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Simplify implementation of ts_debug() function --- use a join instead

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of redundant sub-selects.  initdb not forced, since this is just a
cosmetic change, but the new code won't show up till you do one.
This commit is contained in:
Tom Lane 2007-08-25 17:47:44 +00:00
parent e4a52eca35
commit 21168267b9
1 changed files with 18 additions and 30 deletions
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48
src/backend/catalog/system_views.sql
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@ -3,7 +3,7 @@
*
* Copyright (c) 1996-2007, PostgreSQL Global Development Group
*
* $PostgreSQL: pgsql/src/backend/catalog/system_views.sql,v 1.40 2007/08/21 01:11:13 tgl Exp $
* $PostgreSQL: pgsql/src/backend/catalog/system_views.sql,v 1.41 2007/08/25 17:47:44 tgl Exp $
*/
CREATE VIEW pg_roles AS
@ -394,37 +394,19 @@ CREATE TYPE ts_debug AS (
"Lexized token" text
);
COMMENT ON TYPE ts_debug IS 'returned type from ts_debug() function';
COMMENT ON TYPE ts_debug IS 'type returned from ts_debug() function';
CREATE FUNCTION ts_debug(regconfig, text)
RETURNS SETOF ts_debug AS
$$
SELECT
(
SELECT
tt.alias
FROM
pg_catalog.ts_token_type(
(SELECT cfgparser FROM pg_catalog.pg_ts_config WHERE oid = $1 )
) AS tt
WHERE
tt.tokid = parse.tokid
) AS "Alias",
(
SELECT
tt.description
FROM
pg_catalog.ts_token_type(
(SELECT cfgparser FROM pg_catalog.pg_ts_config WHERE oid = $1 )
) AS tt
WHERE
tt.tokid = parse.tokid
) AS "Description",
tt.alias AS "Alias",
tt.description AS "Description",
parse.token AS "Token",
ARRAY ( SELECT m.mapdict::pg_catalog.regdictionary
FROM pg_catalog.pg_ts_config_map AS m
WHERE m.mapcfg = $1 AND m.maptokentype = parse.tokid
ORDER BY m.mapcfg, m.maptokentype, m.mapseqno )
ORDER BY m.mapseqno )
AS "Dictionaries",
(
SELECT
@ -433,23 +415,29 @@ SELECT
( SELECT mapdict, pg_catalog.ts_lexize(mapdict, parse.token) AS lex
FROM pg_catalog.pg_ts_config_map AS m
WHERE m.mapcfg = $1 AND m.maptokentype = parse.tokid
ORDER BY m.mapcfg, m.maptokentype, m.mapseqno ) dl
ORDER BY m.mapseqno ) dl
WHERE dl.lex IS NOT NULL
LIMIT 1
) AS "Lexized token"
FROM pg_catalog.ts_parse(
(SELECT cfgparser FROM pg_catalog.pg_ts_config WHERE oid = $1 ), $2
) AS parse;
) AS parse,
pg_catalog.ts_token_type(
(SELECT cfgparser FROM pg_catalog.pg_ts_config WHERE oid = $1 )
) AS tt
WHERE tt.tokid = parse.tokid
$$
LANGUAGE SQL RETURNS NULL ON NULL INPUT;
LANGUAGE SQL STRICT STABLE;
COMMENT ON FUNCTION ts_debug(regconfig,text) IS 'debug function for text search configuration';
COMMENT ON FUNCTION ts_debug(regconfig,text) IS
'debug function for text search configuration';
CREATE FUNCTION ts_debug(text)
RETURNS SETOF ts_debug AS
$$
SELECT * FROM pg_catalog.ts_debug( pg_catalog.get_current_ts_config(), $1 );
SELECT * FROM pg_catalog.ts_debug( pg_catalog.get_current_ts_config(), $1);
$$
LANGUAGE SQL RETURNS NULL ON NULL INPUT;
LANGUAGE SQL STRICT STABLE;
COMMENT ON FUNCTION ts_debug(text) IS 'debug function for current text search configuration';
COMMENT ON FUNCTION ts_debug(text) IS
'debug function for current text search configuration';