The Smart Guide to Building World-Class Applications
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SELECT empid, dt, qty, (SELECT SUM(S2.qty) FROM dbo.Sales AS S2 WHERE S2.empid = S1.empid AND S2.dt FROM dbo.Sales AS S1;
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Very good explanation about the details os SQL Server. I would love if the articles comes with a rate that indicate it's level, something simple like (begginer, intermediate, advanced) would be wonderful.Take Care!