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Document DELETE/UPDATE command tag behavior when triggers are involved.

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Marti Raudsepp
This commit is contained in:
Robert Haas 2011-10-10 12:53:04 -04:00
parent 0ff7ea5d3c
commit 61dd737c29
2 changed files with 12 additions and 8 deletions
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10
doc/src/sgml/ref/delete.sgml
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@ -206,10 +206,12 @@ DELETE FROM [ ONLY ] <replaceable class="PARAMETER">table</replaceable> [ [ AS ]
DELETE <replaceable class="parameter">count</replaceable> DELETE <replaceable class="parameter">count</replaceable>
</screen> </screen>
The <replaceable class="parameter">count</replaceable> is the number The <replaceable class="parameter">count</replaceable> is the number
of rows deleted. If <replaceable class="parameter">count</replaceable> is of rows deleted. Note that the number may be less than the number of
0, no rows matched the <replaceable rows that matched the <replaceable
class="parameter">condition</replaceable> (this is not considered class="parameter">condition</replaceable> when deletes were
an error). suppressed by a <literal>BEFORE DELETE</> trigger. If <replaceable
class="parameter">count</replaceable> is 0, no rows were deleted by
the query (this is not considered an error).
</para> </para>
<para> <para>

10
doc/src/sgml/ref/update.sgml
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@ -226,10 +226,12 @@ UPDATE [ ONLY ] <replaceable class="PARAMETER">table</replaceable> [ [ AS ] <rep
UPDATE <replaceable class="parameter">count</replaceable> UPDATE <replaceable class="parameter">count</replaceable>
</screen> </screen>
The <replaceable class="parameter">count</replaceable> is the number The <replaceable class="parameter">count</replaceable> is the number
of rows updated. If <replaceable class="parameter">count</replaceable> is of rows updated, including matched rows whose values did not change.
0, no rows matched the <replaceable Note that the number may be less than the number of rows that matched
class="parameter">condition</replaceable> (this is not considered the <replaceable class="parameter">condition</replaceable> when
an error). updates were suppressed by a <literal>BEFORE UPDATE</> trigger. If
<replaceable class="parameter">count</replaceable> is 0, no rows were
updated by the query (this is not considered an error).
</para> </para>
<para> <para>