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MySQL find/ replace string in fields?
To find/replace string in fields, the syntax is as follows −
update yourTableName set yourColumnName =REPLACE(yourColumnName,yourOldValue,yourNewValue);
To understand the above syntax, let us create a table. The query to create a table is as follows −
mysql> create table FindReplaceDemo -> ( -> FileId int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> FileDirectory text -> ); Query OK, 0 rows affected (0.92 sec)
Now you can insert some records in the table using insert command. The query is as follows −
mysql> insert into FindReplaceDemo(FileDirectory) values('C://User//MySQL');
Query OK, 1 row affected (0.19 sec)
mysql> insert into FindReplaceDemo(FileDirectory) values('D://WebsiteImage//image1.jpg');
Query OK, 1 row affected (0.12 sec)
mysql> insert into FindReplaceDemo(FileDirectory) values('E://Java//AdvancedJava');
Query OK, 1 row affected (0.20 sec)Display all records from the table using select statement. The query is as follows −
mysql> select *from FindReplaceDemo;
Here is the output −
+--------+------------------------------+ | FileId | FileDirectory | +--------+------------------------------+ | 1 | C://User//MySQL | | 2 | D://WebsiteImage//image1.jpg | | 3 | E://Java//AdvancedJava | +--------+------------------------------+ 3 rows in set (0.00 sec)
Here is the query to find/replace string in fields −
mysql> update FindReplaceDemo -> set FileDirectory =REPLACE(FileDirectory,'E://Java//AdvancedJava','E://Java//SpringAndHibernateFramework'); Query OK, 1 row affected (0.12 sec) Rows matched: 3 Changed: 1 Warnings: 0
Now let us check the table records once again. The query is as follows −
mysql> select *from FindReplaceDemo;
The output is as follows with replaced values −
+--------+---------------------------------------+ | FileId | FileDirectory | +--------+---------------------------------------+ | 1 | C://User//MySQL | | 2 | D://WebsiteImage//image1.jpg | | 3 | E://Java//SpringAndHibernateFramework | +--------+---------------------------------------+ 3 rows in set (0.00 sec)
Updated on: 30-Jul-2019
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