Module | RR::TableScanHelper |
In: |
lib/rubyrep/table_scan_helper.rb
|
Some helper functions that are of use to all TableScan classes
Compares the primary keys of left_row and right_row to determine their rank. Assumes there is a function primary_key_names returning the array of primary keys that are relevant for this comparison
Assumes that at least one of left_row and right_row is not nil A nil row counts as infinite.