August 2010
Intermediate to advanced
526 pages
23h 39m
English
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Name
sum() — Return the numerical summation
Common Usage
sum( number )Description
The sum() aggregate computes the sum or total of
all the non-NULL
values. Any non-NULL number
that is not an integer will be interpreted as a
floating-point value.number
If all non-NULL
values are integers, number
sum() will return an integer. Otherwise,
sum() will return a
floating-point value. If no non-NULL
is found, number
sum()
will return NULL.
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