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Allow FOR EACH ROW triggers on partitioned tables

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Previously, FOR EACH ROW triggers were not allowed in partitioned
tables.  Now we allow AFTER triggers on them, and on trigger creation we
cascade to create an identical trigger in each partition.  We also clone
the triggers to each partition that is created or attached later.

This means that deferred unique keys are allowed on partitioned tables,
too.

Author: Álvaro Herrera
Reviewed-by: Peter Eisentraut, Simon Riggs, Amit Langote, Robert Haas,
	Thomas Munro
Discussion: https://postgr.es/m/20171229225319.ajltgss2ojkfd3kp@alvherre.pgsql
This commit is contained in:
Alvaro Herrera
2018-03-23 10:48:22 -03:00
parent 5700aa1301
commit 86f575948c
20 changed files with 1078 additions and 93 deletions
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5
src/include/commands/trigger.h
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@ -159,7 +159,8 @@ extern PGDLLIMPORT int SessionReplicationRole;
extern ObjectAddress CreateTrigger(CreateTrigStmt *stmt, const char *queryString,
Oid relOid, Oid refRelOid, Oid constraintOid, Oid indexOid,
bool isInternal);
Oid funcoid, Oid parentTriggerOid, Node *whenClause,
bool isInternal, bool in_partition);
extern void RemoveTriggerById(Oid trigOid);
extern Oid get_trigger_oid(Oid relid, const char *name, bool missing_ok);
@ -167,7 +168,7 @@ extern Oid get_trigger_oid(Oid relid, const char *name, bool missing_ok);
extern ObjectAddress renametrig(RenameStmt *stmt);
extern void EnableDisableTrigger(Relation rel, const char *tgname,
char fires_when, bool skip_system);
char fires_when, bool skip_system, LOCKMODE lockmode);
extern void RelationBuildTriggers(Relation relation);