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Fix erroneous documentation of the syntax of CREATE CONSTRAINT TRIGGER.

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The grammar requires a specific ordering of the clauses, but the
documentation showed a different order.  This error was introduced in
commit b47953f9c6, which merged the CREATE
CONSTRAINT TRIGGER documentation into the CREATE TRIGGER page.  There is
no code bug AFAICS.
This commit is contained in:
Tom Lane
2011-03-02 11:39:18 -05:00
parent 7e49330cad
commit 2f6c8453cf
1 changed files with 4 additions and 3 deletions
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7
doc/src/sgml/ref/create_trigger.sgml
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@@ -22,9 +22,10 @@ PostgreSQL documentation
<refsynopsisdiv>
<synopsis>
CREATE [ CONSTRAINT ] TRIGGER <replaceable class="PARAMETER">name</replaceable> { BEFORE | AFTER | INSTEAD OF } { <replaceable class="PARAMETER">event</replaceable> [ OR ... ] }
ON <replaceable class="PARAMETER">table</replaceable> [ FOR [ EACH ] { ROW | STATEMENT } ]
ON <replaceable class="PARAMETER">table</replaceable>
[ FROM <replaceable class="parameter">referenced_table_name</replaceable> ]
{ NOT DEFERRABLE | [ DEFERRABLE ] { INITIALLY IMMEDIATE | INITIALLY DEFERRED } }
[ FOR [ EACH ] { ROW | STATEMENT } ]
[ WHEN ( <replaceable class="parameter">condition</replaceable> ) ]
EXECUTE PROCEDURE <replaceable class="PARAMETER">function_name</replaceable> ( <replaceable class="PARAMETER">arguments</replaceable> )
</synopsis>
@@ -518,8 +519,8 @@ CREATE TRIGGER view_insert
deletes fire <emphasis>after</> the cascaded <literal>DELETE</> completes.
The <productname>PostgreSQL</productname> behavior is for <literal>BEFORE
DELETE</literal> to always fire before the delete action, even a cascading
one. This is considered more consistent. There is also unpredictable
behavior when <literal>BEFORE</literal> triggers modify rows or prevent
one. This is considered more consistent. There is also nonstandard
behavior if <literal>BEFORE</literal> triggers modify rows or prevent
updates during an update that is caused by a referential action. This can
lead to constraint violations or stored data that does not honor the
referential constraint.