Company
Maybank SQL questions
Retail-banking scenarios: accounts, transactions, branches and products. These reward careful joins to reference tables and correct handling of customers with no matching rows, which is where an INNER JOIN quietly deletes part of your answer.
mediumAbsolute difference and relative liftMaybank · experimentationFree→mediumEnforce uniqueness the way a UNIQUE constraint actually worksMaybank · indexingFree→mediumTotal spend per customerMaybank · joinsBasic→hardRank customers by spendMaybank · windowBasic→
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