How to get field name types from a MySQL database?

You can use INFORMATION_SCHEMA.COLUMNS for this. Following is the syntax −

SELECT COLUMN_NAME,COLUMN_TYPE FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME='yourTableName';

Let us first create a table −

mysql> create table DemoTable
   (
   Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,
   ClientName varchar(60),
   ClientAge int,
   ClientSalary DECIMAL(10,4),
   isRegularClient bool
   );
Query OK, 0 rows affected (0.44 sec)

Following is the query to get field name types from a SQL database −

mysql> SELECT COLUMN_NAME,COLUMN_TYPE FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME='DemoTable';

This will produce the following output −

+-----------------+---------------+
| COLUMN_NAME     | COLUMN_TYPE   |
+-----------------+---------------+
| Id              | int(11)       |
| ClientName      | varchar(60)   |
| ClientAge       | int(11)       | 
| ClientSalary    | decimal(10,4) |
| isRegularClient | tinyint(1)    |
+-----------------+---------------+
5 rows in set (0.02 sec)