Primary Expressions
Syntax
primary_expression ::=
parenthesized_expression
|
constant_expression
|
column_reference
|
variable_reference
|
array_constructor
|
map_constructor
|
case_expression
|
cast_expression
|
extract_expression
|
function_call
|
count_star
|
transform_expression
The following subsections describe each of the primary expressions listed in the above grammar rule, except from count_star, which is the count(*) aggregate function defined in the Using Aggregate Functions section.