git.postgresql.org Git - postgresql.git/commitdiff

diff --git a/doc/src/sgml/information_schema.sgml b/doc/src/sgml/information_schema.sgml

index c4b619e4e594c4604be460fb97f78acc65a679c3..cd1ecdd40a7d77f8c63d43e520e97cc7be772f68 100644 (file)

--- a/doc/src/sgml/information_schema.sgml

+++ b/doc/src/sgml/information_schema.sgml

-<!-- $Header: /cvsroot/pgsql/doc/src/sgml/information_schema.sgml,v 1.9 2003年09月20日 20:12:05 tgl Exp $ -->

+<!-- $Header: /cvsroot/pgsql/doc/src/sgml/information_schema.sgml,v 1.10 2003年10月16日 23:46:17 petere Exp $ -->

<chapter id="information-schema">

<title>The Information Schema</title>

<entry>

Update rule of the foreign key constraint:

<literal>CASCADE</literal>, <literal>SET NULL</literal>,

- <literal>SET DEFAULT</literal>, <literal>RESTRICT</literal>,or

+ <literal>SET DEFAULT</literal>, <literal>RESTRICT</literal>,or

<literal>NO ACTION</literal>.

</entry>

</row>

<entry>

Delete rule of the foreign key constraint:

<literal>CASCADE</literal>, <literal>SET NULL</literal>,

- <literal>SET DEFAULT</literal>, <literal>RESTRICT</literal>,or

+ <literal>SET DEFAULT</literal>, <literal>RESTRICT</literal>,or

<literal>NO ACTION</literal>.

</entry>

</row>

diff --git a/src/backend/catalog/information_schema.sql b/src/backend/catalog/information_schema.sql

index 19acb61757d9d3b1d915f0ea55dad86598de91de..0b7817e4d1525a004d8b0a4ff7a8977c54be25c9 100644 (file)

--- a/src/backend/catalog/information_schema.sql

+++ b/src/backend/catalog/information_schema.sql

*

* Copyright 2003, PostgreSQL Global Development Group

*

- * $Id: information_schema.sql,v 1.12 2003年06月29日 15:14:41 petere Exp $

+ * $Id: information_schema.sql,v 1.13 2003年10月16日 23:46:17 petere Exp $

*/

/*

* REFERENTIAL_CONSTRAINTS view

*/

+CREATE FUNCTION _pg_keyissubset(smallint[], smallint[]) RETURNS boolean

+ LANGUAGE sql

+ IMMUTABLE

+ RETURNS NULL ON NULL INPUT

+ AS 'select 1ドル[1] is null or (1ドル[1] = any (2ドル) and coalesce(_pg_keyissubset(1ドル[2:array_upper(1,1ドル)], 2ドル), true))';

+

+CREATE FUNCTION _pg_keysequal(smallint[], smallint[]) RETURNS boolean

+ LANGUAGE sql

+ IMMUTABLE

+ RETURNS NULL ON NULL INPUT

+ AS 'select _pg_keyissubset(1,ドル 2ドル) and _pg_keyissubset(2,ドル 1ドル)';

+

CREATE VIEW referential_constraints AS

SELECT CAST(current_database() AS sql_identifier) AS constraint_catalog,

CAST(ncon.nspname AS sql_identifier) AS constraint_schema,

CAST(con.conname AS sql_identifier) AS constraint_name,

- CAST(current_database() AS sql_identifier) AS unique_constraint_catalog,

+ CAST(

+ CASE WHEN npkc.nspname IS NULL THEN NULL

+ ELSE current_database() END

+ AS sql_identifier) AS unique_constraint_catalog,

CAST(npkc.nspname AS sql_identifier) AS unique_constraint_schema,

CAST(pkc.conname AS sql_identifier) AS unique_constraint_name,

WHEN 'n' THEN 'SET NULL'

WHEN 'd' THEN 'SET DEFAULT'

WHEN 'r' THEN 'RESTRICT'

- WHEN 'a' THEN 'NOACTION' END

+ WHEN 'a' THEN 'NOACTION' END

AS character_data) AS update_rule,

CAST(

WHEN 'n' THEN 'SET NULL'

WHEN 'd' THEN 'SET DEFAULT'

WHEN 'r' THEN 'RESTRICT'

- WHEN 'a' THEN 'NOACTION' END

+ WHEN 'a' THEN 'NOACTION' END

AS character_data) AS delete_rule

- FROM pg_namespace ncon,

- pg_constraint con,

- pg_class c,

- pg_constraint pkc,

- pg_namespace npkc,

- pg_user u

+ FROM (pg_namespace ncon INNER JOIN pg_constraint con ON ncon.oid = con.connamespace

+ INNER JOIN pg_class c ON con.conrelid = c.oid

+ INNER JOIN pg_user u ON c.relowner = u.usesysid)

+ LEFT JOIN

+ (pg_constraint pkc INNER JOIN pg_namespace npkc ON pkc.connamespace = npkc.oid)

+ ON con.confrelid = pkc.conrelid AND _pg_keysequal(con.confkey, pkc.conkey)

- WHERE ncon.oid = con.connamespace

- AND con.conrelid = c.oid

- AND con.confkey = pkc.conkey

- AND pkc.connamespace = npkc.oid

- AND c.relowner = u.usesysid

- AND c.relkind = 'r'

+ WHERE c.relkind = 'r'

+ AND con.contype = 'f'

+ AND (pkc.contype IN ('p', 'u') OR pkc.contype IS NULL)

AND u.usename = current_user;

GRANT SELECT ON referential_constraints TO PUBLIC;