进行区分大小写的vlookup

Question

有谁知道如何使用Excel进行区分大小写的vlookup？

Answer 1

The key issue to a complete solution here is as Dick Kusleika observes: avoiding stopping the search when a case-insensitive match is found before the case sensitive one.

The Blog entry Case Sensitive Lookup in Excel claims to have a solution to this problem using the INDEX and MATCH functions (original info courtesy a post by Peo Sjoblom). There are some alternatives in the comments too.

Answer 2

The newer AGGREGATE¹ function can pick up the first, second, third, etc. matches by forcing the non-matches into an error state and ignoring the errors. Modify this method using the EXACT function to choose a case-sensitive lookup.

nam     date            code
bob     19-Oct-2015     001
BOB     02-Nov-2015     002
boB     28-Oct-2015     002
Bob     24-Oct-2015     004
bOB     27-Oct-2015     005
bOb     21-Oct-2015     006

Pick Bob and BOB from the mix with,

=INDEX(B$2:B$7, AGGREGATE(15, 6, ROW($1:$6)/EXACT($A$2:$A$7, $E2), 1))

Fill down and right as necessary.

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¹ _{The AGGREGATE function was introduced with Excel 2010. It is not available in earlier versions.}

Answer 3

it seems to be a feature of vlookup that case does not matter - so Bob is the same as bob. You could use code() to convert to ASCII and lookup on code. This would make your lookup more complicated, and code() only returns the code for the first item in the string.

Answer 4

If the value you are returning is a number and not text, and if the first column of your lookup_table is unique ('bob' doesn't appear more than once), then you can use an array formula like this

=SUM(EXACT(A3:A6,"bob")*(B3:B6))

Enter with Control+Shift+Enter, not just enter. It sums everything in B3:B6 where A3:A6 is exactly "bob". Since there's only one "bob", it's only summing one cell. Because it uses SUM, returning strings won't work.

If 'bob' appears more than once, it will sum all the values, which you probably don't want.

Update

If the value you are looking up is not a number, you could use an array formula to find the row, then wrap an INDEX function around it. Assume your data is A3:B6 and you want to pull data out of column B based on an exact match in column A.

=INDEX(A3:B6,SUM(EXACT(A3:A6,"bob")*(ROW(B3:B6)))-2,2)

Enter with CSE. The SUM portion returns the row where "bob" is found. You have to subtract 2 from it because the data starts in A3 (subtract one less than the row where the data starts). The INDEX function uses that row and pulls from column B.

Answer 5

My first thought is to use the EXACT() function to test the result of the vlookup:

=IF(EXACT(VLOOKUP(A2,$C$2:$C$4,1,FALSE),A2),VLOOKUP(A2,$C$2:$C$4,1,FALSE),0)

Where A2 = the value you wish to look up and C2:C4 is the range containing the values to look up.

This would return the result of the vlookup and confirm that it matched the case of the value you wish to look up. It would return the vlookup result if they match case, or 0 otherwise.

EDITED

Actually this answer wouldn't work. If your list contained "Bob" and "bob" it would find the first one and only test that. Sorry, I didn't think of that.