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readfuncs.c

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    • Tom Lane's avatar
      6e077097
      Implement SQL-compliant treatment of row comparisons for < <= > >= cases · 6e077097
      Tom Lane authored
      (previously we only did = and <> correctly).  Also, allow row comparisons
      with any operators that are in btree opclasses, not only those with these
      specific names.  This gets rid of a whole lot of indefensible assumptions
      about the behavior of particular operators based on their names ... though
      it's still true that IN and NOT IN expand to "= ANY".  The patch adds a
      RowCompareExpr expression node type, and makes some changes in the
      representation of ANY/ALL/ROWCOMPARE SubLinks so that they can share code
      with RowCompareExpr.
      
      I have not yet done anything about making RowCompareExpr an indexable
      operator, but will look at that soon.
      
      initdb forced due to changes in stored rules.
      6e077097
      History
      Implement SQL-compliant treatment of row comparisons for < <= > >= cases
      Tom Lane authored
      (previously we only did = and <> correctly).  Also, allow row comparisons
      with any operators that are in btree opclasses, not only those with these
      specific names.  This gets rid of a whole lot of indefensible assumptions
      about the behavior of particular operators based on their names ... though
      it's still true that IN and NOT IN expand to "= ANY".  The patch adds a
      RowCompareExpr expression node type, and makes some changes in the
      representation of ANY/ALL/ROWCOMPARE SubLinks so that they can share code
      with RowCompareExpr.
      
      I have not yet done anything about making RowCompareExpr an indexable
      operator, but will look at that soon.
      
      initdb forced due to changes in stored rules.