Returns, in order of increasing rank, the bottom-most rows of a table whose cumulative total is at least a specified value.
BottomSum(<table expression>, <rank expression>, <sum>)
An expression that returns a table, such as a <table column reference>, or a function that returns a table.
The BottomSum function returns the bottom-most rows in increasing order of rank. The rank is based on the evaluated value of the <rank expression> argument for each row, such that the sum of the <rank expression> values is at least the given total that is specified by the <sum> argument. BottomSum returns the smallest number of elements possible while still meeting the specified sum value.