Which MySQL Data Type can be used to store Negative Number?

You can use TINYINT data type in MySQL to store negative number. Following is the syntax −

CREATE TABLE yourTableName
   (

   yourColumnName TINYINT
   .
   .
   .
   .
   N
   );

Let us first create a table with a column set as type TINYINT −

mysql> create table DemoTable
   (

   Number tinyint
   );
Query OK, 0 rows affected (0.69 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable values(-10);
Query OK, 1 row affected (0.17 sec)

mysql> insert into DemoTable values(-128);
Query OK, 1 row affected (0.14 sec)

mysql> insert into DemoTable values(128);
ERROR 1264 (22003): Out of range value for column 'Number' at row 1

mysql> insert into DemoTable values(127);
Query OK, 1 row affected (0.23 sec)

mysql> insert into DemoTable values(-1);
Query OK, 1 row affected (0.14 sec)

mysql> insert into DemoTable values(14);
Query OK, 1 row affected (0.19 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable;

This will produce the following output −

+--------+
| Number |
+--------+
|    -10 |
|   -128 |
|    127 |
|     -1 |
|     14 |
+--------+
5 rows in set (0.00 sec)