CREATE TABLE table_name (column_name field_type [NULL|NOT NULL],KEY col_index(column_name)); : Create Table « Table « MySQL Tutorial

1. MySQL Tutorial
2. Table
3. Create Table

CREATE TABLE table_name (
   column_name [NULL|NOT NULL][DEFAULT default_value] [AUTO_INCREMENT] [PRIMARY KEY] [reference definition]...);

mysql>
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>
mysql>