When does WHERE filtering occur? [duplicate]

When does WHERE filtering occur? [duplicate]

References

Reference NO 1

http://stackoverflow.com/questions/15205676/when-does-where-filtering-occur

Reference NO 2

http://office.microsoft.com/en-us/excel-help/filter-for-unique-values-or-remove-duplicate-values-HP010342518.aspx

Reference NO 3

http://office.microsoft.com/en-us/excel-help/filter-data-in-a-range-or-table-HP010342517.aspx

Reference NO 4

http://www.intuit.com/website-building-software/blog/2012/03/should-you-be-concerned-about-duplicate-content-penalties/

Reference NO 5

https://bugs.kde.org/show_bug.cgi?id=283682

Reference NO 6

http://www.anti-dupe.com/products/prevent_outlook_duplicate.aspx

Reference NO 7

http://pic.dhe.ibm.com/infocenter/spssstat/v20r0m0/topic/com.ibm.spss.statistics.help/idh_idd_duplicatecases.htm

Reference NO 8

http://www.diveintopython.net/power_of_introspection/filtering_lists.html