I have a table which has the following.

```
 fieldmapid | fieldid
------------+---------
       2010 |     180
       2012 |      90
       2012 |      92
       2020 |      90
       2020 |      92
       2020 |      95
       20005 |      90
       20005 |      92

```

I want to write a query which first gets the fieldid's of the fieldmapid(assume it's 2012). And then i want to select the fieldmapid's which have the same fieldid's as the ones in 2012. That means, I need fieldmapid's which have only 90 and 92 as their fieldid's and nothing else. so i want 20005 and 2012 as the output of the query. because these are the only two fieldmapid's which have only 90 and 92 as their fieldid's.