diff options
| author | Alexander Korotkov | 2018-09-18 22:54:10 +0000 |
|---|---|---|
| committer | Alexander Korotkov | 2018-09-18 22:54:10 +0000 |
| commit | 2a6368343ff43743ddd90d0f4c2d0ac03e18aa85 (patch) | |
| tree | cfe7805a40c662e0962965aa1f263ec44e6d1eff /src/include/utils/lsyscache.h | |
| parent | d0cfc3d6a44af1756ca5be8cb2414da7b8bf20d5 (diff) | |
Add support for nearest-neighbor (KNN) searches to SP-GiST
Currently, KNN searches were supported only by GiST. SP-GiST also capable to
support them. This commit implements that support. SP-GiST scan stack is
replaced with queue, which serves as stack if no ordering is specified. KNN
support is provided for three SP-GIST opclasses: quad_point_ops, kd_point_ops
and poly_ops (catversion is bumped). Some common parts between GiST and SP-GiST
KNNs are extracted into separate functions.
Discussion: https://postgr.es/m/570825e8-47d0-4732-2bf6-88d67d2d51c8%40postgrespro.ru
Author: Nikita Glukhov, Alexander Korotkov based on GSoC work by Vlad Sterzhanov
Review: Andrey Borodin, Alexander Korotkov
Diffstat (limited to 'src/include/utils/lsyscache.h')
| -rw-r--r-- | src/include/utils/lsyscache.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/include/utils/lsyscache.h b/src/include/utils/lsyscache.h index e55ea4035b8..e0eea2a0dc5 100644 --- a/src/include/utils/lsyscache.h +++ b/src/include/utils/lsyscache.h @@ -95,6 +95,8 @@ extern char *get_constraint_name(Oid conoid); extern char *get_language_name(Oid langoid, bool missing_ok); extern Oid get_opclass_family(Oid opclass); extern Oid get_opclass_input_type(Oid opclass); +extern bool get_opclass_opfamily_and_input_type(Oid opclass, + Oid *opfamily, Oid *opcintype); extern RegProcedure get_opcode(Oid opno); extern char *get_opname(Oid opno); extern Oid get_op_rettype(Oid opno); @@ -176,6 +178,7 @@ extern void free_attstatsslot(AttStatsSlot *sslot); extern char *get_namespace_name(Oid nspid); extern char *get_namespace_name_or_temp(Oid nspid); extern Oid get_range_subtype(Oid rangeOid); +extern Oid get_index_column_opclass(Oid index_oid, int attno); #define type_is_array(typid) (get_element_type(typid) != InvalidOid) /* type_is_array_domain accepts both plain arrays and domains over arrays */ |