    • Improvement
    • Status: Closed
    • Minor
    • Resolution: Won't Fix
    • 10.3.1.4
    • None
    • SQL
    • None

    Description

      Some use of column aliases in group by / having clauses can cause queries to fail with error 42X04. The queries can sometimes be made to work by also aliasing the table or rewriting the query to use a subselect. Attached is a simple sql script which reproduces the issue, originally found as part of DERBY-1624.

      Attachments

        1. additionalTests.diff
          6 kB
          Bryan Pendleton
        2. 1624_repro.sql
          2 kB
          Samuel Andrew McIntyre

        Issue Links

          is blocked by

          Bug - A problem which impairs or prevents the functions of the product. DERBY-3094 Grouping of expressions causes NullPointerException

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed
          is related to

          Improvement - An improvement or enhancement to an existing feature or task. DERBY-1624 use of direct column name rather than alias make aggregation fail (Hibernate depends on that)

          • Major - Major loss of function.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. DERBY-84 Column aliasing could simplify queries

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Closed

          Activity

            People

              bryanpendleton Bryan Pendleton
              fuzzylogic Samuel Andrew McIntyre
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              Dates

                Created:
                Updated:
                Resolved: