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Deleting partial data from a field in MySQL?
To delete partial data, use UPDATE command along with REPLACE(). Let us first create a table −
mysql> create table DemoTable1583 -> ( -> GameDetails text -> ); Query OK, 0 rows affected (1.38 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable1583 values('<GameName>=Candy</GameName>,<GamePrice>2000</GamePrice>');
Query OK, 1 row affected (0.53 sec)
mysql> insert into DemoTable1583 values('<GameName>=Lucky29</GameName>,<GamePrice>10000</GamePrice>');
Query OK, 1 row affected (0.25 sec)Display all records from the table using select statement −
mysql> select * from DemoTable1583;
This will produce the following output −
+------------------------------------------------------------+ | GameDetails | +------------------------------------------------------------+ | <GameName>=Candy</GameName>,<GamePrice>2000</GamePrice> | | <GameName>=Lucky29</GameName>,<GamePrice>10000</GamePrice> | +------------------------------------------------------------+ 2 rows in set (0.00 sec)
Here is the query to delete partial data from a field in MySQL −
mysql> update DemoTable1583 set GameDetails=replace(GameDetails,'<GameName>=Candy</GameName>',''); Query OK, 1 row affected (0.38 sec) Rows matched: 2 Changed: 1 Warnings: 0
Let us check the table records once again −
mysql> select * from DemoTable1583;
This will produce the following output −
+------------------------------------------------------------+ | GameDetails | +------------------------------------------------------------+ | ,<GamePrice>2000</GamePrice> | | <GameName>=Lucky29</GameName>,<GamePrice>10000</GamePrice> | +------------------------------------------------------------+ 2 rows in set (0.00 sec)
Updated on: 16-Dec-2019
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