Nullsif ? PG 9.1

2017-04-09 20:18 GMT+12:00 Patrick B <patrickbakerbr@gmail.com>:

Hi guys,

I've got this select:
SELECT split_part(n.node_full_path::text, '/'::text, 8)::integer AS id,

However, not always I will get the 8th field, and because of that, i may
get no data somethings.

Example:
/filesuser/client/27801123/attachment/4510/main
/filesuser/client/1111/attachment/21314134/file/12312312312
<(231)%20231-2312>/small/photo.jpg

Note that, sometimes it only goes until the 7th splitted_part, not always
i will get the 8th.

How can I tell the select, if no 8th field is found, then returns null?

Thanks!
Patrick

Sorry guys.. Got it!
https://www.postgresql.org/docs/9.1/static/functions-conditional.html