But he has a way to deal with the wrong answers. See if the result is what you were looking up in the first place. On the face of it, this seems insane. Note that while most lookup tables do not have to be sorted, when you are using True as the fourth argument, the table does have to be sorted.
Thanks to Charles Williams for teaching me this feature and to Scott St. Amant for nominating it for a top 40 tip. Download the sample file here: Podcast This is a 5th edition of MrExcel XL. Note I learned the following trick from Charles Williams. Learn Excel from MrExcel Podcast episode faster vlookup I'm podcasting all of the tips in this book click the I on the top right hand corner to get to the watch list hey welcome back to the mr. Because the formula is entered just in one cell, you needn't worry about locking the ranges with absolute references.
As for performance, dynamic arrays work even faster than Excel tables! Half a million cells are filled with the results almost immediately: 1. In-depth tutorial : Excel dynamic arrays, functions and formulas.
For the sake of completeness, let's test one more possible solution for our task - Power Query. Of course, it's not quite correct to compare the calculation of formulas with updating the query, but I am just curious which is faster :. The detailed steps of using Power Query are described in a separate tutorial mentioned below. Here, we will just evaluate the result:. The merged table has loaded from the Power Query Editor into Excel in 8. Unlike formulas, queries do not update automatically.
After each change in the source data, you have to update the resulting table manually by clicking the Refresh button on either the Data or Query tab. Our , rows are refreshed in about 7 seconds.
Not bad, but Excel formulas can do better. Considering that setting up a query is far from being a one-click process, this is probably the last method I would use, only if nothing else works. In-depth tutorial : How to combine tables with Excel Power Query. The users of our Ultimate Suite has one more tool in their Excel toolbox to merge two tables based on a common column.
Let's see how it compares with Excel's one. And then, just follow the steps of the wizard, and it will walk you through the process. Having a closer look at the message above, you may notice that not all the matches were found. It does not mean, however, that the tool is flawed. It just lets you know that some items lookup values do not exist in the lookup table. More information : Merge two tables in Excel. If you carefully read though all the examples, then most likely you have already drawn your own conclusions.
If you skipped the details, then you can find a quick summary in this comparison table:. Below, there are a few observations that I made based on the test results. Perhaps, they will be useful for you too. It will search through each record one-by-one until it finds a match. Using an approximate match i. An approximate match only works with sorted data but can find the lookup value faster. However, if the lookup value is not in the list it will return an incorrect result.
This trick involves combining two approximate matches together to return the equivalent of an exact match. If it finds an exact match it will return the lookup value, otherwise it will return a different value.
The returned value is compared to the original lookup value. If it is the same i. We already know that an exact match exists, so it will return the correct value from the column number identified. This formula may seem like an over-complication. If your worksheet is calculating quickly, then Yes, it probably is. However, a slow calculating worksheet can waste a lot of time. So, if your worksheet is slow, this formula can create significant speed benefits.
I carried out a few speed tests. Average times over 5 tests were:.
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