A symbol (such as +, -, *, /, **, &) representing an operation to be performed on one or more columns, values, variables, or strings. R:BASE provides the following types of operators: arithmetic, comparison, connecting, expression, and location.
For the symbols: (+, -, *, /, **, &) the mathematical calculations, in the same order, are: addition, subtraction, multiplication, division, exponentiation, and concatenation.
