Numerical Expression
numeric-expression ::= value-expression operator value-expression
operator: ::= '+' | '-' | '*' | '/' | '%'
Numerical expression can be used to execute numerical operations.
The operator + calculates the sum of two numbers, concat two strings or calculates the sum of two date values.
The operator - calculates the difference of two numbers or date values.
The operator * only supports numerical values and calculates the product of them.
The operator / calculates the quotient of two numerical values. If the given values are floating point numbers, the returned value will be a floating point number too. If the given values are integer values, the result will be an integer too.
The operator % calculates the modulo result of the two numerical values.