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TITLE="PostgreSQL 9.1beta1 Documentation"
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TITLE="System Catalogs"
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SUMMARY="Header navigation table"
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>PostgreSQL 9.1beta1 Documentation</A
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HREF="catalog-pg-tablespace.html"
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TITLE="System Catalogs"
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>Chapter 45. System Catalogs</TD
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TITLE="System Catalogs"
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HREF="catalog-pg-ts-config.html"
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NAME="CATALOG-PG-TRIGGER"
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> stores triggers on tables
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HREF="sql-createtrigger.html"
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for more information.
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><COL><COL><COL><COL><THEAD
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HREF="catalog-pg-class.html"
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>The table this trigger is on</TD
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>Trigger name (must be unique among triggers of same table)</TD
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HREF="catalog-pg-proc.html"
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>The function to be called</TD
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>Bit mask identifying trigger firing conditions</TD
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> Controls in which <A
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HREF="runtime-config-client.html#GUC-SESSION-REPLICATION-ROLE"
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>session_replication_role</A
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> = trigger fires in <SPAN
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> = trigger is disabled,
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> = trigger fires in <SPAN
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> = trigger fires always.
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>True if trigger is internally generated (usually, to enforce
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the constraint identified by <TT
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HREF="catalog-pg-class.html"
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>The table referenced by a referential integrity constraint</TD
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HREF="catalog-pg-class.html"
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>The index supporting a unique, primary key, or referential integrity constraint</TD
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HREF="catalog-pg-constraint.html"
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> entry associated with the trigger, if any</TD
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>True if constraint trigger is deferrable</TD
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>True if constraint trigger is initially deferred</TD
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>Number of argument strings passed to trigger function</TD
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HREF="catalog-pg-attribute.html"
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>Column numbers, if trigger is column-specific; otherwise an
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>Argument strings to pass to trigger, each NULL-terminated</TD
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>Expression tree (in <CODE
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>nodeToString()</CODE
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representation) for the trigger's <TT
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> Currently, column-specific triggering is supported only for
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only for that event type. <TT
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contain bits for other event types as well, but those are presumed
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to be table-wide regardless of what is in <TT
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largely redundant with the referenced <TT
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However, it is possible for a non-deferrable trigger to be associated
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with a deferrable constraint: foreign key constraints can have some
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deferrable and some non-deferrable triggers.
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>pg_class.relhastriggers</TT
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must be true if a relation has any triggers in this catalog.
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