excel - Comparing Lists and Deleting Duplicates -


i have been using following formula test whether or not single entry in 1 column exists in second column:

=countif($e$1:$e$99504,$i1)>0

what able if above formula evaluates true, delete duplicate entry second column (i.e. duplicate in e1-e99504 range), , shift cells of entry up. believe, aside cell shifting, can done without vba.

however, have 5 columns compare in particular case, more possibly in future. such trying determine way perform above operations on multiple columns using vba. otherwise need run same process 10 times , feel there more efficient way should learn. hierarchy of comparisons follows:

suppose have columns a,b,c,d,e. compared b, c, d, each time duplicates in unfixed columns removed while entries in remain. b fixed, moving through c,d, , e in same manner , again entries in b preserved. until d compared e , process complete. has made algorithm this? appreciated.

using pure vba solution , assuming data looks this:

enter image description here

i'd recommend working backwards since deleting , shifting data around. try code:

sub removeduplicates()     dim lastcol integer     lastcol = 5    'col 5 column e      dim wks worksheet     set wks = worksheets("sheet1")      dim searchrange range     set searchrange = wks.range("a1:a" & wks.cells(rows.count, "a").end(xlup).row)      dim comparearray variant     dim searcharray variant      'get values col search against     comparearray = searchrange.value      col = lastcol - 1 1 step -1         'set values search matches         searcharray = searchrange.offset(0, col - 1).value          'set values last column compare against         comparearray = searchrange.offset(0, col).value          = 1 ubound(comparearray)             if comparearray(i, 1) = searcharray(i, 1)                 'match found, delete , shift left                 cells(i, col).delete shift:=xltoleft             end if         next     next col end sub

results:

enter image description here

make sure update sheet name, range , last column number match criteria.


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