| Type | Use for | Size |
|---|---|---|
| TINYINT
| A very small integer
| 128 to 127. The unsigned range is 0 to 255.
|
| SMALLINT
| A small integer
| 32768 to 32767. The unsigned range is 0 to 65535
|
| MEDIUMINT
| A medium-size integer
| 8388608 to 8388607. The unsigned range is 0 to 16777215
|
| INT or INTEGER
| A normal-size integer
| 2147483648 to 2147483647. The unsigned range is 0 to 4294967295
|
| BIGINT
| A large integer
| 9223372036854775808 to 9223372036854775807. The unsigned range is 0 to
18446744073709551615
|
| FLOAT
| A small (single-precision) floating-point number. Cannot be unsigned
| 1.175494351E-38, 0 and 1.175494351E-38 to 3.402823466E+38.
If the number of decimals is not set or <= 24 it is a single-precision
floating point number
|
| DOUBLE,
DOUBLE PRECISION, REAL | A normal-size (double-precision) floating-point number. Cannot be unsigned
| Ranges are -1.7976931348623157E+308 to -2.2250738585072014E-308, 0 and
2.2250738585072014E-308 to 1.7976931348623157E+308. If the number of decimals is not
set or 25 <= Decimals <= 53 stands for a double-precision floating point number
|
| DECIMAL,
NUMERIC | An unpacked floating-point number. Cannot be unsigned
| means the number is stored as a string, using one character for each digit of
the value. The decimal point, and, for negative numbers, the sign is not counted in Length. If Decimals is 0, values will have no decimal
point or fractional part. The maximum range of DECIMAL values is the same as
for DOUBLE, but the actual range for a given DECIMAL column may be constrained by
the choice of Length and Decimals. If Decimals is left out its set to 10. Note that in MySQL 3.22 the Length includes the sign and the
decimal point
|
| DATE
| A date
| format
|
| DATETIME
| A date and time combination
| format
|
| TIMESTAMP
| A timestamp
| to sometime in the year 2037. MySQL displays TIMESTAMP values in
YYYYMMDDHHMMSS, YYMMDDHHMMSS, YYYYMMDD or YYMMDD format, depending on whether M is 14 (or
missing), 12, 8 or 6, but allows you to assign values to TIMESTAMP columns using
either strings or numbers. A TIMESTAMP column is useful for recording the date
and time of an INSERT or UPDATE operation because it is automatically set to
the date and time of the most recent operation if you dont give it a value yourself
|
| TIME
| A time
| format, but allows you to assign values to TIME columns using either strings
or numbers
|
| YEAR
| A year in 2- or 4- digit formats (default is 4-digit)
| The allowable values are 1901 to 2155, and 0000 in the 4 year format and
1970-2069 if you use the 2 digit format (70-69). MySQL displays YEAR values in YYYY
format, but allows you to assign values to YEAR columns using either strings or
numbers. (The YEAR type is new in MySQL 3.22.)
|
| CHAR
| A fixed-length string that is always right-padded with spaces to the specified
length when stored
| The range of Length is 1 to 255 characters. Trailing spaces are removed when
the value is retrieved. CHAR values are sorted and compared in case-insensitive
fashion according to the default character set unless the BINARY keyword is
given
|
| VARCHAR
| A variable-length string. Note: Trailing spaces are removed when the value is
stored (this differs from the ANSI SQL specification)
| The range of Length is 1 to 255 characters. VARCHAR values are sorted and
compared in case-insensitive fashion unless the BINARY keyword is given
|
| TINYBLOB,
TINYTEXT |
| A BLOB or TEXT column with a maximum length of 255 (2^8 - 1) characters
|
| BLOB,
TEXT |
| A BLOB or TEXT column with a maximum length of 65535 (2^16 - 1) characters
|
| MEDIUMBLOB,
MEDIUMTEXT |
| A BLOB or TEXT column with a maximum length of 16777215 (2^24 - 1) characters
|
| LONGBLOB,
LONGTEXT |
| A BLOB or TEXT column with a maximum length of 4294967295 (2^32 - 1) characters
|
| ENUM
| An enumeration
| , ..., or NULL. An ENUM can have a maximum of 65535 distinct values.
|
| SET
| A set
| A string object that can have zero or more values, each of which must be
chosen from the list of values , ... A SET can have a maximum of 64 members
|
Note: copied from MySQL Field Types for reference.
Created: Sunday, January 8, 2012