SELECT Statements Resources

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UNION vs UNION ALL in SQL Server7/24/2024 9:28:49 AM. The SQL UNION operator combines the results of two or more SELECT statements, removing duplicate rows. In contrast, UNION ALL combines results while retaining all duplicates. UNION may impact performa
A Database Access Class with Overloaded SELECT Statements12/19/2005 2:23:21 AM. A useful database access class with overloaded SELECT and other statements.