t sql if else的相關文章
IF...ELSE (Transact-SQL)

IF...ELSE (Transact-SQL)

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日期:2025-06-13
Imposes conditions on the execution of a Transact-SQL statement. The Transact-SQL statement that follows an IF keyword and its condition is executed if the condition is satisfied: the Boolean expression returns TRUE. The optional ELSE keyword introduces ....看更多