For example,

Smallint

is the Amazon Redshift data type name. The data type is stored as a 2-byte integer. Here,

Smallint

is the Amazon Redshift data type name and

Int2

is the Amazon Redshift data type alias.

The following table compares the Amazon Redshift data types and the transformation data types:

Amazon Redshift Data Type	Amazon Redshift Data Type Aliases	Description	Transformation Data Type
Smallint	Int2	Signed two-byte integer.	Small Integer
Integer	Int, Int4	Signed four-byte integer.	Integer
Bigint	Int8	Signed eight-byte integer.	Bigint
Decimal	Numeric	Exact numeric of selectable precision.	Decimal
Real	Float4	Single precision floating-point number.	Double
Double Precision	Float8, Float	Double precision floating-point number.	Double
Boolean	Bool	Logical Boolean (true/false).	Small Integer
Char	Character, Nchar, Bpchar	Fixed-length character string.	String
Varchar	Character Varying, Nvarchar, Text	Variable-length character string with a user-defined limit.	String
Date	NA	Calendar date (year, month, day).	Timestamp
Timestamp	Timestamp without time zone	Date and time (without time zone).	Timestamp
Timestampz	Timestamp with time zone	Date and time (with time zone).	Timestamp