Literals, which are also called constants, specify a value.
The following diagram shows the format of literals:
(B)0[m[1mliteral = [m
[1m [m
[1mqqwq> numeric-literal qqqqwqqq> [m
[1m tq> string-literal qqqqqu [m
[1m tq> date-time-literal qqu [m
[1m tq> interval-literal qqqu [m
[1m mq> dbkey-literal qqqqqqj [m
Literals are a type of value expression . Many SQL clauses that
do not accept general value expressions require literal values.
Literal values can be either numeric, character string, or date.
In addition, SQL provides keywords that refer to literals, for
example:
o NULL
o CURRENT_DATE
o SYSTEM_USER
Additional Information:
explode
extract