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.

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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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src/backend/commands/trigger.c

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