## Forum Discussion

# Find Common Values In ALL 5 Columns With Array Formulas

Hello,

I have test data of 101 rows containing 3 or 4 Alphabet symbols in 5 columns. Some of these 3 or 4 letter symbols can be found across all 5 columns though not in the same row e.g. "BDRY" can be found in all columns but in different rows when eyeballing each column. My intent is to programmatically find all such values across all 5 columns because the values in each of the cells can change. Also note, all 5 columns have been sorted A-Z individually.

I think I have got close with this formula but cannot figure out the >0,1,0 or =2,0,1 which are arrays for 3 columns which is perhaps why I am getting an error (0 value across all values ).

My intention is to compared all 5 columns. Can someone please correct this formula? Test file (Test_data.xls) attached)

=INDEX($A$2:$A$101,MATCH(0,COUNTIF($F$2:F2,$A$2:$A$101)+IF(IF(COUNTIF($B$2:$B$101,$A$2:$A$101)>0,1,0)+IF(COUNTIF($C$2:$C$101,$A$2:$A$101)>0,1,0)+IF(COUNTIF($D$2:$D$101,$A$2:$A$101)>0,1,0)+IF(COUNTIF($E$2:$E$101,$A$2:$A$101)>0,1,0)=2,0,1),0))

Regards,

Amlesh

Amlesh7400 Perhaps easiest with Power Query. In the attached workbook you'll find a sheet called "Count". I trust you can do your analysis from there.

- PeterBartholomew1Silver Contributor
Since you are using Excel 365, you could list the codes that appear in each column using

`= LET( n, ROWS(Table1), k, SEQUENCE(5*n,,0), c, 1+MOD(k,5), r, 1+QUOTIENT(k,5), unpivoted, INDEX(Table1,r,c), distinct, SORT(UNIQUE(unpivoted)), FILTER(distinct, COUNTIFS(Table1,distinct)=5))`

With Insider beta channel the unwieldly unpivoting step can be hidden within a Lambda function

`= LAMBDA(tbl, LET( n, ROWS(Table1), k, SEQUENCE(5*n,,0), c, 1+MOD(k,5), r, 1+QUOTIENT(k,5), unpivotted, INDEX(Table1,r,c), SORT(UNIQUE(unpivotted))) )`

to give

`= LET( distinct, UNPIVOTλ(Table1), count, COUNTIFS(Table1, distinct), FILTER(distinct, count=5))`

- Amlesh7400Copper Contributor
Thank You. My skills in Excel are limited to using basic formulas so would like to know whether I have to input this "policy" (looks like AWS type policy to me) in power query? or is the "LET" formula to be created?

- PeterBartholomew1Silver Contributor
The formulas are straightforward worksheet formulas (OK, perhaps not so straightforward). The LET function, and now the LAMBDA function (available within the beta channel), are somewhat 'work in progress' that is building towards Excel as a full-blown software development platform!

I hope I have not created too much confusion; I realise that this is not what a typical Excel user expects to see!

Notes: the open and closed circles are conditional formats designed to highlight 'count=5'.

The small filtered table uses a Lambda function to 'hide' the calculation complexity.

- Riny_van_EekelenPlatinum Contributor
Amlesh7400 Perhaps easiest with Power Query. In the attached workbook you'll find a sheet called "Count". I trust you can do your analysis from there.

- Amlesh7400Copper ContributorRiny_van_Eekelen Thank you very much. if possible, can you share the Power Query so i can output a new excel file anytime the cell values change?

Regards,- Riny_van_EekelenPlatinum Contributor
Amlesh7400 Well, the query that generates the table is in the file that is attached to my previous post. Depending on your Excel version you may have a separate Power Query tab/ribbon or you'll find the tools needed on the Data ribbon under "Get & Transform Data".

The steps applied to achieve the output aren't very complicated, that is, if you are familiar with Power Query. Otherwise you may get lost in all the options and icons.

- Paul_SheppardCopper Contributor
Hi Riny

I found the test data file you produced for Amlesh and it is almost the perfect solution for something I am trying to do, but I only have data in 3 columns

I have never used Power Query until a couple of hours ago, but have managed to reduce the table on the Data sheet to 3 columns and on the Count sheet to 5, to match my needs

I have changed the Column Names on columns c to E on the Count Sheet but cannot change the names of the Columns on the Data sheet, when I do change them I get an error message [Expression.Error]The column '5-Day' of the table wasn't found

How do I change the Column Names without getting this error?

- Riny_van_EekelenPlatinum Contributor
Paul_Sheppard Welcome to the "World of PQ".

Changing the column headers in the Count sheet is meaningless as a Refresh will use the headers that PQ finds in the Data table.

Change the column names in the Data sheet, and make some small adjustments to the query.

After the "Promoted Headers" step you see whatever column names you have given. The next step inserts a sum of a number of columns who's names are hard-coded in the query. And in the next step these columns are reordered, again with the hard-coded column names.

This query was in fact a bit sloppy but it worked at the time.

You can delete these last two steps and create your own Count. Select the columns you want to sum, and on the Add Column tab press this icon

PQ will automatically generate the correct code with the correct column names. Next, drag the columns in place to reorder them. Same thing het. The code is written automatically,

See if you can get it to work.

This site will help you get to grips with PQ, by the way.

https://exceloffthegrid.com/power-query-introduction/