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Daily Develope
[DB] EXISTS / IN / JOIN 비교
EXISTS ㅇ 예시코드 SELECT I.InvoiceID, I.TotalDryItems, People.FullName FROM Sales.Invoices I INNER JOIN [Application].People ON I.SalespersonPersonID = People.PersonID WHERE EXISTS (SELECT 1 FROM vTop3SPs2013Q2 WHERE SalespersonPersonID = I.SalespersonPersonID) AND I.InvoiceDate BETWEEN '4/1/2013' AND '6/30/2013' AND I.TotalDryItems >= 4; ㅇ 장점 구현이 쉽고, 가독성이 좋음 조건에 해당하는 데이터가 있으면 검사 종료 (IN / JOIN 은 전체 ..
DB
2022. 6. 23. 09:00