using sql query for specific column i want to show the value 0 in the database

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In database design structure as follows

Billno Varchar(10)
Course Varchar(10)
Special Discount Varchar(10)

using sql query i want to insert the Special Discount value is 0, if the Special Discount value is not there in the database

for that how can i do using sql query.

Rgds,
Narasiman P.

Posted 9-Jul-13 18:31pm

Member 8054539

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Sushil Mate · Answer 1 · 2013-07-09T18:44:00

Solution 1

Don't use Varchar(N) if the column suppose to take integer value.

SQL

ALTER TABLE TableName ADD CONSTRAINT ConstraintAnyName DEFAULT '0' FOR Special Discount;

Posted 9-Jul-13 18:44pm

Sushil Mate

Updated 9-Jul-13 18:48pm

v2

Naz_Firdouse · Answer 2 · 2013-07-09T19:03:00

Solution 2

SQL

ALTER TABLE TableName
 ALTER COLUMN ColumnName SET DEFAULT 0

Refer this for more info...
SQL DEFAULT Constraint[^]

Posted 9-Jul-13 19:03pm

Naz_Firdouse

_Damian S_ · Answer 3 · 2013-07-09T19:05:00

Solution 3

SQL

Update TABLENAME set [Special Discount]=0 where [Special Discount] is null

Posted 9-Jul-13 19:05pm

_Damian S_

v2