Raghavendar S

Raghavendar S

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Improve the performance of an Query.

Mar 3 2021 4:21 AM
When we select data from multiple tables millions of records. how to improve the execution process?
 
My Answer: 1)Don't Use * when we use select statement, instead of * use the required columns.
 2) Add an index to the columns.
3) avoid the union  

Answers (1)