REGR_COUNT Function [Aggregate]

Returns an integer that represents the number of non-NULL number pairs used to fit the regression line.

Syntax 1

REGR_COUNT(dependent-expression, independent-expression)

Syntax 2

REGR_COUNT(dependent-expression, independent-expression)

OVER (window-spec)

Parameters

Parameter	Description
dependent-expression	The variable that is affected by the independent variable.
independent-expression	The variable that influences the outcome.

Returns

INTEGER

Usage

This function returns an UNSIGNED BIGINT as the result.

Note:

ROLLUP and CUBE are not supported in the GROUP BY clause with Syntax 1. DISTINCT is not supported.

Syntax 2 represents usage as a window function in a SELECT statement. As such, you can specify elements of window-spec either in the function syntax (inline), or with a WINDOW clause in the SELECT statement.

Example

The following example returns a value that indicates the number of non-NULL pairs that were used to fit the regression line. This function returns the value 75:

SELECT REGR_COUNT( Salary, ( YEAR( NOW() ) - YEAR( BirthDate ) ) )FROM Employees;

Standards and Compatibility

SQL—ISO/ANSI SQL compliant. SQL/OLAP feature T612.
Sybase—Compatible with SQL Anywhere.