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Views: 2672 | Replies: 2
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Join Date: Sep 2006
Posts: 104
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Junior Poster
I have to add a not null column in a table.
I am using
It gives me error
ALTER TABLE only allows columns to be added that can contain nulls, or have a DEFAULT definition specified, or the column being added is an identity or timestamp column, or alternatively if none of the previous conditions are satisfied the table must be empty to allow addition of this column. Column 'xyz' cannot be added to non-empty table 'abc' because it does not satisfy these conditions.
can anybody have any idea, what's wrong with my SP?
?
I am using
IF NOT EXISTS(SELECT * FROM information_schema.columns WHERE column_name = 'xyz' AND table_name = 'abc') BEGIN ALTER TABLE abc WITH NOCHECK ADD xyz MONEY NOT NULL END
It gives me error
ALTER TABLE only allows columns to be added that can contain nulls, or have a DEFAULT definition specified, or the column being added is an identity or timestamp column, or alternatively if none of the previous conditions are satisfied the table must be empty to allow addition of this column. Column 'xyz' cannot be added to non-empty table 'abc' because it does not satisfy these conditions.
can anybody have any idea, what's wrong with my SP?
?
Last edited by peter_budo : Apr 7th, 2008 at 5:25 am. Reason: Keep It Organized - please use [code] tags
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Join Date: Aug 2006
Location: Egypt
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Master Poster
You can't, simply when you add a column all rows before this adding have this column = null, so you can remove all rows and add a non-nullable column.
B.Sc Computer Science, Helwan University
Microsoft Student Partner
Personal blog http://ramymahrous.blogspot.com/
Arabic technical blog http://fci-h-ar.blogspot.com/
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Microsoft Student Partner
Personal blog http://ramymahrous.blogspot.com/
Arabic technical blog http://fci-h-ar.blogspot.com/
English technical blog http://fci-h.blogspot.com/
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Join Date: Aug 2005
Location: Ohio
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Posting Whiz in Training
if you want to add a not null column to a table with rows, you need to set a default value to the new column.
adding a new column without a default value would put a null in the column for each row, which would be breaking the not null rule.
adding a new column without a default value would put a null in the column for each row, which would be breaking the not null rule.
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