mysql - Comparing Two Stored Procedures -

a beginner sql , have been asked prove 2 sql stored procs don't return same data.

i have run both queries , copied both reports excel file , used vlookup show id's in 1 report , not another.

one stored proc longer joining other tables , database. other simple select table in database.

i told go though procs piece piece , analyse differences , put report on why these procs don't return same data.

can offer me advice on way create report.