how to identify null fields in sql table

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How can i get which fields are allow null and not null using sql query

is there query for identifying null and not null fields

Posted 5-Jul-11 23:17pm

3 solutions

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Abhinav S · Answer 1 · 2011-07-05T23:23:00

A value of NULL indicates that the value is unknown.
So check any column for NULL or not null.
For more information - see http://msdn.microsoft.com/en-us/library/ms191504.aspx[^].

Posted 5-Jul-11 23:23pm

Updated 5-Jul-11 23:24pm

v2

Toniyo Jackson · Answer 2 · 2011-07-05T23:28:00

Try this.

SELECT * FROM INFORMATION_SCHEMA.COLUMNS a
 WHERE a.TABLE_NAME='tablename'
   AND IS_NULLABLE = 'No' -- NO for not null and YES for null

Posted 5-Jul-11 23:28pm

Updated 5-Jul-11 23:29pm

v2

2irfanshaikh · Answer 3 · 2011-07-05T23:22:00

Use

sp_help Table1

you will get all the details about the table.

Posted 5-Jul-11 23:22pm

v2