In sheet 1 I have  4 columns (A is empty , B,C,D)
in sheet 2 I have 3 columns (A,B,C)
in sheet 3 I have 3 columns (A,B,C)
in sheet 4 I have 3 columns (A,B,C)
how use VLOOKUP:
in sheet 1 B15=”Smith”
if (in sheet 2 AND sheet 3 AND sheet 4)  not exist “Smith”  in column A THEN in sheet 1 , A15  still empty.
if (in sheet 2 AND sheet 3 AND sheet 4)  find  “Smith” in column A  then take the city from column B and put in the sheet 1 in column A (A15=”London”)
thank you for your attention
