MySQL query to update all records to capitalize only the first letter and set all others in lowercase

Let us first create a table −

mysql> create table DemoTable2017
   -> (
   -> Name text
   -> );
Query OK, 0 rows affected (0.55 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable2017 values('JOHN SMITH,MYSQL');
Query OK, 1 row affected (0.13 sec)

mysql> insert into DemoTable2017 values('DAVID MILLER,MONGODB');
Query OK, 1 row affected (0.12 sec)

mysql> insert into DemoTable2017 values('CHRIS BROWN,JAVA');
Query OK, 1 row affected (0.11 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable2017;

This will produce the following output −

+----------------------+
| Name                 |
+----------------------+
| JOHN SMITH,MYSQL     |
| DAVID MILLER,MONGODB |
| CHRIS BROWN,JAVA     |
+----------------------+
3 rows in set (0.00 sec)

Here is the query to set only the first letter in capital and rest in lower case −

mysql> update DemoTable2017
   -> set Name=REPLACE(CONCAT(UPPER(LEFT(Name, 1)), 
LOWER(SUBSTRING(Name, 2))),' , ', ', ');
Query OK, 3 rows affected (0.16 sec)
Rows matched: 3 Changed: 3 Warnings: 0

Let us check the table records once again −

mysql> select *from DemoTable2017;

This will produce the following output −

+----------------------+
| Name                 |
+----------------------+
| John smith,mysql     |
| David miller,mongodb |
| Chris brown,java     |
+----------------------+
3 rows in set (0.00 sec)