Backend Types supported

This table give a comprehensive list of the SQL Types that are expected to be supported by the database backends. If the type is not supported then the backend will have to emulate the behavior described here.

The columns are in the following order:

• The SQL type [1] representing the field

• The python type expected on input

• The python type received on output

[1]

Corresponding to the SQL 92 standard or to a PostgreSQL type.

None will represent the NULL value and vice versa, it can be used as input or output for any SQL type.

SQL Type	Python input type	Python output type
BOOL	bool	bool
INTEGER	int	int
BIGINT	int / long [2]	int / long [2]
FLOAT	float / int / long [2]	float
NUMERIC	decimal.Decimal	decimal.Decimal
VARCHAR / VARCHAR(length)	str / unicode [3]	str / unicode [3]
TEXT	str / unicode [3]	str / unicode [3]
TIMESTAMP	datetime.datetime	datetime.datetime
DATETIME	datetime.datetime without microseconds [4]	datetime.datetime without microseconds [4]
DATE	datetime.date	datetime.date
TIME	datetime.time	datetime.time
INTERVAL	datetime.timedelta	datetime.timedelta
BLOB	bytes	bytes

[2] (1,2,3)

in python 2 integers over sys.maxint are represented by the long type

[3] (1,2,3,4)

str when using python 3 ; unicode when using python 2

[4] (1,2)

Datetime objects are not localized to any timezone