Expressions

Several different types of expressions are used in Adaptive Server syntax statements.

**Table 2: Types of expressions used in syntax statements**
Usage	Definition
expression	Can include constants, literals, functions, column identifiers, variables, or parameters
logical_expression	An expression that returns TRUE, FALSE, or UNKNOWN
constant_expression	An expression that always returns the same value, such as “5+3” or “ABCDE”
float_expr	Any floating-point expression or expression that implicitly converts to a floating value
integer_expr	Any integer expression or an expression that implicitly converts to an integer value
numeric_expr	Any numeric expression that returns a single value
char_expr	An expression that returns a single character-type value
binary_expression	An expression that returns a single binary or varbinary value

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