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| author | Peter Eisentraut <peter_e@gmx.net> | 2011-02-08 23:04:18 +0200 |
|---|---|---|
| committer | Peter Eisentraut <peter_e@gmx.net> | 2011-02-08 23:04:18 +0200 |
| commit | 414c5a2ea65cbd38d79ffdf9b1fde7cc75c134e0 (patch) | |
| tree | 016efd0c7108f659ea4f3c52ea54d78e1e5449e1 /src/backend/commands/analyze.c | |
| parent | 1703f0e8da2e8e3eccb6e12879c011ba106f8a62 (diff) | |
| download | postgresql-414c5a2ea65cbd38d79ffdf9b1fde7cc75c134e0.tar.gz postgresql-414c5a2ea65cbd38d79ffdf9b1fde7cc75c134e0.zip | |
Per-column collation support
This adds collation support for columns and domains, a COLLATE clause
to override it per expression, and B-tree index support.
Peter Eisentraut
reviewed by Pavel Stehule, Itagaki Takahiro, Robert Haas, Noah Misch
Diffstat (limited to 'src/backend/commands/analyze.c')
| -rw-r--r-- | src/backend/commands/analyze.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/backend/commands/analyze.c b/src/backend/commands/analyze.c index 4c106dd8c57..bafdc80d584 100644 --- a/src/backend/commands/analyze.c +++ b/src/backend/commands/analyze.c @@ -862,11 +862,13 @@ examine_attribute(Relation onerel, int attnum, Node *index_expr) { stats->attrtypid = exprType(index_expr); stats->attrtypmod = exprTypmod(index_expr); + stats->attrcollation = exprCollation(index_expr); } else { stats->attrtypid = attr->atttypid; stats->attrtypmod = attr->atttypmod; + stats->attrcollation = attr->attcollation; } typtuple = SearchSysCache1(TYPEOID, ObjectIdGetDatum(stats->attrtypid)); @@ -1929,6 +1931,7 @@ compute_minimal_stats(VacAttrStatsP stats, track_cnt = 0; fmgr_info(mystats->eqfunc, &f_cmpeq); + fmgr_info_collation(stats->attrcollation, &f_cmpeq); for (i = 0; i < samplerows; i++) { @@ -2250,6 +2253,7 @@ compute_scalar_stats(VacAttrStatsP stats, SelectSortFunction(mystats->ltopr, false, &cmpFn, &cmpFlags); fmgr_info(cmpFn, &f_cmpfn); + fmgr_info_collation(stats->attrcollation, &f_cmpfn); /* Initial scan to find sortable values */ for (i = 0; i < samplerows; i++) |