MySQL in int (11)

As an extension of the SQL standard, MySQL also supports integer types tinyint, Mediumint, and bigint. MySQL int (m), m indicates that the display width is independent of storage, and int is 4 bytes.

The signed int of the MySQL database can save 2^31-1~-2^31-1, turn to decimal is a number with 10 digits, int (11) can display a maximum of 10 negative numbers, if the positive number is displayed up to 10 bits, because the signed int can only save 10 bits (literal display length)

MySQL in int (11)