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Check if column exists on SQL 2005

I found this script to check if a column exist in a table and to create the col if not exisiting:

IF NOT EXISTS (SELECT TABLE_NAME,COLUMN_NAME
                         FROM master.dbo.INFORMATION_SCHEMA_COLUMNS
                         WHERE TABLE_NAME=N'myTable' AND COLUMN_NAME = N'myNewCol'
ALTER TABLE myTable
ADD myNewCol int NOT NULL

but it is not working on SQL 2005 Standard.
Why
0
chriswies
Asked:
chriswies
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1 Solution
 
Guy Hengel [angelIII / a3]Billing EngineerCommented:
you were missing the closing )
also, it's master.INFORMATON_SCHEMA.Columns, and not master.dbo.information_schema_columns
also, you should NOT specify master.dbo for the information_schema views:

IF NOT EXISTS (SELECT TABLE_NAME,COLUMN_NAME
                         FROM INFORMATION_SCHEMA.COLUMNS
                         WHERE TABLE_NAME=N'myTable' AND COLUMN_NAME = N'myNewCol' )
BEGIN
ALTER TABLE myTable
ADD myNewCol int NOT NULL
END
0
 
chriswiesAuthor Commented:
thanks,
my first try was now only the select.

SELECT TABLE_NAME,COLUMN_NAME
 FROM INFORMATION_SCHEMA.COLUMNS
 WHERE TABLE_NAME=N'tkey_wdReplacements'

but I got no results? I checked the table name and expected to get a list of the table fields.
Chris
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Guy Hengel [angelIII / a3]Billing EngineerCommented:
are you in the database itself (ie the context).
the information_schema views refer to the currently connected database...

does the full query:
SELECT DISTINCT TABLE_NAME
 FROM INFORMATION_SCHEMA.COLUMNS

return your table(s) of the database?
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chriswiesAuthor Commented:
OK, I got it. I was in Master, not in my db.
Thanks
Chris
0
 
scollegeCommented:
Doesn't work for me either, and I am most certainly in the correct database.

0
 
Guy Hengel [angelIII / a3]Billing EngineerCommented:
scollege: you shall open your own question if this "solution" does not help you.
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