Compound Expressions

A compound expression specifies a combination of other expressions.

compound_expression::=

Text description of compound_expression

Note: You can use any built-in function as an expression ("Function Expressions"). However, in a compound expression, some combinations of functions are inappropriate and are rejected. For example, the LENGTH function is inappropriate within an aggregate function.

The PRIOR operator is used in CONNECT BY clauses of hierarchical queries.

See Also: "Operator Precedence" and "Hierarchical Queries"

Some valid compound expressions are:

('CLARK' || 'SMITH') 
LENGTH('MOOSE') * 57 
SQRT(144) + 72 
my_fun(TO_CHAR(sysdate,'DD-MMM-YY'))