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nobody wrote:
> Author: Alex French <alexfrench(at)gmail(dot)com>
> ----
> Note that pg does not support changing the type of a column. Instead, use something like the code below to change, say, a varchar(32) into varchar(64) (assuming the collumn is called abc):
>
> BEGIN;
> ALTER TABLE mytable ADD COLUMN abc_new varchar(64);
> UPDATE mytable SET abc_new = abc;
> ALTER TABLE mytable RENAME abc TO abc_old;
> ALTER TABLE mytable RENAME abc_new TO abc;
> COMMIT;
>
> If you're chaning the type of the column radically, you need to do more fancy type casting, but that's the theory.
> ----
> Manual page: http://wwwmaster.postgresql.org/docs/7.4/interactive/ddl-alter.html
> Reject: http://wwwmaster.postgresql.org/admin/comments.php?action=reject&id=1966
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>
>
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