faster queries in some cases, for example when the RHS of the IN operator
changes for each row of a large table scan.
FossilOrigin-Name: 436e884215e2b33ca3fbb555362237b12827c07a
right-hand side always either false or true, respectively, even if the
left-hand side is NULL. Ticket [80e031a00f45dc]
FossilOrigin-Name: c288ac644d0bfda2b9bc204dc86df8e74d4f6843
