(ops, sending to the pgsql-hackers, see the complete thread below)
Adding a formal suggestion after discussion: to include a fast
array_getarray() function!
CREATE FUNCTION array_getarray( m anyarray, idx int ) RETURNS anyarray AS
$f$
-- this is a slow workaround for an (need for) inter
Peter Krauss writes:
> I need to access an array-item from an array of arrays.
Multi-dimensional arrays in Postgres are not "arrays of arrays".
If you persist in thinking they are, it's mostly going to lead you
astray about what will work or not.
Having said that, you might find that plpgsql's
I need to access an array-item from an array of arrays. Suppose
WITH t AS (SELECT '{{1,2,3},{33,44,55}}'::int[][] as a)SELECT
a[2],-- returns null (!), why not works?
a[2:2], -- returns array-into-array, not a simple arrayFROM t;
There are a simple function or operator to acess i
