How to search a word by capital or small letter in MySQL?

You can use BINARY along with the LIKE operator. Let us first create a table −

mysql> create table DemoTable
   (
   Header text
   );
Query OK, 0 rows affected (1.09 sec)

Insert records in the table using insert command −

mysql> insert into DemoTable values('Programming tutorials on MySQL');
Query OK, 1 row affected (0.11 sec)
mysql> insert into DemoTable values('programming in Java language');
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable values('Program in C language');
Query OK, 1 row affected (0.15 sec)
mysql> insert into DemoTable values('pRograMMing in Python language');
Query OK, 1 row affected (0.41 sec)

Display all records from the table using select statement −

mysql> select * from DemoTable;

This will produce the following output −

+--------------------------------+
| Header                         |
+--------------------------------+
| Programming tutorials on MySQL |
| programming in Java language   |
| Program in C language          |
| pRograMMing in Python language |
+--------------------------------+
4 rows in set (0.00 sec)

Following is the query to search a word by the small letter −

mysql> select * from DemoTable where binary Header like '%programming%';

This will produce the following output −

+------------------------------+
| Header                       |
+------------------------------+
| programming in Java language |
+------------------------------+
1 row in set (0.05 sec)

NOTE: If you want to search a word by a capital letter, you need to put the word in LIKE operator.