union
The union of bitmaps, accumulated into one result.
What an IN (a, b, c) predicate does with three sidecar bitmaps. Folding or pairwise would allocate a whole bitmap per step and throw all but the last away.
The union of bitmaps, accumulated into one result.
What an IN (a, b, c) predicate does with three sidecar bitmaps. Folding or pairwise would allocate a whole bitmap per step and throw all but the last away.