Operators

Operators can be used when writing expressions.

Expressions are mathematical formulas that may contain various operators (e.g., +) and functions (e.g., min) and may refer to column names (e.g., price) as well as explicit values (e.g., 1.01). They may also contain certain predefined variables (e.g., i_).

The arguments to the operators may generally be explicit values, column names, function calls (e.g., min(prc1;prc2)), or parenthesized expressions (e.g., (price*1.01)).