Обсуждение: how to get the size of array?

Hello,

Is there a way that I can get the size of one array ?

For example, create table test (id varchar[]);
insert into test values('{}');
insert into test values('{1, 2, 3}');

I am looking for something like :  select sizeOf(id) as size from test;


so that I can get results like:
size
-------
0
3

Thanks a lot,
Ying

Emi Lu <emilu@encs.concordia.ca> schrieb:

> Hello,
> 
> Is there a way that I can get the size of one array ?

Yes: http://www.postgresql.org/docs/8.1/interactive/functions-array.html

HTH, Andreas
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