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You have completed Intermediate Excel!
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LOOKUP Tips and Common Errors
1:19 with Tyler TallonIt’s easy to make mistakes when using a LOOKUP, so let’s discuss several tips to help you avoid some common pitfalls.
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First, lookups always
find the first match.
0:00
So if the first column in your
VLOOKUP range, the lookup value column
0:01
contains duplicates then they
will match the first instance.
0:05
In a later video,
0:09
I'll show you how to quickly highlight
duplicates using conditional formatting.
0:10
So in our example, if a county was
listed twice in our table array,
0:15
it would retrieve the data
from the first one.
0:18
Also be careful, if you insert or
delete any rows, or
0:21
columns after you have created a lookup,
the row or column
0:25
index number won't change automatically
when columns are inserted or deleted.
0:29
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