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Fire non-deferred AFTER triggers immediately upon query completion,

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rather than when returning to the idle loop.  This makes no particular
difference for interactively-issued queries, but it makes a big difference
for queries issued within functions: trigger execution now occurs before
the calling function is allowed to proceed.  This responds to numerous
complaints about nonintuitive behavior of foreign key checking, such as
http://archives.postgresql.org/pgsql-bugs/2004-09/msg00020.php, and
appears to be required by the SQL99 spec.
Also take the opportunity to simplify the data structures used for the
pending-trigger list, rename them for more clarity, and squeeze out a
bit of space.
This commit is contained in:
Tom Lane
2004-09-10 18:40:09 +00:00
parent 856d1faac1
commit b339d1fff6
17 changed files with 967 additions and 631 deletions
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4
src/backend/tcop/utility.c
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@@ -10,7 +10,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/tcop/utility.c,v 1.228 2004/08/29 05:06:49 momjian Exp $
* $PostgreSQL: pgsql/src/backend/tcop/utility.c,v 1.229 2004/09/10 18:40:00 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -912,7 +912,7 @@ ProcessUtility(Node *parsetree,
break;
case T_ConstraintsSetStmt:
DeferredTriggerSetState((ConstraintsSetStmt *) parsetree);
AfterTriggerSetState((ConstraintsSetStmt *) parsetree);
break;
case T_CreateGroupStmt: