Question

I have 2 tables they are joined by ID’s, I know that there are some columns in Contract table whose data doesn’t match with my warranty table even when ID’s are matching. I am using the query below, does it look correct?

SELECT con.m_warranty_sku_id,
       con.contract_type,
       con.program_type,
       con.underwriter,
       wsk.m_warranty_sku_id,
       wsk.contract_type,
       wsk.program_type,
       wsk.sku_underwriter
FROM   mdhdba.m_contract con,
       mdhdba.m_warranty_sku wsk
WHERE  ( wsk.m_warranty_sku_id = con.m_warranty_sku_id )
       AND con.contract_type <> wsk.contract_type 

Answer 1

Yes it’s correct as solution, i adjusted your query in order to explicit my join

SELECT con.m_warranty_sku_id,
       con.contract_type,
       con.program_type,
       con.underwriter,
       wsk.m_warranty_sku_id,
       wsk.contract_type,
       wsk.program_type,
       wsk.sku_underwriter
FROM   mdhdba.m_contract con innerjoin mdhdba.m_warranty_sku wsk
ON wsk.m_warranty_sku_id = con.m_warranty_sku_id
WHERE  con.contract_type <> wsk.contract_type