Sql Does Count Include Null

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Sql Does Count Include Null

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WEB If you specify a column instead of NULL values will not be counted Example Find the number of products where the ProductName is not null SELECT COUNT ProductName FROM Products Try it Yourself 187 Ignore Duplicates You can ignore duplicates by using the DISTINCT keyword in the COUNT function WEB Aug 13 2009 nbsp 0183 32 simply do select count count a as num null count a as num not null from us counting a column returns the number of non null values substract it from count and you re gold Crouzilles

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