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From "Jean T. Anderson (JIRA)" <derby-...@db.apache.org>
Subject [jira] Commented: (DERBY-115) BEFORE triggers missing from CREATE TRIGGER documentation
Date Fri, 24 Jun 2005 22:17:58 GMT
    [ http://issues.apache.org/jira/browse/DERBY-115?page=comments#action_12314433 ] 

Jean T. Anderson commented on DERBY-115:
----------------------------------------

The NO CASCADE BEFORE example in the patch won't work because BEFORE triggers don't allow
INSERTs. A BEFORE trigger can execute a SQL function, so here's a suggestion:
 
CREATE TRIGGER t1 NO CASCADE BEFORE UPDATE ON x 
FOR EACH ROW MODE DB2SQL
  values app.notifyEmail('Jerry', 'Table x is about to be updated');



> BEFORE triggers missing from CREATE TRIGGER documentation
> ---------------------------------------------------------
>
>          Key: DERBY-115
>          URL: http://issues.apache.org/jira/browse/DERBY-115
>      Project: Derby
>         Type: Bug
>   Components: Documentation
>     Versions: 10.0.2.1
>     Reporter: Daniel John Debrunner
>     Priority: Minor
>  Attachments: derby115.zip
>
> Derby does support before triggers, syntax is the same as after triggers,
> but replace AFTER with NO CASCADE BEFORE. Eg.
> create trigger t1
> NO CASCADE BEFORE insert on x
> referencing new_table as newrowtab
> for each statement mode db2sql
> insert into y select x from newrowtab;

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