USS Function

Returns the uncorrected sum of squares of all the values in an expression.

Categories: Aggregate
Descriptive Statistics
Returned data type: DOUBLE
Syntax
Arguments
Details
Comparisons
Example
See Also

Syntax

USS(expression)

Arguments

expression

specifies any valid SQL expression.

Data type DOUBLE
See <sql-expression>
FedSQL Expressions

Details

Null values and SAS missing values are ignored and are not included in the computation.
You can use an aggregate function to produce a statistical summary of data in the entire table that is listed in the FROM clause or for each group that is specified in a GROUP BY clause. The GROUP BY clause groups data by a specified column or columns. When you use a GROUP BY clause, the aggregate function in the SELECT clause or in a HAVING clause instructs FedSQL in how to summarize the data for each group. FedSQL calculates the aggregate function separately for each group. If GROUP BY is omitted, then all the rows in the table or view are considered to be a single group.

Comparisons

The CSS function returns the corrected sum of squares of all values. The USS function returns the uncorrected sum of squares.

Example

Table: DENSITIES
The following statements illustrate the USS function:
Statements
Results
 
select uss(density) from densities;
 
510190
 
select uss(population) from densities;
 
2.82E15

See Also

Functions:
CSS Function
SELECT Statement Clauses:
SELECT Clause
GROUP BY Clause
HAVING Clause
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Last updated: February 23, 2017