CData Python Connector for Apache Impala

Build 21.0.7930

Aggregate Functions

COUNT

Returns the number of rows matching the query criteria.

SELECT COUNT(*) FROM [CData].[Default].Customers WHERE Country = 'US'

COUNT(DISTINCT)

Returns the number of distinct, non-null field values matching the query criteria.

SELECT COUNT(DISTINCT City) AS DistinctValues FROM [CData].[Default].Customers WHERE Country = 'US'

AVG

Returns the average of the column values.

SELECT CompanyName, AVG(Balance) FROM [CData].[Default].Customers WHERE Country = 'US'  GROUP BY CompanyName

MIN

Returns the minimum column value.

SELECT MIN(Balance), CompanyName FROM [CData].[Default].Customers WHERE Country = 'US' GROUP BY CompanyName

MAX

Returns the maximum column value.

SELECT CompanyName, MAX(Balance) FROM [CData].[Default].Customers WHERE Country = 'US' GROUP BY CompanyName

SUM

Returns the total sum of the column values.

SELECT SUM(Balance) FROM [CData].[Default].Customers WHERE Country = 'US'

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Build 21.0.7930