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Changes between Initial Version and Version 1 of Ticket #25912, comment 2

initial	v1
1	1	There's a slight problem here that we'll probably need to take to the mailing list. Oracle (surprise surprise) is the only supported database that does not have a bitshift operator. It doesn't even have a bitshift function that I can find.
2	2
3		We'll need to decide whether we want to leave a backend behind (NotSupportedError or whatever..), figure out a way to support bit shifting by doing the actual math (bitshift by doing [/] ~~2*X~~) in an as_oracle method, or abandon the idea of supporting bitshifting in django core and using a library to implement some monkey patching.
	3	We'll need to decide whether we want to leave a backend behind (NotSupportedError or whatever..), figure out a way to support bit shifting by doing the actual math (bitshift by doing [/] `2*X`) in an as_oracle method, or abandon the idea of supporting bitshifting in django core and using a library to implement some monkey patching.
4	4
5	5	My preferences here are 2 (do the math for oracle), 3 (leave it out), 1 (no support). Doing the math will result in some overhead (a super() method call) for every F() expression on oracle, whether or not you're doing bitshifting. Unsure if doing the math is actually equivalent in all cases or not though, so we'd need some more robust testing for corner cases.