问题
How can I make a bitwise shift in MySQL? Is there any specific instruction or operator? If not, how to simulate it optimally?
回答1:
Have a look at the bitwise operators in MySQL first: http://dev.mysql.com/doc/refman/5.0/en/bit-functions.html
Then you have left shift:
http://dev.mysql.com/doc/refman/5.0/en/bit-functions.html#operator_left-shift
And right shift:
http://dev.mysql.com/doc/refman/5.0/en/bit-functions.html#operator_right-shift
回答2:
To use a bitwise shift in MySQL, you can use << or >> for left shift or right shift respectively.
回答3:
Looks like there is shift operators available, ie >> for right shift.
来源：https://stackoverflow.com/questions/6670611/bitwise-shift-in-mysql