在MySQL中将列值与单独的文本连接起来并显示在单个列中
让我们首先创建一个表-
mysql> create table DemoTable -> ( -> Id int, -> Name varchar(20) -> );
使用插入命令在表中插入一些记录-
mysql> insert into DemoTable values(101,'Chris'); mysql> insert into DemoTable values(102,'David'); mysql> insert into DemoTable values(103,'Robert');
使用select语句显示表中的所有记录-
mysql> select *from DemoTable;
+------+--------+ | Id | Name | +------+--------+ | 101 | Chris | | 102 | David | | 103 | Robert | +------+--------+ 3 rows in set (0.00 sec)
以下是MySQL查询，以使用单独的文本连接列值-
mysql> select concat('The student id and name is= ', Id , ',' , Name, ' .') from DemoTable;这将产生以下输出-
+---------------------------------------------------------------+
| concat('The student id and name is= ', Id , ',' , Name, ' .') |
+---------------------------------------------------------------+
| The student id and name is= 101,Chris . |
| The student id and name is= 102,David . |
| The student id and name is= 103,Robert . |
+---------------------------------------------------------------+
3 rows in set (0.01 sec)