Re: Splitting text column to multiple rows

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "Andrus" <kobruleht2(at)hot(dot)ee>
Cc: "Pavel Stehule" <pavel(dot)stehule(at)gmail(dot)com>, pgsql-general(at)postgresql(dot)org
Subject: Re: Splitting text column to multiple rows
Date: 2010-03-29 15:17:12
Message-ID: 13518.1269875832@sss.pgh.pa.us
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"Andrus" <kobruleht2(at)hot(dot)ee> writes:
> I changed unction name and tried:
> CREATE OR REPLACE FUNCTION unnest21(anyarray)
> RETURNS SETOF anyelement as $$
> SELECT $1[i] FROM generate_series(1,4) g(i)
> $$ LANGUAGE sql;

> select unnest21(string_to_array('23,2,3,4,5',','));

> In this case it returns only 4 rows.
> No idea what is happening.

Well, the generate_series call is wrong for this use ...

I think if it appeared to work before it was because the built-in
unnest() function was capturing the call.

regards, tom lane

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