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Using trigger instead of defaults?
Message
From
14/05/2005 23:38:11
 
General information
Forum:
Microsoft SQL Server
Category:
Other
Miscellaneous
Thread ID:
01014238
Message ID:
01014319
Views:
24
BIG thanks Sergey! You've made it too easy for me. It used to be Michael Levy who used to answer all my SQL-related questions but you've taken over his post. Thanks again.

>Hi John,
>
>You can use only constants or system functions in DEFAULTs. A trigger can accomplish what you want. Notice that table has to have a primary key in order to implement trigger.
CREATE TRIGGER trig_test
>ON dbo.mytable
>FOR INSERT
>AS
>BEGIN
>        -- id is a PK for mytable
>	UPDATE mytable SET field2 =
>		(CASE WHEN inserted.field1 LIKE 'D%' THEN 'M' ELSE 'W' END)
>		FROM mytable JOIN inserted
>			ON inserted.id = mytable.id
>		WHERE inserted.field2 IS NULL	
>END
>
>
>>I want to create a default value for a column when new records are added but the default value depends on value of another column and I don't know how this can be best done.
>>
>>For example, if I have a very simple table with just two character columns of FIELD1 & FIELD2, I want the default value of FIELD2 to be:
>>
>>1) If value of FIELD1='MOMMY' then default for FIELD2='WOMEN'
>>2) If vlaue of FIELD2='DADDY' then default for FIELD2='MEN'
>>
>>How can I go about doing this using either DEFAULT or TRIGGER? TIA.
It's "my" world. You're just living in it.
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