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.
Andrus.
----- Original Message -----
From: "Tom Lane" <t...@sss.pgh.pa.us>
To: "Andrus" <kobrule...@hot.ee>
Cc: "Pavel Stehule" <pavel.steh...@gmail.com>;
<pgsql-general@postgresql.org>
Sent: Monday, March 29, 2010 6:00 PM
Subject: Re: [GENERAL] Splitting text column to multiple rows
"Andrus" <kobrule...@hot.ee> writes:
Pavel,
pa...@postgres:5481=# select unnest(string_to_array('23,2,3,4,5',','));
unnest
--------
23
2
3
4
(4 rows)
Result is wrong: it must contain 5 rows.
Surely that's a copy-and-paste mistake? I get 5 rows from this example.
regards, tom lane
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