I've a table with 10 Million records in MySQL with INNODB engine. Using this table I am
doing some calculations in STORED PROCEDURE and getting the results.
In Stored Procedure I used the base table and trying to process all the records in the
table. But it's taking more than 15 Minutes to execute the procedure. When executing the
Procedure in the process list I am getting 3 states like 'Sending data', 'Sorting Result'
and 'Sending data' again.
Then I created one view by using the base table and updated the procedure by replacing
that view in the place of a base table, it took only 4 minutes to execute the procedure
with a view. When executing the Procedure in the process list I am getting 2 states like
'Sorting Result' and 'Sending data'. The first state of 'Sending data' is not happened
with view, It's directly started with 'Sorting Result' state.
When I'm referring some MySQL sites and other blogs, I have seen that VIEWS will never
improve the performance. But here I see some improvements with a view.
I would like to know how VIEW is improving the performance.
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