Need help with an excel lookup looking at two colums

I have a XLS workbook with two sheets

Data & WBS

In Data column A is my OppID and in column C I want a vlookup to look in sheet WBS and if DATA column A = WBS column A then grab column B from WBS, but if column C in WBS is not blank grab that instead.
Matt PinkstonEnterprise ArchitectAsked:
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regmigrantCommented:
Would be easier with examples but in principle you can put the following in Data column c and copy down (this assumes row 1 is header and row 2 is start of data and there are 999 rows in WBS):-

=if("wbs"!c2 <> "", "wbs"!c2,vlookup("data"!A2,"wbs"!$a$2:$B$999,2,0))

note that Vlookup always returns the first matching value it comes across so WBS!A needs to be unique and, preferably, sorted
Matt PinkstonEnterprise ArchitectAuthor Commented:
got an error

DATA
A - OppID
C - cell for formula

WBS
A - OppID
B - code1
C - code2

when DATA A has a match in column A in sheet WBS grab column B unless there is a value in column c
Subodh Tiwari (Neeraj)Excel & VBA ExpertCommented:
I doubt if I have understood your requirement correctly...

You may try this to see if this is what you are trying to achieve.

On DATA Sheet,
In B2

=IFERROR(IF(VLOOKUP(A2,WBS!A:C,3,0)<>"",VLOOKUP(A2,WBS!A:C,3,0),VLOOKUP(A2,WBS!A:C,2,0)),"")

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The above formula will look for DATA!A2 in WBS!A:A and if a match found, it will return the corresponding value from WBS!C:C if it is not blank else it will return WBS!B:B and if no match is found it will return a blank.

If this is not you are after, please upload a sample workbook with the desired output shown manually.

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Ryan ChongBusiness Systems Analyst , ex-Senior Application EngineerCommented:
in your Data worksheet, column C1, try put:

= IF( ISERROR(MATCH(A3,WBS!A:A,0)),"",  IF( INDIRECT("WBS!C" &  MATCH(A3,WBS!A:A,0))="",VLOOKUP(A3,WBS!A:C,2,FALSE),VLOOKUP(A3,WBS!A:C,3,FALSE)) )

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regmigrantCommented:
ah - I didn't realise you were trying to choose between formulae. (example workbook would help!).

Ryan's submission is the equivalent
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