concat_ws()是MySQL的一个字符串函数。此方法用于拼接多个字符串,它有一个分隔符参数,返回分隔符拼接的多个字符串。
语法
select concat_ws(separator,str1,str2,...);
参数
separator:分隔符
str1: 字符串1
str2:字符串2
示例 1
select concat_ws(',','Id','Password','Name');
输出:
mysql> select concat_ws(',','Id','Password','Name');
+---------------------------------------+
| concat_ws(',','Id','Password','Name') |
+---------------------------------------+
| Id,Password,Name |
+---------------------------------------+
1 row in set (0.00 sec)
示例 2
select concat_ws(',','Name','Class','School');
输出:
mysql> select concat_ws(',','Name','Class','School');
+----------------------------------------+
| concat_ws(',','Name','Class','School') |
+----------------------------------------+
| Name,Class,School |
+----------------------------------------+
1 row in set (0.00 sec)