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Take off last character if a specific one exists in a string?
You can use trim() for this.Let us first create a table −
mysql> create table DemoTable ( UserId varchar(100) ); Query OK, 0 rows affected (0.63 sec)
Insert some records in the table using insert command. Here, we have added a question mark (?) to the end of some of the strings −
mysql> insert into DemoTable values('User123?');
Query OK, 1 row affected (0.18 sec)
mysql> insert into DemoTable values('User777');
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable values('User456');
Query OK, 1 row affected (0.15 sec)
mysql> insert into DemoTable values('User133?');
Query OK, 1 row affected (0.16 sec)Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+----------+ | UserId | +----------+ | User123? | | User777 | | User456 | | User133? | +----------+ 4 rows in set (0.00 sec)
Following is the query to take off last character if a certain one exists in a string i.e.? in this case −
mysql> select trim(trailing '?' from UserId) from DemoTable;
This will produce the following output −
+--------------------------------+ | trim(trailing '?' from UserId) | +--------------------------------+ | User123 | | User777 | | User456 | | User133 | +--------------------------------+ 4 rows in set (0.04 sec)
Updated on: 30-Jul-2019
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