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select count distinct multiple columns sql server

By Clean CottonmouthClean Cottonmouth on Aug 05, 2020
SELECT COUNT(DISTINCT (CHECKSUM(DocumentId,DocumentSessionId)) + CHECKSUM(REVERSE(DocumentId),REVERSE(DocumentSessionId)) )
FROM DocumentOutPutItems

Source: stackoverflow.com

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select distinct on 2 columns

By AlasAlas on Feb 19, 2021
SELECT agent_code, ord_amount, cust_code, ord_num
FROM orders 
WHERE agent_code='A002';

Source: www.w3resource.com

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