 # Lookup and Reference function

In this article, we will learn How to Lookup and Reference functions in Excel. If you have multiple excel tables and you want to do a dynamic VLOOKUP Function from these tables, you will need to use the INDIRECT function. In this article we will learn how easily you can change your lookup table by just changing the name of the lookup table in a cell.

Generic Formula for Dynamic Table VLOOKUP

 =VLOOKUP(lookup_value, INDIRECT("TableName"), col_index,0)

Lookup_value: The value you are looking for.

TableName: The table in which you want to look for the lookup value.

Col_Index: The column number from which you want to retrieve data.

Let's hope on to an example to see how it works.

Example: Create A Dynamic Lookup Formula To Look Up From Selected Table Here we have two tables of the same employees. First table is named South and contains data of employees assigned in South cities. Second table is named West and contains the details of the same employees when assigned in cities of West.

Now we need to get the cities of employees at the same place from both regions.

As you can see in the image, we have prepared a table down. It contains the ids of employees. We need to get the cities from South and West using one single formula.

Apply above generic formula to write this formula for dynamic VLOOKUP:

 =VLOOKUP(\$A24,INDIRECT(B\$23),3,0)

We have locked the references using \$ sign so that when we copy the formula it takes the right references.

 If you aren't familiar with reference locking or absolution, you learn it here. It is really important if you want to master Excel.

Write the above formula in cell B24, copy in whole range. You can see that it has looked up the city of South from the South table and City of West from the West table, dynamically. We did not need to change anything in the formula.

How does it work?

It is a basic VLOOKUP formula with only difference of INDIRECT function. As you know that INDIRECT function converts any text reference into actual reference, we use the same ability of INDIRECT function here.

It is important that you use an Excel Table or name your tables using named ranges.

In B24, we have formula VLOOKUP(\$A24,INDIRECT(B\$23),3,0). This resolves to VLOOKUP(\$A24,INDIRECT("South"),3,0). Now indirect converts "South" into actual table reference (we have named the first table as South. Hence the formula is now VLOOKUP(\$A24,South,3,0). Now VLOOKUP simply looks up in the SOUTH table.

When we copy formulas in C24, the formula becomes VLOOKUP(\$A24,INDIRECT(C\$23),3,0). Now C23 contains "West". Hence the formula will ultimately resolve to VLOOKUP(\$A24,West,3,0). And VLOOKUP gets the value from the West table this time.

Hope this article about How to Lookup and Reference function in Excel is explanatory. Find more articles on lookup formulas and related Excel formulas here. If you liked our blogs, share it with your friends on Facebook. And also you can follow us on Twitter and Facebook. We would love to hear from you, do let us know how we can improve, complement or innovate our work and make it better for you. Write to us at info@exceltip.com.

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