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[Source] SQL Server If Exists multi-condition judgment

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Posted on 4/30/2020 5:37:01 PM | | | |

Conditions are applied to the execution of Transact-SQL statements. If the condition is met, then execute the Transact-SQL statement immediately following the IF keyword and its condition: the boolean expression returns TRUE. The optional ELSE keyword introduces another Transact-SQL statement that executes when the IF condition is not met: the Boolean expression returns FALSE.



The effect is as follows:






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