How to set sql server setting let to set null value when a empty string (zero length)

How to set sql server setting let to set null value when a empty string
(zero length) set to column?
I want it automatic to set null value when maintain data is a zero-length
string press to column of table. for example,
when a statement as "Insert into table1 values ('abc', '', '')' become to
save abc, null and null three values to table1.There is no such setting in SQL Server. You could create a trigger which per
forms this, but I would
look for some alternate options instead.
Tibor Karaszi, SQL Server MVP
http://www.karaszi.com/sqlserver/default.asp
http://www.solidqualitylearning.com/
"ABC" <abc@.abc.com> wrote in message news:%230Fav01RGHA.2276@.tk2msftngp13.phx.gbl...darkred">
> How to set sql server setting let to set null value when a empty string (z
ero length) set to
> column?
> I want it automatic to set null value when maintain data is a zero-length
string press to column
> of table. for example,
> when a statement as "Insert into table1 values ('abc', '', '')' become to
save abc, null and null
> three values to table1.
>|||Would probaby have to create a trigger of the form (completely untested!)
CREATE TRIGGER NullifySomeEmptyStrings
ON table1
FOR AFTER INSERT, UPDATE
AS
--NULL out column2 if it now contains an empty string ''
IF UPDATE(column2)
BEGIN
UPDATE table1
SET column2 = NULL
WHERE table1.ThePrimaryKeyColumn IN
(SELECT ThePrimaryKeyColumn
FROM INSERTED
WHERE INSERTED.column2 = '')
END
"ABC" <abc@.abc.com> wrote in message
news:%230Fav01RGHA.2276@.tk2msftngp13.phx.gbl...
> How to set sql server setting let to set null value when a empty string
> (zero length) set to column?
> I want it automatic to set null value when maintain data is a zero-length
> string press to column of table. for example,
> when a statement as "Insert into table1 values ('abc', '', '')' become to
> save abc, null and null three values to table1.
>|||Why do you want it to be Null?
If you use Front End application, validate this and send valid data to
server
Madhivanan