Probably the only valid reason for using
is when you're writing queries and want to quickly see what the query plan would actually be were there large amounts of data in the table(s).
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P. Kraft, and R. Thome. Human-Computer Interaction: Users and Contexts of Use, 5th International Conference, HCI International 2013, Las Vegas, NV, USA, Proceedings, Part III, volume 8006 of Lecture Notes in Computer Science, Springer, Heidelberg, (2013)