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Add information_schema.triggered_update_columns

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This reflects the recently added support for triggers on columns.
This commit is contained in:
Peter Eisentraut
2009-12-31 14:41:23 +00:00
parent 31cf893088
commit c584d11bb3
2 changed files with 96 additions and 8 deletions
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28
src/backend/catalog/information_schema.sql
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@ -4,7 +4,7 @@
*
* Copyright (c) 2003-2009, PostgreSQL Global Development Group
*
* $PostgreSQL: pgsql/src/backend/catalog/information_schema.sql,v 1.61 2009/12/30 22:48:10 petere Exp $
* $PostgreSQL: pgsql/src/backend/catalog/information_schema.sql,v 1.62 2009/12/31 14:41:23 petere Exp $
*/
/*
@ -1852,13 +1852,27 @@ GRANT SELECT ON tables TO PUBLIC;
CREATE VIEW triggered_update_columns AS
SELECT CAST(current_database() AS sql_identifier) AS trigger_catalog,
CAST(null AS sql_identifier) AS trigger_schema,
CAST(null AS sql_identifier) AS trigger_name,
CAST(n.nspname AS sql_identifier) AS trigger_schema,
CAST(t.tgname AS sql_identifier) AS trigger_name,
CAST(current_database() AS sql_identifier) AS event_object_catalog,
CAST(null AS sql_identifier) AS event_object_schema,
CAST(null AS sql_identifier) AS event_object_table,
CAST(null AS sql_identifier) AS event_object_column
WHERE false;
CAST(n.nspname AS sql_identifier) AS event_object_schema,
CAST(c.relname AS sql_identifier) AS event_object_table,
CAST(a.attname AS sql_identifier) AS event_object_column
FROM pg_namespace n, pg_class c, pg_trigger t,
(SELECT tgoid, (ta0.tgat).x AS tgattnum, (ta0.tgat).n AS tgattpos
FROM (SELECT oid AS tgoid, information_schema._pg_expandarray(tgattr) AS tgat FROM pg_trigger) AS ta0) AS ta,
pg_attribute a
WHERE n.oid = c.relnamespace
AND c.oid = t.tgrelid
AND t.oid = ta.tgoid
AND (a.attrelid, a.attnum) = (t.tgrelid, ta.tgattnum)
AND NOT t.tgisconstraint
AND (NOT pg_is_other_temp_schema(n.oid))
AND (pg_has_role(c.relowner, 'USAGE')
-- SELECT privilege omitted, per SQL standard
OR has_column_privilege(c.oid, a.attnum, 'INSERT, UPDATE, REFERENCES') );
GRANT SELECT ON triggered_update_columns TO PUBLIC;