SQL: Data Types

Data Type	Syntax	Explanation (if applicable)
integer	integer
smallint	smallint
numeric	numeric(p,s)	Where p is a precision value; s is a scale value. For example, numeric(6,2) is a number that has 4 digits before the decimal and 2 digits after the decimal.
decimal	decimal(p,s)	Where p is a precision value; s is a scale value.
real	real	Single-precision floating point number
double precision	double precision	Double-precision floating point number
float	float(p)	Where p is a precision value.
character	char(x)	Where x is the number of characters to store. This data type is space padded to fill the number of characters specified.
character varying	varchar2(x)	Where x is the number of characters to store. This data type does NOT space pad.
bit	bit(x)	Where x is the number of bits to store.
bit varying	bit varying(x)	Where x is the number of bits to store. The length can vary up to x.
date	date	Stores year, month, and day values.
time	time	Stores the hour, minute, and second values.
timestamp	timestamp	Stores year, month, day, hour, minute, and second values.
time with time zone	time with time zone	Exactly the same as time, but also stores an offset from UTC of the time specified.
timestamp with time zone	timestamp with time zone	Exactly the same as timestamp, but also stores an offset from UTC of the time specified.
year-month interval		Contains a year value, a month value, or both.
day-time interval		Contains a day value, an hour value, a minute value, and/or a second value.