Hands-On Data Science with SQL Server 2017 - IIMK Library
SELECT ISNULL(1, 2) -- returns 1 ... , COALESCE(1, NULL, NULL) -- returns also 1. SELECT COALESCE(NULL, NULL, NULL) -- Leads to an error, all constants are.Télécharger Hands-On Data Science with SQL Server 2017 - IIMK Library pdf
