Active Record substring problem

[eluser]webb_design[/eluser]
Got a workaround for now. When I use aliases of SUBSTRING (SUBSTR and MID), CI doesn't remove them. Here's what I did instead:

Code:

$this->db->select("CONCAT_WS('-', SUBSTRING(test, 1, 5), SUBSTR(test, 6, 10)) AS testing");

But... this is a pretty dumb hack. Does anyone know why CI is removing the multiple SUBSTRINGs? It almost seems like it's trying to combine them together. I tried overloading the select() method with FALSE to disable escaping but that didn't help.

Thanks.