[jira] [Created] (IMPALA-7868) Move UPDATE-only fields from ModifyStmt to UpdateStmt

["Paul Rogers (JIRA)" <ji...@apache.org>]

Paul Rogers created IMPALA-7868:
-----------------------------------

             Summary: Move UPDATE-only fields from ModifyStmt to UpdateStmt
                 Key: IMPALA-7868
                 URL: https://issues.apache.org/jira/browse/IMPALA-7868
             Project: IMPALA
          Issue Type: Improvement
          Components: Frontend
    Affects Versions: Impala 3.0
            Reporter: Paul Rogers
            Assignee: Paul Rogers


A subset of the FE parse node hierarchy:

{noformat}
ParseNode
|- StatementBase
   |- ModifyStmt
      |- DeleteStmt
      |- UpdateStmt
{noformat}

The {{ModifyStmt}} holds a number of members that are used only by the {{UpdateStmt}}, but which make no sense fr the {{DeleteStmt}}.

This ticket asks to rationalize the class structure, moving {{UPDATE}}-only fields to the {{UpdateStmt}} class.



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