Data Types

Databend is capable of handling both general and semi-structured data types.

General Data Types

Data Type	Alias	Storage Size	Min Value	Max Value
BOOLEAN	BOOL	1 byte	N/A	N/A
TINYINT	INT8	1 byte	-128	127
SMALLINT	INT16	2 bytes	-32768	32767
INT	INT32	4 bytes	-2147483648	2147483647
BIGINT	INT64	8 bytes	-9223372036854775808	9223372036854775807
FLOAT	N/A	4 bytes	-3.40282347e+38	3.40282347e+38
DOUBLE	N/A	8 bytes	-1.7976931348623157E+308	1.7976931348623157E+308
DECIMAL	N/A	16/32 bytes	-10^P / 10^S	10^P / 10^S
DATE	N/A	4 bytes	1000-01-01	9999-12-31
TIMESTAMP	N/A	8 bytes	0001-01-01 00:00:00	9999-12-31 23:59:59.999999 UTC
VARCHAR	STRING	N/A	N/A	N/A

Nested / Composite Types

Data Type	Alias	Sample	Description
ARRAY	N/A	[1, 2, 3, 4]	A collection of values of the same data type, accessed by their index.
TUPLE	N/A	('2023-02-14','Valentine Day')	An ordered collection of values of different data types, accessed by their index.
MAP	N/A	{"a":1, "b":2, "c":3}	A set of key-value pairs where each key is unique and maps to a value.
VARIANT	JSON	[1,{"a":1,"b":{"c":2}}]	Collection of elements of different data types, including ARRAY and OBJECT.
BITMAP	N/A	0101010101	A binary data type used to represent a set of values, where each bit represents the presence or absence of a value.