How to add a check constraint to a column to accept values in the following format: "L214"?

All I could come up with is this:
check (column_name like '____');
But That doesn't enforce the first character to be a letter and the other three to be numbers.

Hi,
"PS: Why the f***you have so many subforums here?"
Because it is much easier to seperate and let experts answer to specific details of SQL Server. SQL Server is not a small product as many people think ;-)
Here is the solution:
CREATe table SampleA (A INT, B VARCHAR(MAX) CHECK (B LIKE '[A-Z][0-9][0-9][0-9]'))
INSERT INTO SampleA VALUES (1,'0000')
Msg 547, Level 16, State 0, Line 2
The INSERT statement conflicted with the CHECK constraint "CK__SampleA__B__38B96646". The conflict occurred in database "master", table "dbo.SampleA", column 'B'.
The statement has been terminated.
INSERT INTO SampleA VALUES (1,'L000')
--(1 row(s) affected)
INSERT INTO SampleA VALUES (1,'L0001')
Msg 547, Level 16, State 0, Line 2
The INSERT statement conflicted with the CHECK constraint "CK__SampleA__B__38B96646". The conflict occurred in database "master", table "dbo.SampleA", column 'B'.
The statement has been terminated.
-Jens
Jens K. Suessmeyer http://blogs.msdn.com/Jenss

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&nbsp
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