Assume I have a table
t1 and two queries q1 and q2 on
SELECT xxx FROM t1 WHERE <condition-1>
SELECT xxx FROM t1 WHERE <condition-2>,
<condition-1> logically implies
<condition-1> is stricter than
<condition-2>, and the result set of q1 is a subset of that of q2)
Will the response time of q1 commonly (if ignore extreme cases) be shorter than that of q2?
This question may seem weird, the reason why I ask is I want to figure out some test oracle for the performance test. If the answer to the above question is true, that may serve as a test oracle.