Split a string to rows?

From: Emi Lu <emilu(at)encs(dot)concordia(dot)ca>
To: pgsql-sql(at)postgresql(dot)org
Subject: Split a string to rows?
Date: 2013-01-07 19:44:53
Message-ID: 50EB25B5.5020502@encs.concordia.ca
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Hello,

Is there a function to split a string to different rows?

For example, t1(id, col1)
values(1, 'a, b, c');

select id, string_split_to_row(col1, ',');

Return:
=========
1, a
1, b
1, c

Thanks alot!
Emi

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