diff options
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/src/sgml/ref/create_trigger.sgml | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/doc/src/sgml/ref/create_trigger.sgml b/doc/src/sgml/ref/create_trigger.sgml index 982ab6f3ee4..71869c996e3 100644 --- a/doc/src/sgml/ref/create_trigger.sgml +++ b/doc/src/sgml/ref/create_trigger.sgml @@ -197,9 +197,11 @@ CREATE [ OR REPLACE ] [ CONSTRAINT ] TRIGGER <replaceable class="parameter">name of the rows inserted, deleted, or modified by the current SQL statement. This feature lets the trigger see a global view of what the statement did, not just one row at a time. This option is only allowed for - an <literal>AFTER</literal> trigger that is not a constraint trigger; also, if - the trigger is an <literal>UPDATE</literal> trigger, it must not specify - a <replaceable class="parameter">column_name</replaceable> list. + an <literal>AFTER</literal> trigger on a plain table (not a foreign table). + The trigger should not be a constraint trigger. Also, if the trigger is + an <literal>UPDATE</literal> trigger, it must not specify + a <replaceable class="parameter">column_name</replaceable> list when using + this option. <literal>OLD TABLE</literal> may only be specified once, and only for a trigger that can fire on <literal>UPDATE</literal> or <literal>DELETE</literal>; it creates a transition relation containing the <firstterm>before-images</firstterm> of all rows |