ENUM Type : ENUM « Data Types « MySQL Tutorial

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MySQL Tutorial » Data Types » ENUM 
10. 10. 1. ENUM Type

The ENUM type is an enumerated list.

A column can only store one of the values that are declared in the given list.

An ENUM is a string object with a value chosen from a list of values that are enumerated at table creation time.

An enumeration value must be a quoted string literal.

mysql>
mysql> CREATE TABLE Test(
    ->     NY ENUM('Y','N'DEFAULT 'N',
    ->     Size ENUM('S','M','L','XL','XXL'),
    ->     Color ENUM('Black','Red','White')
    -> );
Query OK, rows affected (0.02 sec)

mysql>
mysql> Insert into Test (NY, Size, Colorvalues ('Y','S','Black');
Query OK, row affected (0.02 sec)

mysql>
mysql> select from Test;
+------+------+-------+
| NY   | Size | Color |
+------+------+-------+
| Y    | S    | Black |
+------+------+-------+
row in set (0.00 sec)

mysql>
mysql> drop table Test;
Query OK, rows affected (0.00 sec)

mysql>
mysql>

You may have up to 65,535 items in your enumerated list.

An ENUM type must either contain a value from the list or NULL.

If you try to insert a value that is not in the list, a blank value will inserted.

10. 10. ENUM
10. 10. 1. ENUM Type
10. 10. 2. Possible value for a ENUM column
10. 10. 3. ENUM with default value
10. 10. 4. Use ENUM type column
10. 10. 5. Inserting data to ENUM type column
10. 10. 6. Use numeric operation in ENUM type column
10. 10. 7. If you retrieve an ENUM value in a numeric context, the column value's index is returned
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