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Discuss content posted by Prakriti Agrawal
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COUNT_BIG
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COUNT_BIG
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agrawal.prakriti
agrawal.prakriti
Posted Monday, March 08, 2010 8:10 PM
SSC-Enthusiastic
Group: General Forum Members
Last Login: Thursday, May 27, 2010 1:31 PM
Points: 132,
Visits: 101
Comments posted to this topic are about the item
COUNT_BIG
Post #879054
Fal
Fal
Posted Monday, March 08, 2010 8:11 PM
Mr or Mrs. 500
Group: General Forum Members
Last Login: Wednesday, April 03, 2013 10:05 PM
Points: 584,
Visits: 1,571
Gosh, I'm the FIRST person to answer this QotD!
Thanks for the questions Prakriti.
S.
Post #879055
Open Minded
Open Minded
Posted Monday, March 08, 2010 10:20 PM
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Last Login: Thursday, April 11, 2013 12:58 AM
Points: 174,
Visits: 555
I read up what is the definition of count_big before I answered half-blindly. I never used it before and I may use it only years from now, since our transactional data is still too far from 2 billion rows (int, 4 bytes).
But thanks anyway.
*edited - our table with highest number of rows is still too far from even 10 million.
Post #879111
SQLRNNR
SQLRNNR
Posted Tuesday, March 09, 2010 12:16 AM
SSCoach
Group: General Forum Members
Last Login: Thursday, May 16, 2013 1:46 PM
Points: 18,732,
Visits: 12,329
Maybe this is a bit nitpicky, but the answer explanation doesn't seem to match the answer.
The answers are: SELECT COUNT_BIG(*) and SELECT COUNT_BIG(column_2).
This sentence does not match the correct answers. It seems somewhat confusing and could create a bit of a stir.
Jason
AKA CirqueDeSQLeil
I have given a name to my pain...
MCM SQL Server 2008
SQL RNNR
Posting Performance Based Questions - Gail Shaw
Posting Data Etiquette - Jeff Moden
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Post #879153
Jan Van der Eecken
Jan Van der Eecken
Posted Tuesday, March 09, 2010 12:34 AM
SSCrazy
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Last Login: 2 days ago @ 7:15 AM
Points: 2,260,
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I too had to look up COUNT_BIG in BOL since i wasn't even aware it existed. So thanks for the question, I learned something new yet again. Still got the answer wrong though. I realized a split second after clicking the Answer button that the point was gone :-(
--------------------------------------------------------------------------
The function of good software is to make the complex appear to be simple. (Grady Booch)
Post #879159
Open Minded
Open Minded
Posted Tuesday, March 09, 2010 12:51 AM
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Last Login: Thursday, April 11, 2013 12:58 AM
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[b]CirquedeSQLeil (3/9/2010)
The answers are: SELECT COUNT_BIG(*) and SELECT COUNT_BIG(column_2).
This sentence does not match the correct answers. It seems somewhat confusing and could create a bit of a stir.
This is wiered...I answered II and III, thereby getting both correct?
SELECT COUNT_BIG(column_2)
SELECT COUNT_BIG(ALL column_2)
ALL is the default and hence COUNT_BIG(column 2) is same as COUNT_BIG(ALL column_2). This evaluates expression for each row in a group and returns the number of nonnull values.
Maybe the first paragraph of the explanation was wrong?
The answers are: SELECT COUNT_BIG(*) and SELECT COUNT_BIG(column_2). COUNT_BIG(*) will count all rows from the table (including duplicate & null rows). COUNT_BIG(DISTINCT column_2) will evaluate distinct non-null values.
If the correct answers are different from mine, it's alright for me to have my points deducted. I know I will never be able to verify the answers without wrecking my server's disk space or processing power.
Post #879168
jshailendra
jshailendra
Posted Tuesday, March 09, 2010 1:35 AM
Old Hand
Group: General Forum Members
Last Login: Friday, December 21, 2012 5:24 AM
Points: 366,
Visits: 436
Thanks for the question..hurray I got it correct...but only after reading explanation about it in BOL...I never heard about it before...but its a very useful function...
Yes..the explanation given by OP was wrong..answer II and III is absolutely correct.
Post #879179
p.ramchander
p.ramchander
Posted Tuesday, March 09, 2010 1:43 AM
Say Hey Kid
Group: General Forum Members
Last Login: Monday, February 18, 2013 5:19 AM
Points: 703,
Visits: 172
Thanks for the question. Learn something new today.
Post #879182
simon.whale
simon.whale
Posted Tuesday, March 09, 2010 2:04 AM
SSChasing Mays
Group: General Forum Members
Last Login: Monday, May 13, 2013 2:28 AM
Points: 656,
Visits: 148
Great question, made you think about the simple functions that we take for granted, even though i have never needed to use count_big
Post #879188
r5d4
r5d4
Posted Tuesday, March 09, 2010 3:13 AM
SSC Veteran
Group: General Forum Members
Last Login: Monday, February 11, 2013 7:58 AM
Points: 267,
Visits: 662
the answer is I and II , not II and III.
does anyone audit these questions? i want my point (joke) :)
Post #879208
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