Move series forward

[gdassori]

Hi, any hope to have a "move series forward" feature using another alias prefix instead of "shift_" ?

Thanks.

[danielmorlock]

If there is still the need: #24
You can specify bshift_... instead of shift to move forward e.g.

SELECT non_negative_derivative("value", 1h) AS "bshift_1_weeks" FROM "CPU_LOAD" WHERE "tag" = 'all'