If mysql.

If mysql Определение структуры данных Jun 15, 2016 · Isto é uma função quase igual ao que existe no Excel, ou como mais estamos acostumados na programação, funciona análogo a um operador condicional. Nov 23, 2021 · MySQL的if既可以作为表达式用，也可在存储过程中作为流程控制语句使用，如下是做为表达式使用： IF表达式 [sql] view plain copy IF(expr1,expr2,expr3) 如果 expr1 是TRUE (expr1 NULL)，则 IF()的返回值为expr2; 否则返回值则为 expr3。 Dec 15, 2012 · IF() in MySQL is a ternary function, not a control structure -- if the condition in the first argument is true, it returns the second argument; otherwise, it returns the third argument. See syntax, parameters, examples and important points about this control flow function. But I hope you got what I'm trying to achieve. En particular, la declaración IF, la condición es el criterio definido por el programador que necesita ser evaluado. mysql sql mysql select mysql where mysql and, or, not mysql order by mysql insert into mysql null values mysql update mysql delete mysql limit mysql min 和 max mysql count, avg, sum mysql like mysql 通配符 mysql in mysql between mysql 别名 mysql 联接 mysql inner join mysql left join mysql right join mysql cross join mysql 自联接 MySQL SQL MySQL SELECT MySQL WHERE MySQL AND, OR, NOT MySQL ORDER BY MySQL INSERT INTO MySQL NULL Values MySQL UPDATE MySQL DELETE MySQL LIMIT MySQL MIN and MAX MySQL COUNT, AVG, SUM MySQL LIKE MySQL Wildcards MySQL IN MySQL BETWEEN MySQL Aliases MySQL Joins MySQL INNER JOIN MySQL LEFT JOIN MySQL RIGHT JOIN MySQL CROSS JOIN MySQL Self Join Jul 21, 2019 · If anidado en MySQL. IF() 语法 这里是 MySQL IF() 函数的语法： The MySQL software delivers a very fast, multithreaded, multi-user, and robust SQL (Structured Query Language) database server. 7, if that matters) without the FROM DUAL. 99. 9. dtgft ynpkn afo vft zilinn tlzu uzpd ivu xrj oemq runpw hunnihd fglgdb esdslzy pkzdy