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SQL Tuning

pms_reddy1 asked
Last Modified: 2012-04-27
If I am using the order by clause in SQL statement and I am trying to fetch all rows in a table,which is having 2000000,Then how optimizer will proceede in the below cases?
Table is having index on the column,on the  same column we are having order by clause.
1.Table is having statistics.
2.Table is not having statistics.
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