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| author | Heikki Linnakangas <heikki.linnakangas@iki.fi> | 2021-04-07 13:22:05 +0300 |
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| committer | Heikki Linnakangas <heikki.linnakangas@iki.fi> | 2021-04-07 13:22:05 +0300 |
| commit | 9f984ba6d23dc6eecebf479ab1d3f2e550a4e9be (patch) | |
| tree | 1ec0fd0b4721f3c89960a2a0699cc398e6a659b3 /contrib/btree_gist/btree_ts.c | |
| parent | dd13ad9d39a1ba41cf329b6fe408b49be57c7b88 (diff) | |
| download | postgresql-9f984ba6d23dc6eecebf479ab1d3f2e550a4e9be.tar.gz postgresql-9f984ba6d23dc6eecebf479ab1d3f2e550a4e9be.zip | |
Add sortsupport for gist_btree opclasses, for faster index builds.
Commit 16fa9b2b30 introduced a faster way to build GiST indexes, by
sorting all the data. This commit adds the sortsupport functions needed
to make use of that feature for btree_gist.
Author: Andrey Borodin
Discussion: https://www.postgresql.org/message-id/2F3F7265-0D22-44DB-AD71-8554C743D943@yandex-team.ru
Diffstat (limited to 'contrib/btree_gist/btree_ts.c')
| -rw-r--r-- | contrib/btree_gist/btree_ts.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/contrib/btree_gist/btree_ts.c b/contrib/btree_gist/btree_ts.c index 2671ba961cd..c6ef0782d24 100644 --- a/contrib/btree_gist/btree_ts.c +++ b/contrib/btree_gist/btree_ts.c @@ -31,6 +31,7 @@ PG_FUNCTION_INFO_V1(gbt_tstz_consistent); PG_FUNCTION_INFO_V1(gbt_tstz_distance); PG_FUNCTION_INFO_V1(gbt_ts_penalty); PG_FUNCTION_INFO_V1(gbt_ts_same); +PG_FUNCTION_INFO_V1(gbt_ts_sortsupport); #ifdef USE_FLOAT8_BYVAL @@ -399,3 +400,29 @@ gbt_ts_same(PG_FUNCTION_ARGS) *result = gbt_num_same((void *) b1, (void *) b2, &tinfo, fcinfo->flinfo); PG_RETURN_POINTER(result); } + +static int +gbt_ts_sort_build_cmp(Datum a, Datum b, SortSupport ssup) +{ + tsKEY *ia = (tsKEY *) DatumGetPointer(a); + tsKEY *ib = (tsKEY *) DatumGetPointer(b); + + return DatumGetInt32(DirectFunctionCall2(timestamp_cmp, + TimestampGetDatumFast(ia->lower), + TimestampGetDatumFast(ib->lower))); +} + +/* + * Sort support routine for fast GiST index build by sorting. + */ +Datum +gbt_ts_sortsupport(PG_FUNCTION_ARGS) +{ + SortSupport ssup = (SortSupport) PG_GETARG_POINTER(0); + + ssup->comparator = gbt_ts_sort_build_cmp; + ssup->abbrev_converter = NULL; + ssup->abbrev_abort = NULL; + ssup->abbrev_full_comparator = NULL; + PG_RETURN_VOID(); +} |