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日期:2025-04-28
The IF statement can have THEN , ELSE , and ELSEIF clauses, and it is terminated with ... Each statement_list consists of one or more SQL statements; an empty ......
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日期:2025-04-28
If there was no matching result value, the result after ELSE is returned, or NULL ... that of the SQL CASE statement described in Section 13.6.5.1, “CASE Syntax”, ......
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日期:2025-04-23
If there was no matching result value, the result after ELSE is returned, or NULL ... that of the SQL CASE statement described in Section 13.6.5.1, “CASE Syntax”, ......
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日期:2025-04-30
The IF statement can have THEN , ELSE , and ELSEIF clauses, and it is terminated with ... Each statement_list consists of one or more SQL statements; an empty ......
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日期:2025-04-23
The MySQL IF statement allows you to execute a set of SQL statements based on a certain condition or value of an expression. To form an expression in MySQL, ......
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日期:2025-04-26
This tutorial shows you how to use the MySQL IF function to return a value based on a ... The IF function is sometimes referred as IF ELSE or IF THEN ELSE function. .... Our MySQL tutorials are practical and easy-to-follow, with SQL script and ......
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日期:2025-04-26
This MySQL tutorial explains how to use the IF-THEN-ELSE statement in MySQL with syntax and examples. In MySQL, the IF-THEN-ELSE statement is used to ......
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日期:2025-04-27
MySQL IF() takes three expressions and if the first expression is true, not ... SELECT IF((SELECT CASE WHEN 1>0 THEN 'true' ELSE 'false' END),'true','false' );....