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Date: Tue, 25 Mar 2003 16:18:11 +0100
From: Christoph Haller <ch@rodos.fzk.de>
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To: pgsql-sql@postgresql.org
Cc: atul@imcindia.net
Subject: Re: How to increase Column width of table
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>
>  Atul here, i have one table and i would like to increase the length
of
>  existing column and the sql statement is
>
>        Exisiting Column  is "vehicle_make"  varchar(30)
>
>        SQL: alter table commute_profile alter column "vehicle_make"
> varchar(100)
>
>        But this gives error.
>
>        ERROR:  parser: parse error at or near "varchar"
>
I'm afraid there is no one-step-solution to this.
You'll have to go the hard way as

CREATE new_table (
...
... varchar(100),
...
);
INSERT INTO new_table as SELECT * FROM old_table;
DROP old_table;
ALTER TABLE new_table RENAME TO old_table;
And don't forget about re-creating related indexes etc.

Regards, Christoph