: My : understand: if sortMissingLast is true do last in descending sort. for example: : field name : pname, if sortMissingLast is true, pname will be sorted desc : and we can't find result with pname, only other field information.
sortMissingLast is used to determine how you want documents that don't have a value to appear -- if sortMissingLast=true then it doesn't matter whether you sort "asc" or "desc", documents that don't have a value for that field will allways come last. if sortMissingLast="false" then the default Lucene sort behavior is used in which "missing" values are sorted the same as empty strings -- it is the "lowest" possible value, so they come first in asc sorts. -Hoss
