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A database structure that can improve the speed of queries at the cost of disk space and slower inserts/updates. It stores a copy of one or more columns sorted but structures the data differently to allow faster access.

8 votes
4 answers
25k views

When to add indexes to #temp tables?

When testing stored procedures in SSMS, it sometimes says there is a missing index on #someTempTable____________________000000000000005B] (someField) etc etc When I do add them like this to the sp: … CREATE NONCLUSTERED INDEX [<Name of Missing Index, sysname,>] ON [dbo]. …
O.O's user avatar
  • 678
21 votes
3 answers
5k views

Is it OK to blindly add missing indexes?

Whenever I see a "Missing Index (Impact xxx)" my kneejerk reaction is to just create the new index. This results in a faster query every time as far as I can tell. …
O.O's user avatar
  • 678