If book2 is array Sheet2!A1:A100 try the below formula ..
Lookup value in cell A1 is from book no 1 .

=VLOOKUP("*" & LEFT(A1 & "-",FIND("-",A1)-1) & "*",Sheet2!A1:A100,1,0)

If this post helps click Yes
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Jacob Skaria


"ideasailer" wrote:

I have two wok book. in one there are a lot of nos like
book no1
321127
92117-0002
in other book2
321127-00
0092117-02
how can we use vlook up