After creating the indexes the output was executed in 1
milliseconds.But I would like to ask you one thing.Its seems like
after applying the indexes on the three tables the query became
faster.As well as the cost of the query is now after applying the
index is 156.Initially the cost was 28.How come there is a increase in
the cost after applying the indexes in the three table?Please help to
resolve the issue.?
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