2.4 Literals

Literals are used to directly represent data. Examples of standard types of literals are:

integer        - 0, -34, 45, 0X080000000;
fixed-point    - 0.0, -3.14
floating-point - 3.23e-23;
string         - 'text', 'don''t!';
binary string  - x'48656C6C6F20776F726C64'
date           - DATE '2018-01-19';
time           - TIME '15:12:56';
timestamp      - TIMESTAMP '2018-01-19 13:32:02';
boolean        - true, false, unknown
null state     - null

Details about handling the literals for each data type are discussed in the next chapter, Data Types and Subtypes.