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Update a column in MySQL and remove the trailing underscore values
To remove the trailing values, use TRIM() as in the below update syntax −
update yourTableName set yourColumnName=trim(trailing '_' from yourColumnName);
Let us first create a table −
mysql> create table DemoTable1521 -> ( -> StudentCode varchar(20) -> ); Query OK, 0 rows affected (1.33 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable1521 values('345_');
Query OK, 1 row affected (0.19 sec)
mysql> insert into DemoTable1521 values('12345');
Query OK, 1 row affected (0.38 sec)
mysql> insert into DemoTable1521 values('9084_');
Query OK, 1 row affected (1.29 sec)Display all records from the table using select statement −
mysql> select * from DemoTable1521;
This will produce the following output −
+-------------+ | StudentCode | +-------------+ | 345_ | | 12345 | | 9084_ | +-------------+ 3 rows in set (0.00 sec)
Here is the query to update column in MySQL and trim −
mysql> update DemoTable1521 -> set StudentCode=trim(trailing '_' from StudentCode); Query OK, 2 rows affected (0.34 sec) Rows matched: 3 Changed: 2 Warnings: 0
Let us check the table records once again −
mysql> select * from DemoTable1521;
This will produce the following output −
+-------------+ | StudentCode | +-------------+ | 345 | | 12345 | | 9084 | +-------------+ 3 rows in set (0.00 sec)
Updated on: 11-Dec-2019
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