आइए पहले एक टेबल और इंडेक्स बनाते हैं:
mysql> create table DemoTable ( StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY, StudentFirstName varchar(20), StudentAge int, StudentCountryName varchar(100), INDEX first_Name_index(StudentFirstName) ); Query OK, 0 rows affected (1.01 sec)
टेबल का विवरण चेक करें:
mysql> desc DemoTable;
इससे निम्न आउटपुट प्राप्त होगा:
+--------------------+--------------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | +--------------------+--------------+------+-----+---------+----------------+ | StudentId | int(11) | NO | PRI | NULL | auto_increment | | StudentFirstName | varchar(20) | YES | MUL | NULL | | | StudentAge | int(11) | YES | | NULL | | | StudentCountryName | varchar(100) | YES | | NULL | | +--------------------+--------------+------+-----+---------+----------------+ 4 rows in set (0.00 sec)
