我们如何组合MySQL表中两列或多列的值？
对于合并MySQL表的两个或多个列的值，我们可以使用CONCAT()字符串函数。基本上，MySQL CONCAT()函数用于合并两个或多个字符串。
语法
CONCAT(String1,String2,…,StringN)登录后复制
示例
mysql> select CONCAT('Ram','is','a','good','boy') AS Remarks; +---------------+ | Remarks | +---------------+ | Ramisagoodboy | +---------------+ 1 row in set (0.00 sec)登录后复制
mysql> Select Id, Name, Address, CONCAT(ID,', ',Name,', ', Address)AS 'ID, Name, Address' from Student; +------+---------+---------+--------------------+ | Id | Name | Address | ID, Name, Address | +------+---------+---------+--------------------+ | 1 | Gaurav | Delhi | 1, Gaurav, Delhi | | 2 | Aarav | Mumbai | 2, Aarav, Mumbai | | 15 | Harshit | Delhi | 15, Harshit, Delhi | | 20 | Gaurav | Jaipur | 20, Gaurav, Jaipur | +------+---------+---------+--------------------+ 4 rows in set (0.00 sec)登录后复制
