SQL CASE works in practically all SQL-Databases
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CASE statement in SQL
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SQL ISNULL function
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SQL CASE Statement: When and How To Use It
CASE Statement in SQL Examples
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ISNULL SQL Function In Case Statements
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T-SQL: Simplified CASE expression - TechNet Articles - United States (English) - TechNet Wiki
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ISNULL SQL Function In Case Statements
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