Data Type Conversion

Python 3

Python Parameters Sent to the Database
The following table explains how Python objects passed to Cursor.execute() as parameters are formatted and sent to the driver/database.

Description	Python Datatype	ODBC Datatype
null	None	SQL_VARCHAR
boolean	bool	BIT
integer	int	SQL_TINYINT, SQL_SMALLINT, SQL_INTEGER, SQL_BIGINT
floating point	float	SQL_DOUBLE
decimal	decimal.Decimal	SQL_NUMERIC
string	str	SQL_VARCHAR or SQL_LONGVARCHAR
binary	bytes, bytearray	SQL_BINARY or SQL_VARBINARY
date	datetime.date	SQL_TYPE_DATE
time	datetime.time	SQL_TYPE_TIME
timestamp	datetime.datetime	SQL_TYPE_TIMESTAMP
UUID / GUID	uuid.UUID	SQL_GUID

SQL Values Received from the Database
The following table describes how database results are converted to Python objects.

Description	ODBC Datatype	Python Datatype
NULL	any	None
bit	SQL_BIT	bool
integers	SQL_TINYINT, SQL_SMALLINT, SQL_INTEGER, SQL_BIGINT	int
floating point	SQL_REAL, SQL_FLOAT, SQL_DOUBLE	float
decimal, numeric	SQL_DECIMAL, SQL_NUMERIC	decimal.Decimal
1-byte text	SQL_CHAR	str via UTF-8
2-byte text	SQL_WCHAR	str via UTF-16LE
binary	SQL_BINARY, SQL_VARBINARY	bytes
date	SQL_TYPE_DATE	datetime.date
time	SQL_TYPE_TIME	datetime.time
timestamp	SQL_TIMESTAMP	datetime.datetime
UUID / GUID	SQL_GUID	str or uuid.UUID