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Message Posted: Tue, 05 Mar 2002 @ 11:30:50 GMT

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Subj:   Re: On ALTER TABLE
From:   David Wellman


I think the reason that you're not getting any error message is because the ALTER TABLE statement can do more than simply add/remove columns.

It can also be used to change some attributes of an existing column. For instance you can add a FORMAT clause to an existing column, and in your case I think the DBMS is interpreting your request as that type of request.

For instance, if you issue the following commands;

create table t1 (a int, b int);

show table t1;

alter table t1
add a format '9999';

show table t1;

The two "show table" commands will give different results.

Hope that helps,


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