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Re: count(*) or count(id)
Posted by: Peter Brawley ()
Date: June 28, 2016 05:18PM

As the manual says, Count(*) returns a rowcount, Count(expr) returns the count of unique non-null values of expr.

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Subject Views Written By Posted
count(*) or count(id) 658 Ra Nala 06/28/2016 06:22AM
Re: count(*) or count(id) 292 Ra Nala 06/28/2016 06:26AM
Re: count(*) or count(id) 281 Peter Brawley 06/28/2016 05:18PM
Re: count(*) or count(id) 307 Rick James 07/04/2016 01:04PM
Re: count(*) or count(id) 304 Ra Nala 07/06/2016 12:30AM


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