database/postgres
database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-05-29 16:21:20 +03:00
Code

Fix trigger example for PG 7.2 change: count(*) now returns int8.

Browse Source
This commit is contained in:
Tom Lane 2001-12-04 02:07:11 +00:00
parent 7321eed9e8
commit 0532175496
1 changed files with 12 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
doc/src/sgml/trigger.sgml
View File

@ -1,3 +1,7 @@
<!--
$Header: /cvsroot/pgsql/doc/src/sgml/trigger.sgml,v 1.19 2001/12/04 02:07:11 tgl Exp $
-->
<chapter id="triggers"> <chapter id="triggers">
<title>Triggers</title> <title>Triggers</title>
@ -451,7 +455,7 @@ PG_FUNCTION_INFO_V1(trigf);
Datum Datum
trigf(PG_FUNCTION_ARGS) trigf(PG_FUNCTION_ARGS)
{ {
TriggerData *trigdata = (TriggerData *) fcinfo->context; TriggerData *trigdata = (TriggerData *) fcinfo->context;
TupleDesc tupdesc; TupleDesc tupdesc;
HeapTuple rettuple; HeapTuple rettuple;
char *when; char *when;
@ -490,8 +494,12 @@ trigf(PG_FUNCTION_ARGS)
if (ret < 0) if (ret < 0)
elog(NOTICE, "trigf (fired %s): SPI_exec returned %d", when, ret); elog(NOTICE, "trigf (fired %s): SPI_exec returned %d", when, ret);
i = SPI_getbinval(SPI_tuptable->vals[0], SPI_tuptable->tupdesc, 1, &amp;isnull); /* count(*) returns int8 as of PG 7.2, so be careful to convert */
i = (int) DatumGetInt64(SPI_getbinval(SPI_tuptable->vals[0],
SPI_tuptable->tupdesc,
1,
&amp;isnull));
elog (NOTICE, "trigf (fired %s): there are %d tuples in ttest", when, i); elog (NOTICE, "trigf (fired %s): there are %d tuples in ttest", when, i);
@ -499,7 +507,7 @@ trigf(PG_FUNCTION_ARGS)
if (checknull) if (checknull)
{ {
i = SPI_getbinval(rettuple, tupdesc, 1, &amp;isnull); (void) SPI_getbinval(rettuple, tupdesc, 1, &amp;isnull);
if (isnull) if (isnull)
rettuple = NULL; rettuple = NULL;
} }