Question

I have a sample database:

Var1    Var2    Status
=========================
A1      SG1     Completed
A2      SG2     Completed
A2      SG1     Progress

Statuses can be as many as 10 different statuses.

I want to pull all the records only when all the rows’ Status is ‘Completed’. Meaning in this case no rows will be pulled. Only if all rows = ‘Completed’ then only it will pull the entire database.

How can I achieve this in lowest time?

Answer 1

select Var1, Var2, Status
from MyTable
where not exists (select 1 from MyTable where Status != 'Completed')

See SQLFiddle for demo