Create a new column
alter <tablename> add column <newcolname> varchar(25);
Then copy the old column into the new column:
update <tablename> set <newcolname> = <oldcolname>;
Drop the last column:
alter <tablename> drop column <oldcolname>;
Rename the column:
alter <tablename> rename column <newcolname> to <oldcolname>;
Take care for INDEXES if there are any.
This should do it.
Best regards.
----- Original Message -----
From: "Chitta Ranjan Mishra" <c_r_mishra@yahoo.co.in>
To: <pgsql-admin@postgresql.org>
Sent: Thursday, December 11, 2003 7:19 AM
Subject: [ADMIN] Help---- Urgent
> Dear Sir,
> I wnat to alter the size of one of the column of a
> table. How to do this in Postgres ? Plz help me.
> It's very urgent...
>
> I tried with the following syntax :
> but it failed....
>
> alter table tablename modify(coumnname varchar(25));
>
> it's very urgnet...plz reply soon..
>
> Thanking you,
> Regds
> C.R.Mishra
>
>
>
>
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