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CREATE TABLE table_name (column_name field_type [NULLNOT NULL],KEY col_index(column_name))

CREATE TABLE table_name (    column_name [NULL|NOT NULL][DEFAULT default_value] [AUTO_INCREMENT] [PRIMARY KEY] [reference definition]...); mysql> mysql> CREATE TABLE Employee (id int NOT NULL,KEY myIndex(id)); Query OK, 0 rows affected (0.03 sec) mysql> mysql> desc Employee; +-------+---------+------+-----+---------+-------+ | Field | Type    | Null | Key | Default | Extra | +-------+---------+------+-----+---------+-------+ | id    | int(11) | NO   | MUL |         |       | +-------+---------+------+-----+---------+-------+ 1 row in set (0.00 sec) mysql> mysql> show keys from Employee; +----------+------------+----------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+ | Table    | Non_unique | Key_name | Seq_in_index | Column_name | Collation | Cardinality | Sub_part | Packed | Null | Index_type | Comment | +----------+------------+----------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+ | Employee |          1 | myIndex  |            1 | id          | A         |        NULL |     NULL | NULL   |      | BTREE      |         | +----------+------------+----------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+ 1 row in set (0.00 sec) mysql> mysql> drop table Employee; Query OK, 0 rows affected (0.00 sec) mysql>