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Commit6959cb5

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Fix incorrect permissions check in information_schema.key_column_usage view:
it was checking a pg_constraint OID instead of pg_class OID, resulting in"relation with OID nnnnn does not exist" failures for anyone who wasn'towner of the table being examined. Per bug #2848 from Laurence Rowe.Note: for existing 8.2 installations a simple version update won't fix this;the easiest fix is to CREATE OR REPLACE this view with the correcteddefinition.
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‎src/backend/catalog/information_schema.sql

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@@ -4,7 +4,7 @@
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*
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* Copyright (c) 2003-2007, PostgreSQL Global Development Group
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*
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* $PostgreSQL: pgsql/src/backend/catalog/information_schema.sql,v 1.39 2007/01/05 22:19:24 momjian Exp $
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* $PostgreSQL: pgsql/src/backend/catalog/information_schema.sql,v 1.40 2007/01/16 18:32:26 tgl Exp $
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*/
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/*
@@ -964,10 +964,10 @@ CREATE VIEW key_column_usage AS
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ANDr.relkind='r'
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AND (NOT pg_is_other_temp_schema(nr.oid))
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AND (pg_has_role(r.relowner,'USAGE')
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OR has_table_privilege(c.oid,'SELECT')
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OR has_table_privilege(c.oid,'INSERT')
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OR has_table_privilege(c.oid,'UPDATE')
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OR has_table_privilege(c.oid,'REFERENCES')) )AS ss
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OR has_table_privilege(r.oid,'SELECT')
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OR has_table_privilege(r.oid,'INSERT')
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OR has_table_privilege(r.oid,'UPDATE')
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OR has_table_privilege(r.oid,'REFERENCES')) )AS ss
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WHEREss.roid=a.attrelid
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ANDa.attnum= (ss.x).x
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AND NOTa.attisdropped;

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