Used to sum two numbers.
result = expression1 + expression2
The + operator syntax has these parts:
Although you can also use the + operator to concatenate two character strings,
you should use the & operator for concatenation to eliminate ambiguity and provide
When you use the + operator, you may not be able to determine whether addition
or string concatenation will occur.
The underlying subtype of the expressions determines the behavior of the + operator
in the following way:
|Both expressions are numeric
|Both expressions are strings
|One expression is numeric and the other is a string
If both expressions are Empty, result
is an Integer subtype.
However, if only one expression is Empty, the other expression is returned unchanged
© 1997-2019 InterSystems Corporation, Cambridge, MA