On Mon, Jul 20, 2009 at 11:14:22PM -0400, Tom Lane wrote:
- David Kerr <d...@mr-paradox.net> writes:
- > But, i don't see any coded loop or way for me to insert a signal check.
(I'm not much of a
- > programmer) the function was just:
-
- > CREATE OR REPLACE FUNCTION array_median(anyarray)
- > RETURNS anyelement AS
- > $$
- > SELECT CASE
- > WHEN array_upper($1,1) = 0 THEN null
- > WHEN mod(array_upper($1,1),2) = 1 THEN
- > asorted[ceiling(array_upper(asorted,1)/2.0)]
- > ELSE
- > ((asorted[ceiling(array_upper(asorted,1)/2.0)] +
asorted[ceiling(array_upper(asorted,1)/2.0)+1])/2.0) END
- > FROM (SELECT ARRAY(SELECT ($1)[n] FROM
- > generate_series(1, array_upper($1, 1)) AS n
- > WHERE ($1)[n] IS NOT NULL
- > ORDER BY ($1)[n]
- > ) As asorted) As foo ;
- > $$
- > LANGUAGE 'sql' IMMUTABLE;
-
- Huh. How big an array were you trying to invoke it on?
-
- regards, tom lane
-
there are 899991 records in the table it's just
test=# \d test2
Table "public.test2"
Column | Type | Modifiers
--------+--------------+-----------
t1 | numeric(9,4) |
Thanks
Dave
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