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  1. IMPALA
  2. IMPALA-5100 add run time scalar subquery check
  3. IMPALA-8954

Support uncorrelated subqueries in the select list

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    • ghx-label-12

    Description

      [localhost:21000] default> select 'foo', (select 'bar');
      Query: select 'foo', (select 'bar')
      Query submitted at: 2019-09-18 13:44:43 (Coordinator: http://tarmstrong-box:25000)
      ERROR: AnalysisException: Subqueries are not supported in the select list.
      

      I think we can support these, implemented as a nested loop join with a cardinality check node if needed.

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            superdupershant Shant Hovsepian
            tarmstrong Tim Armstrong
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