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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2005-12-28 01:30:02 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2005-12-28 01:30:02 +0000 |
| commit | 6e07709760a29d8dbfb93b9846c905bd40689082 (patch) | |
| tree | 9bf0084587d7e313ba087ce53c24bc748c63a456 /src/tutorial/basics.source | |
| parent | a37422e042a6114ab0e513f50dac4a47fab22313 (diff) | |
| download | postgresql-6e07709760a29d8dbfb93b9846c905bd40689082.tar.gz postgresql-6e07709760a29d8dbfb93b9846c905bd40689082.zip | |
Implement SQL-compliant treatment of row comparisons for < <= > >= cases
(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.
Diffstat (limited to 'src/tutorial/basics.source')
0 files changed, 0 insertions, 0 deletions