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Use TRIM on all records in a MySQL table?
TRIM is used to remove leading and trailing spaces. Let us first create a table −
mysql> create table DemoTable ( StudentName varchar(100) ); Query OK, 0 rows affected (0.64 sec)
Insert some records in the table using insert command. Here, we have inserted records with leading and trailing whitespaces −
mysql> insert into DemoTable values(' Adam Smith ');
Query OK, 1 row affected (0.19 sec)
mysql> insert into DemoTable values(' David Miller ');
Query OK, 1 row affected (0.10 sec)
mysql> insert into DemoTable values(' Chris Brown ');
Query OK, 1 row affected (0.15 sec)
mysql> insert into DemoTable values(' Carol Taylor ');
Query OK, 1 row affected (0.10 sec)Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+-----------------------------------+ | StudentName | +-----------------------------------+ | Adam Smith | David Miller | | Chris Brown | | Carol Taylor | +-----------------------------------+ 4 rows in set (0.00 sec)
Following is the query to trim all records in a MySQL table −
mysql> update DemoTable set StudentName=trim(StudentName); Query OK, 4 rows affected (0.24 sec) Rows matched: 4 Changed: 4 Warnings: 0
Let us check the table records once again −
mysql> select *from DemoTable;
This will produce the following output. All the leading and trailing whitespaces are now removed successfully using TRIM() &minuss;
+-----------------+ | StudentName | +-----------------+ | Adam Smith | | David Miller | | Chris Brown | | Carol Taylor | +-----------------+ 4 rows in set (0.00 sec)
Updated on: 25-Sep-2019
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