SQL Snippets: Case When Statements

5/24/2018 2132 Contributors
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Stephanie and Lex introduce 'CASE WHEN' statements, SQL's method of managing IF/THEN logic based on conditional statements. For any row, if the conditional statements are met, the output is given by the 'THEN' command. The 'UNION' operator is included in the query to integrate all rows in the result sets of two queries in this example.