COUNT FUNCTION

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COUNT FUNCTION

ash0550

Mr or Mrs. 500

Points: 517
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June 8, 2011 at 3:34 pm

#239593

I was trying to understand the count function but its not happening to the mark.
I am a bit unsatisfied with the explanations provided in different tutorials.
Could some one give me a brief explanation with syntax and examples

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@SQLFRNDZ SSCrazy Eights Points: 9095 More actions · Answer 1

select Count(*) from table -Returns the Total Number of rows in a table

select Columnname, Count(*) from table group by columnname having having count(*) >1

Gives the number of repeated rows along with the row repeating.

The above two are frequently I use.

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Latheesh NK SSCertifiable Points: 6559 More actions · Answer 2

ash0550 (6/8/2011)
I was trying to understand the count function but its not happening to the mark.
I am a bit unsatisfied with the explanations provided in different tutorials.
Could some one give me a brief explanation with syntax and examples

Whats your specific question on Count function. Its pretty simple as that count(*) counts the number of rows in a table.

Jeff Moden SSC Guru Points: 1004312 More actions · Answer 3

ash0550 (6/8/2011)
I was trying to understand the count function but its not happening to the mark.
I am a bit unsatisfied with the explanations provided in different tutorials.
Could some one give me a brief explanation with syntax and examples

Do what I do. Make some test data and try using it. It's one of the best ways to learn.

--Jeff Moden

RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

Change is inevitable... Change for the better is not.

Helpful Links:
How to post code problems
How to Post Performance Problems
Create a Tally Function (fnTally)

ash0550 Mr or Mrs. 500 Points: 517 More actions · Answer 4

Jeff Moden (6/9/2011)
ash0550 (6/8/2011)
I was trying to understand the count function but its not happening to the mark.
I am a bit unsatisfied with the explanations provided in different tutorials.
Could some one give me a brief explanation with syntax and examples
Do what I do. Make some test data and try using it. It's one of the best ways to learn.

Thanks man it has been useful