Add `Merge::CompareFieldsFlag` transform
Enters "same" into target
if the value in all fields
specified is the same. Otherwise, enters "diff" into target
.
downcase
true converts all values to lowercase before comparing. strip
true removes leading/trailing spaces. Neither option changes the values in fields
ignore_blank
true would result in "same" if 2 field values were the same but 1 was empty. ignore_blank
false would report "diff" in this situation.