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Table Access Order


Table Access Order

Author
Message
Kwex
Kwex
SSC Eights!
SSC Eights! (817 reputation)SSC Eights! (817 reputation)SSC Eights! (817 reputation)SSC Eights! (817 reputation)SSC Eights! (817 reputation)SSC Eights! (817 reputation)SSC Eights! (817 reputation)SSC Eights! (817 reputation)

Group: General Forum Members
Points: 817 Visits: 240
I got it wrong today ... as I completely forgot the role of "HASH" in the join statement. Grrrrr ....
Thomas Abraham
Thomas Abraham
SSCertifiable
SSCertifiable (6K reputation)SSCertifiable (6K reputation)SSCertifiable (6K reputation)SSCertifiable (6K reputation)SSCertifiable (6K reputation)SSCertifiable (6K reputation)SSCertifiable (6K reputation)SSCertifiable (6K reputation)

Group: General Forum Members
Points: 6021 Visits: 2256
Not only a great question, but a superb explanation. Thanks.

Please don't go. The drones need you. They look up to you.
Connect to me on LinkedIn
Britt Cluff
Britt Cluff
Hall of Fame
Hall of Fame (3.3K reputation)Hall of Fame (3.3K reputation)Hall of Fame (3.3K reputation)Hall of Fame (3.3K reputation)Hall of Fame (3.3K reputation)Hall of Fame (3.3K reputation)Hall of Fame (3.3K reputation)Hall of Fame (3.3K reputation)

Group: General Forum Members
Points: 3289 Visits: 253
Good question, had to think a little. I was pretty sure it was A especially since there were no rows.

http://brittcluff.blogspot.com/
Cliff Jones
Cliff Jones
SSCertifiable
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Group: General Forum Members
Points: 6765 Visits: 3648
Very interesting question. Thanks for the explanation.
rfr.ferrari
rfr.ferrari
Hall of Fame
Hall of Fame (3.7K reputation)Hall of Fame (3.7K reputation)Hall of Fame (3.7K reputation)Hall of Fame (3.7K reputation)Hall of Fame (3.7K reputation)Hall of Fame (3.7K reputation)Hall of Fame (3.7K reputation)Hall of Fame (3.7K reputation)

Group: General Forum Members
Points: 3701 Visits: 13648
Great question Paul!!!

Thanks!


rfr.ferrari
DBA - SQL Server 2008
MCITP | MCTS

remember is live or suffer twice!
the period you fastest growing is the most difficult period of your life!

Ken Wymore
Ken Wymore
SSCrazy Eights
SSCrazy Eights (9.6K reputation)SSCrazy Eights (9.6K reputation)SSCrazy Eights (9.6K reputation)SSCrazy Eights (9.6K reputation)SSCrazy Eights (9.6K reputation)SSCrazy Eights (9.6K reputation)SSCrazy Eights (9.6K reputation)SSCrazy Eights (9.6K reputation)

Group: General Forum Members
Points: 9586 Visits: 2469
Nice question, thanks!
chrisfradenburg
chrisfradenburg
SSCertifiable
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Group: General Forum Members
Points: 5358 Visits: 2090
It's been good getting some of these harder questions that require knowing how SQL works. Thanks for taking the time to put them together.
Toreador
Toreador
SSCertifiable
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Group: General Forum Members
Points: 5926 Visits: 8278
I was expecting to see "undetermined, could be either" as an option so guessed (wrongly as usual).
Learned something new - not sure how useful it is to know, but these things are always interesting Smile
Trey Staker
Trey Staker
SSCrazy
SSCrazy (2.3K reputation)SSCrazy (2.3K reputation)SSCrazy (2.3K reputation)SSCrazy (2.3K reputation)SSCrazy (2.3K reputation)SSCrazy (2.3K reputation)SSCrazy (2.3K reputation)SSCrazy (2.3K reputation)

Group: General Forum Members
Points: 2252 Visits: 2788
Got it wrong Sad

Thanks for the question, eventhough I got it wrong I learned something. Great explanation!

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Use Full Links:
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Paul White
Paul White
SSC Guru
SSC Guru (79K reputation)SSC Guru (79K reputation)SSC Guru (79K reputation)SSC Guru (79K reputation)SSC Guru (79K reputation)SSC Guru (79K reputation)SSC Guru (79K reputation)SSC Guru (79K reputation)

Group: General Forum Members
Points: 79328 Visits: 11400
Toreador (9/20/2011)
Learned something new - not sure how useful it is to know, but these things are always interesting Smile

It depends. The average DBA can get by perfectly well with just a basic understanding of execution plans.

But who wants to be average?



Paul White
SQLPerformance.com
SQLblog.com
@SQL_Kiwi
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