diff options
| author | Alexander Korotkov | 2020-03-30 16:17:11 +0000 |
|---|---|---|
| committer | Alexander Korotkov | 2020-03-30 16:17:23 +0000 |
| commit | 911e70207703799605f5a0e8aad9f06cff067c63 (patch) | |
| tree | 5cdbffea1945c2c0b766db195a55bcb372d60537 /src/tools/pgindent | |
| parent | 1d53432ff940b789c2431ba476a2a6e2db3edf84 (diff) | |
Implement operator class parameters
PostgreSQL provides set of template index access methods, where opclasses have
much freedom in the semantics of indexing. These index AMs are GiST, GIN,
SP-GiST and BRIN. There opclasses define representation of keys, operations on
them and supported search strategies. So, it's natural that opclasses may be
faced some tradeoffs, which require user-side decision. This commit implements
opclass parameters allowing users to set some values, which tell opclass how to
index the particular dataset.
This commit doesn't introduce new storage in system catalog. Instead it uses
pg_attribute.attoptions, which is used for table column storage options but
unused for index attributes.
In order to evade changing signature of each opclass support function, we
implement unified way to pass options to opclass support functions. Options
are set to fn_expr as the constant bytea expression. It's possible due to the
fact that opclass support functions are executed outside of expressions, so
fn_expr is unused for them.
This commit comes with some examples of opclass options usage. We parametrize
signature length in GiST. That applies to multiple opclasses: tsvector_ops,
gist__intbig_ops, gist_ltree_ops, gist__ltree_ops, gist_trgm_ops and
gist_hstore_ops. Also we parametrize maximum number of integer ranges for
gist__int_ops. However, the main future usage of this feature is expected
to be json, where users would be able to specify which way to index particular
json parts.
Catversion is bumped.
Discussion: https://postgr.es/m/d22c3a18-31c7-1879-fc11-4c1ce2f5e5af%40postgrespro.ru
Author: Nikita Glukhov, revised by me
Reviwed-by: Nikolay Shaplov, Robert Haas, Tom Lane, Tomas Vondra, Alvaro Herrera
Diffstat (limited to 'src/tools/pgindent')
| -rw-r--r-- | src/tools/pgindent/typedefs.list | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/tools/pgindent/typedefs.list b/src/tools/pgindent/typedefs.list index ccc34ee2ac6..587b040532a 100644 --- a/src/tools/pgindent/typedefs.list +++ b/src/tools/pgindent/typedefs.list @@ -841,6 +841,8 @@ GISTBuildState GISTENTRY GISTInsertStack GISTInsertState +GISTIntArrayBigOptions +GISTIntArrayOptions GISTNodeBuffer GISTNodeBufferPage GISTPageOpaque @@ -908,11 +910,13 @@ GinVacuumState GistBufferingMode GistBulkDeleteResult GistEntryVector +GistHstoreOptions GistInetKey GistNSN GistOptBufferingMode GistSplitUnion GistSplitVector +GistTsVectorOptions GistVacState GlobalTransaction GrantRoleStmt @@ -1303,6 +1307,8 @@ LogicalRepWorkerId LogicalRewriteMappingData LogicalTape LogicalTapeSet +LtreeGistOptions +LtreeSignature MAGIC MBuf MCVItem @@ -2477,6 +2483,7 @@ TrgmArcInfo TrgmBound TrgmColor TrgmColorInfo +TrgmGistOptions TrgmNFA TrgmPackArcInfo TrgmPackedArc @@ -2875,6 +2882,7 @@ file_action_t file_entry_t file_type_t filemap_t +fill_string_relopt finalize_primnode_context find_dependent_phvs_context find_expr_references_context @@ -2998,6 +3006,8 @@ leaf_item line_t lineno_t list_qsort_comparator +local_relopt +local_relopts locale_t locate_agg_of_level_context locate_var_of_level_context @@ -3196,6 +3206,7 @@ relopt_real relopt_string relopt_type relopt_value +relopts_validator remoteConn remoteConnHashEnt remoteDep |