Remove trailing numbers surrounded by parenthesis from a MySQL column

For this, use trim() along with substring(). Let us first create a table −

mysql> create table DemoTable
(
   Name varchar(100)
);
Query OK, 0 rows affected (0.80 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable values('1stJohn');
Query OK, 1 row affected (0.10 sec)
mysql> insert into DemoTable values('1stJohn (7)');
Query OK, 1 row affected (0.65 sec)
mysql> insert into DemoTable values('2ndSam');
Query OK, 1 row affected (0.12 sec)
mysql> insert into DemoTable values('2ndSam (4)');
Query OK, 1 row affected (0.15 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable;

This will produce the following output −

+-------------+
| Name        |
+-------------+
| 1stJohn     |
| 1stJohn (7) |
| 2ndSam      |
| 2ndSam (4)  |
+-------------+
4 rows in set (0.00 sec)

Following is the query to remove trailing numbers surrounded by parenthesis from a MySQL column −

mysql> select trim(substring(Name, 1, (CHAR_LENGTH(Name) - LOCATE('(', REVERSE(Name))))) AS RemovingTrailingNumbers from DemoTable;

This will produce the following output −

+-------------------------+
| RemovingTrailingNumbers |
+-------------------------+
| 1stJohn                 |
| 1stJohn                 |
| 2ndSam                  |
| 2ndSam                  |
+-------------------------+
4 rows in set (0.00 sec)