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Commit2116826

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Simplify implementation of ts_debug() function --- use a join instead
of redundant sub-selects. initdb not forced, since this is just acosmetic change, but the new code won't show up till you do one.
1 parente4a52ec commit2116826

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1 file changed

+18
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‎src/backend/catalog/system_views.sql‎

Lines changed: 18 additions & 30 deletions
Original file line numberDiff line numberDiff line change
@@ -3,7 +3,7 @@
33
*
44
* Copyright (c) 1996-2007, PostgreSQL Global Development Group
55
*
6-
* $PostgreSQL: pgsql/src/backend/catalog/system_views.sql,v 1.40 2007/08/21 01:11:13 tgl Exp $
6+
* $PostgreSQL: pgsql/src/backend/catalog/system_views.sql,v 1.41 2007/08/25 17:47:44 tgl Exp $
77
*/
88

99
CREATEVIEWpg_rolesAS
@@ -394,37 +394,19 @@ CREATE TYPE ts_debug AS (
394394
"Lexized token"text
395395
);
396396

397-
COMMENT ON TYPE ts_debug IS'returnedtype from ts_debug() function';
397+
COMMENT ON TYPE ts_debug IS'type returned from ts_debug() function';
398398

399399
CREATEFUNCTIONts_debug(regconfig,text)
400400
RETURNS SETOF ts_debugAS
401401
$$
402402
SELECT
403-
(
404-
SELECT
405-
tt.alias
406-
FROM
407-
pg_catalog.ts_token_type(
408-
(SELECT cfgparserFROMpg_catalog.pg_ts_configWHEREoid= $1 )
409-
)AS tt
410-
WHERE
411-
tt.tokid=parse.tokid
412-
)AS"Alias",
413-
(
414-
SELECT
415-
tt.description
416-
FROM
417-
pg_catalog.ts_token_type(
418-
(SELECT cfgparserFROMpg_catalog.pg_ts_configWHEREoid= $1 )
419-
)AS tt
420-
WHERE
421-
tt.tokid=parse.tokid
422-
)AS"Description",
403+
tt.aliasAS"Alias",
404+
tt.descriptionAS"Description",
423405
parse.tokenAS"Token",
424406
ARRAY (SELECTm.mapdict::pg_catalog.regdictionary
425407
FROMpg_catalog.pg_ts_config_mapAS m
426408
WHEREm.mapcfg= $1ANDm.maptokentype=parse.tokid
427-
ORDER BYm.mapcfg,m.maptokentype,m.mapseqno )
409+
ORDER BYm.mapseqno )
428410
AS"Dictionaries",
429411
(
430412
SELECT
@@ -433,23 +415,29 @@ SELECT
433415
(SELECT mapdict,pg_catalog.ts_lexize(mapdict,parse.token)AS lex
434416
FROMpg_catalog.pg_ts_config_mapAS m
435417
WHEREm.mapcfg= $1ANDm.maptokentype=parse.tokid
436-
ORDER BYm.mapcfg,m.maptokentype,m.mapseqno ) dl
418+
ORDER BYm.mapseqno ) dl
437419
WHEREdl.lexIS NOT NULL
438420
LIMIT1
439421
)AS"Lexized token"
440422
FROMpg_catalog.ts_parse(
441423
(SELECT cfgparserFROMpg_catalog.pg_ts_configWHEREoid= $1 ), $2
442-
)AS parse;
424+
)AS parse,
425+
pg_catalog.ts_token_type(
426+
(SELECT cfgparserFROMpg_catalog.pg_ts_configWHEREoid= $1 )
427+
)AS tt
428+
WHEREtt.tokid=parse.tokid
443429
$$
444-
LANGUAGE SQLRETURNSNULLONNULL INPUT;
430+
LANGUAGE SQLSTRICT STABLE;
445431

446-
COMMENT ON FUNCTION ts_debug(regconfig,text) IS'debug function for text search configuration';
432+
COMMENT ON FUNCTION ts_debug(regconfig,text) IS
433+
'debug function for text search configuration';
447434

448435
CREATEFUNCTIONts_debug(text)
449436
RETURNS SETOF ts_debugAS
450437
$$
451-
SELECT*FROMpg_catalog.ts_debug(pg_catalog.get_current_ts_config(), $1);
438+
SELECT*FROMpg_catalog.ts_debug(pg_catalog.get_current_ts_config(), $1);
452439
$$
453-
LANGUAGE SQLRETURNSNULLONNULL INPUT;
440+
LANGUAGE SQLSTRICT STABLE;
454441

455-
COMMENT ON FUNCTION ts_debug(text) IS'debug function for current text search configuration';
442+
COMMENT ON FUNCTION ts_debug(text) IS
443+
'debug function for current text search configuration';

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