第一次写MySQL FUNCTION，一直报错，
Err] 1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '`company_id` int) RETURNS varchar(20) CHARSET utf8
BEGIN
本来的函数：
CREATE DEFINER=`33323`@`%` FUNCTION `createSaleCode`(`benginStr` varchar,`company_id` int) RETURNS varchar(20) CHARSET utf8 BEGIN DECLARE nearnum VARCHAR(20); DECLARE nowdatepre VARCHAR(20); DECLARE numout VARCHAR(20); SELECT a.sale_code INTO nearnum FROM d_sale a WHERE a.company_id = company_id ORDER BY a.sale_id DESC limit 1; SELECT concat(extract(year_month from now()),LPAD(extract(day from now()), 2, 0)) INTO nowdatepre; IF locate(nowdatepre,nearnum)>0 THEN set numout = nearnum +1; ELSE set numout = concat(beginStr,nowdatepre,'00001'); END IF; RETURN numout; END
这段函数在Navicat上边执行不起来，在多次尝试之后将代码修改为以下：
delimiter $$ CREATE DEFINER=`12212`@`%` FUNCTION createSaleCode(benginStr varchar(20),company_id int(11) ) RETURNS varchar(20) CHARSET utf8 BEGIN DECLARE nearnum VARCHAR(20); DECLARE nowdatepre VARCHAR(20); DECLARE numout VARCHAR(20); SELECT a.sale_code INTO nearnum FROM d_sale a WHERE a.company_id = company_id ORDER BY a.sale_id DESC limit 1; SELECT concat(extract(year_month from now()),LPAD(extract(day from now()), 2, 0)) INTO nowdatepre; IF locate(nowdatepre,nearnum)>0 THEN set numout = nearnum +1; ELSE set numout = concat(beginStr,nowdatepre,'00001'); END IF; RETURN numout; END$$ delimiter ;
问题解决。
默认情况下，delimiter是分号;。
总结
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