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.