Display information about field names in MySQL including TYPE, KEY, etc.

MySQLMySQLi Database

To display information about field names, the syntax is as follows −

show columns from yourTableName;

Let us first create a table −

mysql> create table DemoTable1586
   -> (
   -> EmployeeId int,
   -> EmployeeFirstName varchar(20),
   -> EmployeeLastName varchar(20),
   -> EmployeeAge int,
   -> EmployeeCountryName varchar(20),
   -> EmployeeSalary int
   -> );
Query OK, 0 rows affected (0.78 sec)

Following is the query to display field names −

mysql> show columns from DemoTable1586;

This will produce the following output −

+---------------------+-------------+------+-----+---------+-------+
| Field               | Type        | Null | Key | Default | Extra |
+---------------------+-------------+------+-----+---------+-------+
| EmployeeId          | int(11)     |  YES |     | NULL    |       |
| EmployeeFirstName   | varchar(20) |  YES |     | NULL    |       |
| EmployeeLastName    | varchar(20) |  YES |     | NULL    |       |
| EmployeeAge         | int(11)     |  YES |     | NULL    |       |
| EmployeeCountryName | varchar(20) |  YES |     | NULL    |       |
| EmployeeSalary      | int(11)     |  YES |     | NULL    |       |
+---------------------+-------------+------+-----+---------+-------+
6 rows in set (0.11 sec)
raja
Published on 16-Dec-2019 06:38:33
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