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Distinct is taking a lot of time

tsql
#1

Hi , I have a query which is taking a lot of time because of a Distinct column.Ca any one suggest how can i remove the distinct and replace with any other functions like PARTITION BY to get the output.

My Query:

SELECT
                date
                , NAME
                , LONG
                , LAT
               , COUNT ( DISTINCT IMEI)  + COUNT  ( DISTINCT CASE WHEN IMEI IS NULL THEN 1 END) AS NUMBER_OF_DISTINCT_USERS
               , MAX(MAT) MARKET
                FROM poc.CP_TEST
                WHERE date = to_timestamp('20190130','YYYYMMDDHH24') - INTERVAL '1 DAY'
                and MAT like '%Light%'
               GROUP BY
                date
               ,NAME
               ,LONG
               ,LAT

I want to replace that distinct with some other functions...

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#2

That looks like Oracle. Please be aware that this is a SQL Server / TSQL forum.

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