从MySQL中的字段中删除部分数据？

要删除部分数据，请与一起使用UPDATE命令REPLACE()。让我们首先创建一个表-

mysql> create table DemoTable1583
   -> (
   -> GameDetails text
   -> );

使用插入命令在表中插入一些记录-

mysql> insert into DemoTable1583 values('<GameName>=Candy</GameName>,<GamePrice>2000</GamePrice>');
mysql> insert into DemoTable1583 values('<GameName>=Lucky29</GameName>,<GamePrice>10000</GamePrice>');

使用select语句显示表中的所有记录-

mysql> select * from DemoTable1583;

这将产生以下输出-

+------------------------------------------------------------+
| GameDetails                                                |
+------------------------------------------------------------+
| <GameName>=Candy</GameName>,<GamePrice>2000</GamePrice>    |
| <GameName>=Lucky29</GameName>,<GamePrice>10000</GamePrice> |
+------------------------------------------------------------+
2 rows in set (0.00 sec)

这是从MySQL的字段中删除部分数据的查询-

mysql> update DemoTable1583 set GameDetails=replace(GameDetails,'<GameName>=Candy</GameName>','');
Rows matched: 2  Changed: 1 Warnings: 0

让我们再次检查表记录-

mysql> select * from DemoTable1583;

这将产生以下输出-

+------------------------------------------------------------+
| GameDetails                                                |
+------------------------------------------------------------+
| ,<GamePrice>2000</GamePrice>                               |
| <GameName>=Lucky29</GameName>,<GamePrice>10000</GamePrice> |
+------------------------------------------------------------+
2 rows in set (0.00 sec)