MEDIUMINT

Syntax

MEDIUMINT[(M)] [UNSIGNED] [ZEROFILL]

Description

Un entier (integer) moyen. L'intervalle de validité est de -8388608 à 8388607. En version non signée (unsigned) l'intervalle est de 0 à 16777215.

La clause ZEROFILL complète le nombre avec des zéros et le converti implicitement en nombre non signé (même si la clause UNSIGNED n'est pas spécifiée).

Exemples

CREATE TABLE mediumints (a MEDIUMINT,b MEDIUMINT UNSIGNED,c MEDIUMINT ZEROFILL);

DESCRIBE mediumints;
+-------+--------------------------------+------+-----+---------+-------+
| Field | Type                           | Null | Key | Default | Extra |
+-------+--------------------------------+------+-----+---------+-------+
| a     | mediumint(9)                   | YES  |     | NULL    |       |
| b     | mediumint(8) unsigned          | YES  |     | NULL    |       |
| c     | mediumint(8) unsigned zerofill | YES  |     | NULL    |       |
+-------+--------------------------------+------+-----+---------+-------+

INSERT INTO mediumints VALUES (-10,-10,-10);
ERROR 1264 (22003): Out of range value for column 'b' at row 1

INSERT INTO mediumints VALUES (-10,10,-10);
ERROR 1264 (22003): Out of range value for column 'c' at row 1

INSERT INTO mediumints VALUES (-10,10,10);
Query OK, 1 row affected (0.14 sec)

INSERT INTO mediumints VALUES (8388608,8388608,8388608);
ERROR 1264 (22003): Out of range value for column 'a' at row 1

INSERT INTO mediumints VALUES (8388607,8388608,8388608);
Query OK, 1 row affected (0.13 sec)

SELECT * FROM mediumints;
+---------+---------+----------+
| a       | b       | c        |
+---------+---------+----------+
|     -10 |      10 | 00000010 |
| 8388607 | 8388608 | 08388608 |
+---------+---------+----------+