Field Name Problem In CI3

I've used

Code:

$this->db->query("SELECT [ID],[A],[B] FROM TABLE");

in my CI2 installation and all of my queries executed without problem. I'm using SQL Server 2012 and sqlsrv driver as database platform.

But when i try to upgrade my installation to CI3, bracketed fields generates error [XXX] field not found. When i remove bracket everything workes well again.

Why did you remove bracket support in CI3 or did i something wrong?

I'm a person from Turkiye. I don't know English very well and i can't write what i want to say sometimes (as now happenes   ).

If i write something by mistake; please don't distress it and try to understand what i want to write.