6.4.17 The Operator +
This operator may only be used in the following ways:
string1 +
string2
- This yields the concatenation of string1 and string2.
list1 +
list2
- This yields the concatenation of list1 and list2.
number1 +
number2
- This yields the sum of number1 and number2.
record1 +
record2
- This yields a record wich consists of all attributes of record1
and record2. If record1 and record2 have a common
attribute names, the corresponding attributes in the result record will
have the attribute values from record2, in contrast to the
operator
*
.