From: | Raymond O'Donnell <rod(at)iol(dot)ie> |
---|---|
To: | Suresh Raja <suresh(dot)rajaabc(at)gmail(dot)com>, pgsql-general(at)postgresql(dot)org, pgsql-sql(at)postgresql(dot)org |
Subject: | Re: check data for datatype |
Date: | 2015-03-27 18:14:50 |
Message-ID: | 55159E1A.3050608@iol.ie |
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Lists: | pgsql-general pgsql-sql |
On 27/03/2015 18:08, Suresh Raja wrote:
> 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.
Use a regular expression:
select <whatever> from <the table> where <the column> ~ <regexp>
http://www.postgresql.org/docs/9.4/static/functions-matching.html#FUNCTIONS-POSIX-REGEXP
HTH,
Ray.
--
Raymond O'Donnell :: Galway :: Ireland
rod(at)iol(dot)ie
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