Proposal: new function array_init - Mailing list pgsql-hackers

From Pavel Stehule
Subject Proposal: new function array_init
Date
Msg-id 162867790806020903y32a90ec3s5635025c36f590a3@mail.gmail.com
Whole thread Raw
Responses Re: Proposal: new function array_init  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-hackers
Hello

There was more time questions about array's initialisation. I propose
function array_init.

CREATE OR REPLACE FUNCTION array_init(sizes int[], v anyelement)
RETURNS anyarray;

First parameter is array of dimension's sizes. Second argument is
value that will be used for initialisation.

Because pg array's indexes must not start from 1 we can allow specify it.

CREATE OR REPLACE FUNCTION array_init(sizes int[], lowers int[], v
anyelement) RETURNS anyarray;



select array_init(array[2],0);    array
---------------    {0,0}
(1 row)


select array_init(array[1,2], 0);    array
---------------{{0,0},{0,0}}
(1 row)

Any comments?

Regards
Pavel Stehule


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