Re: Is there any eqvivalent or alternative to UPDATE(column) or COLUMNS_UPDATED()

Yes, i know, I just write, that these are the possibilities. Or are
there any else?

C.

Klaus Sonnenleiter wrote, On 12/31/2002 3:25 PM:
> I think the question was how to find out which columns were affected by the
> update statement. TG_OP will only tell you whether an update fired the
> trigger.
>
> Klaus
>
> On Thursday 26 December 2002 03:29, CoL wrote:
>> http://www.postgresql.org/idocs/index.php?trigger-manager.html
>> http://www.postgresql.org/idocs/index.php?plpgsql-trigger.html
>> TG_OP ?
>>
>> C.
>>
>> shreedhar wrote, On 12/26/2002 12:57 PM:
>> > Is there any eqvivalent or alternative to the following IF UPDATE(column)
>> > or IF(COLUMNS_UPDATED()) of SQLServer2000.
>> >
>> > IF UPDATE (column)
>> >
>> > Tests for an INSERT or UPDATE action to a specified column and is not
>> > used with DELETE operations. More than one column can be specified.
>> > Because the table name is specified in the ON clause, do not include the
>> > table name before the column name in an IF UPDATE clause. To test for an
>> > INSERT or UPDATE action for more than one column, specify a separate
>> > UPDATE(column) clause following the first one. IF UPDATE will return the
>> > TRUE value in INSERT actions because the columns have either explicit
>> > values or implicit (NULL) values inserted.
>> >
>> > IF (COLUMNS_UPDATED())
>> >
>> > Tests, in an INSERT or UPDATE trigger only, whether the mentioned column
>> > or columns were inserted or updated. COLUMNS_UPDATED returns a varbinary
>> > bit pattern that indicates which columns in the table were inserted or
>> > updated.
>> >
>> > Thanks And Regards,
>> >
>> > Sreedhar
>>
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