Subject: Re: Split a string to rows?
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From: "Jonathan S. Katz" <jonathan.katz@excoventures.com>
In-Reply-To: <50EB25B5.5020502@encs.concordia.ca>
Date: Mon, 7 Jan 2013 14:58:57 -0500
Cc: pgsql-sql@postgresql.org
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References: <50EB25B5.5020502@encs.concordia.ca>
To: emilu@encs.concordia.ca
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On Jan 7, 2013, at 2:44 PM, Emi Lu wrote:

> Hello,
>=20
> Is there a function to split a string to different rows?
>=20
> For example, t1(id, col1)
> values(1, 'a, b, c');
>=20
> select id, string_split_to_row(col1, ',');
>=20
> Return:
> =3D=3D=3D=3D=3D=3D=3D=3D=3D
> 1, a
> 1, b
> 1, c


You can probably use some combination of "string_to_array" and "unnest"

e.g.

SELECT unnest(string_to_array('a,b,c', ','));

 unnest=20
--------
 a
 b
 c
(3 rows)

If you need a more complex string splitting mechanism, there is the "regexp=
_split_to_array" function.

Jonathan

--=20
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