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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>
</screen>
The <replaceable class="parameter">count</replaceable> is the number
of rows deleted. If <replaceable class="parameter">count</replaceable> is
0, no rows matched the <replaceable
class="parameter">condition</replaceable> (this is not considered
an error).
of rows deleted. Note that the number may be less than the number of
rows that matched the <replaceable
class="parameter">condition</replaceable> when deletes were
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>

10
doc/src/sgml/ref/update.sgml
View File

@ -226,10 +226,12 @@ UPDATE [ ONLY ] <replaceable class="PARAMETER">table</replaceable> [ [ AS ] <rep
UPDATE <replaceable class="parameter">count</replaceable>
</screen>
The <replaceable class="parameter">count</replaceable> is the number
of rows updated. If <replaceable class="parameter">count</replaceable> is
0, no rows matched the <replaceable
class="parameter">condition</replaceable> (this is not considered
an error).
of rows updated, including matched rows whose values did not change.
Note that the number may be less than the number of rows that matched
the <replaceable class="parameter">condition</replaceable> when
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>