ABAP Keyword Documentation → ABAP - Reference → ABAP Syntax → ABAP Statements → Operators and Expressions

# Expressions

At certain operand positions the following expressions can be formed:

An expression has a result that is used as an operand in the statement. Logical expressions can contain calculation expressions, that is, arithmetical expressions, string expressions, and bit expressions. The three different calculation expression types cannot be mixed in one calculation type at the moment.

Other versions:
**7.31** | 7.40 | 7.54

Note

Although the calculation expression types cannot be mixed directly, a different type of expression can occur as an argument of a permitted function in another expression. In the same way, logical expressions can occur as arguments of Boolean functions in calculation expressions.