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                                                    How to check query optimization
                                                
                                                 
                                                 
                                                 1.    Create Index 2.    Primary Key Creation 3.    Joins instead of sub queries 4.    Select column names instead of * 5.    First n rows where order by is used 6.    No usage of cursors
 
  
                                                 
                                                 
                                                
                                                 
                                                
                                                 
                                                 
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