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Fix information_schema.key_column_usage to show correct value of

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position_in_unique_constraint (column newly added per SQL2003).
Greg Mullane
This commit is contained in:
Tom Lane 2006-09-04 23:13:01 +00:00
parent 5a248cd2e4
commit 44839ac03e
1 changed files with 12 additions and 5 deletions
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17
src/backend/catalog/information_schema.sql
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@ -4,7 +4,7 @@
* *
* Copyright (c) 2003-2006, PostgreSQL Global Development Group * Copyright (c) 2003-2006, PostgreSQL Global Development Group
* *
* $PostgreSQL: pgsql/src/backend/catalog/information_schema.sql,v 1.34 2006/09/04 21:03:18 momjian Exp $ * $PostgreSQL: pgsql/src/backend/catalog/information_schema.sql,v 1.35 2006/09/04 23:13:01 tgl Exp $
*/ */
/* /*
@ -921,11 +921,18 @@ CREATE VIEW key_column_usage AS
CAST(relname AS sql_identifier) AS table_name, CAST(relname AS sql_identifier) AS table_name,
CAST(a.attname AS sql_identifier) AS column_name, CAST(a.attname AS sql_identifier) AS column_name,
CAST((ss.x).n AS cardinal_number) AS ordinal_position, CAST((ss.x).n AS cardinal_number) AS ordinal_position,
CAST(null AS cardinal_number) AS position_in_unique_constraint -- FIXME (
SELECT CAST(a AS cardinal_number)
FROM pg_constraint,
(SELECT a FROM generate_series(1, array_upper(ss.confkey,1)) a) AS foo
WHERE conrelid = ss.confrelid
AND conkey[foo.a] = ss.confkey[(ss.x).n]
) AS position_in_unique_constraint
FROM pg_attribute a, FROM pg_attribute a,
(SELECT r.oid, nc.nspname AS nc_nspname, c.conname, (SELECT r.oid, r.relname, nc.nspname AS nc_nspname,
nr.nspname AS nr_nspname, r.relname, nr.nspname AS nr_nspname,
_pg_expandarray(c.conkey) AS x c.conname, c.confkey, c.confrelid,
_pg_expandarray(c.conkey) AS x
FROM pg_namespace nr, pg_class r, pg_namespace nc, FROM pg_namespace nr, pg_class r, pg_namespace nc,
pg_constraint c pg_constraint c
WHERE nr.oid = r.relnamespace WHERE nr.oid = r.relnamespace