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Index optimization of performance tuning methodology
2022-07-05 21:58:00 【Short section senior】
Is it worth indexing
selectivity
Data density
The data distribution
Statistics
What is database engine optimization consultant ?
Analyze data performance using working load
It provides two ways: graphical and command line
Index fragment
How are fragments produced
When the data is modified or causes the index page to split ,SQL Server Will reorganize the index page
resolvent
<= 30% debris = Reorganize
> 30% debris = Rebuild
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