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From: Gerardo Herzig <gherzig@fmed.uba.ar>
To: Suresh Raja <suresh.rajaabc@gmail.com>
Cc: pgsql-general@postgresql.org
Cc: pgsql-sql@postgresql.org
Subject: Re: check data for datatype
Date: Tue, 7 Apr 2015 13:59:46 -0300 (ART)
Message-ID: <1981538304.72853.1428425986418.JavaMail.root@fmed.uba.ar> (raw)
In-Reply-To: <CAJP7dtA8eerfd0KvAvNBd3806BQ6uwr2jYEcwgAbXJM_bDs5AQ@mail.gmail.com>
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I guess that could need something like (untested)

delete from bigtable text_column !~ '^[0-9][0-9]*$';


HTH
Gerardo

----- Mensaje original -----
> De: "Suresh Raja" <suresh.rajaabc@gmail.com>
> Para: pgsql-general@postgresql.org, pgsql-sql@postgresql.org
> Enviados: Viernes, 27 de Marzo 2015 15:08:43
> Asunto: [SQL] check data for datatype
> 
> 
> 
> 
> 
> 
> 
> 
> Hi All:
> 
> 
> I have a very large table and the column type is text. I would like
> to convert in numeric. How can I find rows that dont have numbers. I
> would like to delete those rows.
> 
> 
> Thanks,
> -Suersh Raja


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