Find and Replace text in the entire table using a MySQL?

MySQLMySQLi Database

The text can be found and replaced with the help of the replace() function. It is explained with the help of the following steps −

First, a table is created with the help of the create command which is given as follows −

mysql> CREATE table FindAndReplaceDemo
-> (
-> FirstName varchar(200)
-> );
Query OK, 0 rows affected (0.43 sec)

After creating the above table, the records are inserted with the help of the insert command. This is given below −

mysql> INSERT into FindAndReplaceDemo values('john');
Query OK, 1 row affected (0.15 sec)

mysql> INSERT into FindAndReplaceDemo values('smith');
Query OK, 1 row affected (0.17 sec)

mysql> INSERT into FindAndReplaceDemo values('Bob');
Query OK, 1 row affected (0.12 sec)

mysql> INSERT into FindAndReplaceDemo values('carol');
Query OK, 1 row affected (0.18 sec)

All the records can be displayed with the help of the select statement which is given as follows −

mysql> SELECT * from FindAndReplaceDemo;

The following is the output obtaine

+-----------+
| FirstName |
+-----------+
| john      |
| smith     |
| Bob       |
| carol     |
+-----------+
4 rows in set (0.00 sec)

Now, the name Carol is replaced with Taylor with the help of the replace function. The syntax for that is given below −

UPDATE yourTableName SET column_name= replace(column_name, 'Old_Value', 'New_Value');

The query using the above syntax is given as follows −

mysql> UPDATE FindAndReplaceDemo SET FirstName = replace(FirstName, 'carol', 'Taylor');
Query OK, 1 row affected (0.14 sec)
Rows matched: 4 Changed: 1 Warnings: 0

The contents of the table can be viewed again with the help of the SELECT statement. This is given below −

mysql> SELECT * from FindAndReplaceDemo;

The following is the output obtained

+-----------+
| FirstName |
+-----------+
| john      |
| smith     |
| Bob       |
| Taylor    |
+-----------+
4 rows in set (0.00 sec)

As can be seen with the above output, Carol is replaced with Taylor.

raja
Published on 22-Oct-2018 08:59:53
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