Delete history rows at incrementing intervals the older it is

Delete history rows at incrementing intervals the older it is

References

Reference NO 1

http://stackoverflow.com/questions/15203926/delete-history-rows-at-incrementing-intervals-the-older-it-is

Reference NO 2

http://stackoverflow.com/questions/7756708/mysql-select-rows-from-exactly-7-days-ago

Reference NO 3

http://stackoverflow.com/questions/13676488/need-an-effective-way-to-run-a-script-when-mysql-rows-timestamp-increases

Reference NO 4

http://stackoverflow.com/questions/14503327/avg-datetime-interval-show-days-and-hours

Reference NO 5

http://hadoop.apache.org/docs/stable/mapred-default.html

Reference NO 6

http://www.sigmaplot.com/products/sigmaplot/faq.php

Reference NO 7

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Reference NO 8

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