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Chris Maunder16-Jul-09 4:10
cofounderChris Maunder16-Jul-09 4:10 
PinnedHow to get an answer to your question PinPopular
Chris Maunder10-Nov-05 17:30
cofounderChris Maunder10-Nov-05 17:30 
QuestionCreate a new Primary Key on survey table Pin
learning_new25-Feb-20 13:01
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QuestionMessage Closed Pin
11-Feb-20 23:33
professionalmodelinmumbaicity11-Feb-20 23:33 
QuestionIndexing question Pin
Super Lloyd5-Feb-20 14:35
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Eddy Vluggen5-Feb-20 16:09
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Super Lloyd5-Feb-20 18:38
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Eddy Vluggen6-Feb-20 3:50
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Jörgen Andersson5-Feb-20 23:28
communityengineerJörgen Andersson5-Feb-20 23:28 
AnswerRe: Indexing question Pin
Richard Deeming6-Feb-20 1:17
communityengineerRichard Deeming6-Feb-20 1:17 
For that query, definitely index 2.

Think of it like searching a massive address book. You're trying to find the highest house number for anyone called "John Smith".
  • Index 1 sorts the addresses by house number, and includes the first and last name. You have to start at the end and scan backwards until you find an entry for "John Smith".
  • Index 2 sorts the addresses by first name, then last name, then house number. You can jump straight to the end of the "John Smith" records, and see the highest house number.

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

Questionintegrity constraint Pin
Tara112-Feb-20 7:23
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Wendelius2-Feb-20 9:47
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Tara112-Feb-20 10:07
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markkuk3-Feb-20 0:48
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Questiontransaction recovery Pin
Tara112-Feb-20 6:46
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Eddy Vluggen3-Feb-20 4:00
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QuestionCopy structure of all the tables of one database to another server Pin
Member 1473192331-Jan-20 5:58
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phil.o31-Jan-20 6:12
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Eddy Vluggen3-Feb-20 4:01
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Questionintegrity constraint Pin
Tara1129-Jan-20 11:36
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Mycroft Holmes29-Jan-20 11:56
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Tara1129-Jan-20 12:05
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Mycroft Holmes29-Jan-20 12:21
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Wendelius2-Feb-20 10:01
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QuestionOracle SQL query to MS-SQL Pin
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