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How do I change the case on every field in a MySQL table in a single call?
You can use update along with lower() function for this. Let us first create a table −
mysql> create table DemoTable ( Id varchar(100), StudentFirstName varchar(20), StudentLastName varchar(20), StudentCountryName varchar(10) ); Query OK, 0 rows affected (0.61 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values('STU-101','John','Smith','US');
Query OK, 1 row affected (0.59 sec)
mysql> insert into DemoTable values('STU-102','John','Doe','UK');
Query OK, 1 row affected (0.15 sec)
mysql> insert into DemoTable values('STU-103','David','Miller','AUS');
Query OK, 1 row affected (0.19 sec)Following is the query to display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+---------+------------------+-----------------+--------------------+ | Id | StudentFirstName | StudentLastName | StudentCountryName | +---------+------------------+-----------------+--------------------+ | STU-101 | John | Smith | US | | STU-102 | John | Doe | UK | | STU-103 | David | Miller | AUS | +---------+------------------+-----------------+--------------------+ 3 rows in set (0.00 sec)
Here is the query to change the case on every field in a MySQL table in a single call.
mysql> update DemoTable set Id=lower(Id), StudentFirstName=lower(StudentFirstName), StudentLastName=lower(StudentLastName), StudentCountryName=lower(StudentCountryName); Query OK, 3 rows affected (0.22 sec) Rows matched : 3 Changed : 3 Warnings : 0
Display all records from the table using select statement to check the changes done in the above query −
mysql> select *from DemoTable;
This will produce the following output −
+---------+------------------+-----------------+--------------------+ | Id | StudentFirstName | StudentLastName | StudentCountryName | +---------+------------------+-----------------+--------------------+ | stu-101 | john | smith | us | | stu-102 | john | doe | uk | | stu-103 | david | miller | aus | +---------+------------------+-----------------+--------------------+ 3 rows in set (0.00 sec)
Updated on: 30-Jul-2019
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