select FIND_IN_SET('11','101,201,311') > 0 from dual 0
GCT1015 MySQL函数find_in_set()只能在一组字符串中搜索一个字符串。第一个参数是一个字符串,因此没有办法使它用逗号分隔的字符串解析为字符串(根本不能在SET元素中使用逗号!)。第二个参数是SET,它依次由逗号分隔的字符串表示,因此您希望find_in_set('a,b,c', 'a,b,c,d')可以正常使用,但'a,b,c'...
这个问题是由于我们传入的参数“ExtUserIds”是一个字符串,sql语句中的IN只能使用字符串中第一个逗号前的数据,所以在上面的例子中,只删除了2号用户的数据。 正确的方式: 当然,我们可以将字符串“ExtUserIds”按逗号分开,然后循环删除信息,但是这么做会增加不少的逻辑处理。 现在我们不使用“IN”而使用“FIND_IN_...
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Subject Written By Posted Find string in dictionary simon templar November 01, 2020 05:33PM Re: Find string in dictionary Peter Brawley November 02, 2020 10:05AM Sorry, you can't reply to this topic. It has been closed.
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find_in_set函数,find_in_set(str1,str2)函数是返回str2中str1所在的位置索引,str2必须以","分割开。 执行更新:使用CONCAT函数 语法: 1. CONCAT(string1,string2,…) 说明 : string1,string2代表字符串,concat函数在连接字符串的时候,只要其中一个是NULL,那么将返回NULL ...
MySQL 手册中 find_in_set 函数的语法: FIND_IN_SET(str,strlist) str 要查询的字符串 \ strlist 字段名 参数以”,” 分隔 如 (1,2,6,8)\ 查询字段 (strlist) 中包含 (str) 的结果,返回结果为 null 或记录 假如字符串 str 在由 N 个子链组成的字符串列表 strlist 中,则返回值的范围在 1 到...