Question : Oracle - replace union query

Is there any way we can use other statement to replace the query below?

Select 'mytext' as fieldB, count(distinct fieldA) from [mytable]
union Select 'mytext2' as fieldB, count(distinct fieldC) from [mytable]
Thanks

Answer : Oracle - replace union query

If you want your distinct counts to each show up on a different row,  you'll either need to do the union like you have, which I don't recommend because it's slow
or do a join like I have to a dummy table
or,  if you are on 11g you can try to use UNPIVOT.



none of them are complex.  but the union method is the least efficient.