Re: Optional REFERENCES Feature in CREATE TRIGGER Command

I really appreciate that, Mr. Momjian.

>
> This has been saved for the 8.1 release:
>
>     http:/momjian.postgresql.org/cgi-bin/pgpatches2
>
> ---------------------------------------------------------------------------
>
> hyip@site.uottawa.ca wrote:
>> Hi,
>>
>> The attached patch adds the optional REFERENCES syntax in CREATE TRIGGER
>> statement to make an automatic alias for OLD/NEW record during trigger
>> setup.  The implementation of this new feature makes CREATE TRIGGER
>> command more compatible to SQL standard, and allows the future
>> implementation of executing SQL commands in trigger action.
>>
>> After the implementation, the extended syntax of statement is as
>> follows.
>>
>> CREATE TRIGGER name BEFORE|AFTER
>>     INSERT|DELETE|UPDATE [OR...] ON tablename
>>     [REFERENCING OLD|NEW [AS] identifier]
>>     [FOR [EACH] ROW|STATEMENT]
>>     EXECUTE PROCEDURE funcname (arguments)
>>
>> The patch will also update two columns, condition_reference_old_table
>> and
>> condition_reference_new_table with alias names of the OLD/NEW record in
>> the Triggers table of the information schema.
>
> [ Attachment, skipping... ]
>
>>
>> ---------------------------(end of broadcast)---------------------------
>> TIP 9: the planner will ignore your desire to choose an index scan if
>> your
>>       joining column's datatypes do not match
>
> --
>   Bruce Momjian                        |  http://candle.pha.pa.us
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>