I have the following snippet of a table that I am trying to filter some identities for:

 id     fid              ts               val
44292   1243    2014-12-15 00:00:00.000   True
44292   1243    2017-02-02 00:00:00.000   False
44292   1250    2014-12-16 00:00:00.000   ABC
44293   1243    2014-12-15 00:00:00.000   True
44293   1243    2017-02-02 00:00:00.000   False
44293   1250    2014-12-16 00:00:00.000   KKK
44294   1243    2014-12-15 00:00:00.000   True
44294   1243    2017-02-02 00:00:00.000   False
44295   1243    2014-12-15 00:00:00.000   True
44295   1243    2017-02-02 00:00:00.000   False

What I am trying to do is to filter for id’s that do not have a row for fid = 1250.
So in the above example, we have id’s 44292, 44293, 44294, 44295, of which only the first two id’s have a row with fid=1250, whereas id 44294, 44295 do not have such a row.

So I would like to simply return id’s 44292, 44293; is this possible?