在MySQL中现有的int列的值中添加字符？
要将字符添加到现有的int列值中，请使用MySQLCONCAT()。让我们首先创建一个表-
mysql> create table DemoTable ( Amount int );
使用插入命令在表中插入一些记录-
mysql> insert into DemoTable values(709); mysql> insert into DemoTable values(34560); mysql> insert into DemoTable values(90854); mysql> insert into DemoTable values(3456);
使用select语句显示表中的所有记录-
mysql> select *from DemoTable;
这将产生以下输出-
+--------+ | Amount | +--------+ | 709 | | 34560 | | 90854 | | 3456 | +--------+ 4 rows in set (0.00 sec)
以下是在列值中添加字符的查询-
mysql> select concat('The Product Amount is=',Amount) AS AddingCharacters from DemoTable;这将产生以下输出-
+-----------------------------+ | AddingCharacters | +-----------------------------+ | The Product Amount is=709 | | The Product Amount is=34560 | | The Product Amount is=90854 | | The Product Amount is=3456 | +-----------------------------+ 4 rows in set (0.00 sec)