Combining multiple columns into single range - google-sheets

I have a sheet with several lists of names like such:
A | B | C
Joe | Steve | Mike
Steve | Dave | Alex
Sarah | Mike | Joe
Beth | Jane | Steve
I'm trying to consolidate all the names in those columns down to a single range (such as can be used by unique()) so that users can be selected from a dropdown.
Adding a multi-column range to unique() returns a multi-column result based on the uniqueness of each multi-column row (i.e. if 'Sarah, Mike, Joe' above were repeated, that would filter down to a single entry in the results)

=UNIQUE(FILTER({A1:A;B1:B;C1:C},{A1:A;B1:B;C1:C}<>""))

=UNIQUE(TRANSPOSE(SPLIT(TEXTJOIN(" ",1,TRANSPOSE(QUERY(TRANSPOSE(A:C),,50000))), " ")))

Related

Google Sheets ArrayFormula that returns an index of the column that matched specified criteria for each row

I've been searching for several hours for what I thought would be a pretty straight forward problem but without any luck.
I need an array formula (needs to calculate for range without copying down the formula) that returns an index reference to the column containing a match for the passed criteria for each row. I don't need the value returned, which is what I've seen related problems solving for, just the column index. I will be using the returned index value to pull data from a bound matrix containing data such as allocated hours. I tried to use MATCH inside an ArrayFormula with a dynamic index for the lookup range but it doesn't increment the row as I would expect. Below is example data with the desired results shown in the first column (technically the results will be returned in a separate worksheet but included here for illustrative purposes), assignee is the criteria for which to find the matching column index across reviewers 1 - 3.
+---------+----------+------------+------------+------------+
| Results | Assignee | Reviewer 1 | Reviewer 2 | Reviewer 3 |
+---------+----------+------------+------------+------------+
| 2 | Paul | Tim | Paul | Sue |
| 1 | Nick | Nick | Linda | Adam |
| 3 | Bill | Ryan | Paul | Bill |
| 2 | Tom | Paul | Tom | Sarah |
+---------+----------+------------+------------+------------+
I've been struggling with this for a while so any guidance would be appreciated!
Try this:
=MMULT(ARRAYFORMULA(--('Table 2'!A3:D7) * --('Table 1'!A3:A7 = 'Table 1'!B3:E7)), SEQUENCE(COLUMNS('Table 1'!B3:E7), 1, 1, 0))
--('Table 2'!A3:D7) - places 0s instead of blanks in table 2 (needed for MMULT).
--('Table 1'!A3:A7 = 'Table 1'!B3:E7) - gives a table with 1s in cells corresponding to current reviewer, and 0s in all the other.
Then those two ranges are multiplied cell by cell. That gives a table with the right hours in cells with the reviewers' names, one value in a row.
MMULT gives a row wise sum, which is effectively a column of those hours from the previous step.
If you'll have a bigger table you'll just need to adjust Table 1'!A3:A7, 'Table 1'!B3:E7, and Table 2'!A3:D7 accordingly. The rest will remain the same.
The best I've been able to come up with so far is this SWITCH statement. It works but not so elegant
=ArrayFormula(SWITCH(Current_Assignee, INDEX(Queue,,1), "1", INDEX(Queue,,2), "2", INDEX(Queue,,3), "3", INDEX(Queue,,4), "4", INDEX(Queue,,5), "5"))

show all results on VLOOKUP

On Google sheets I wish to correlate data from a column, every time its adjacent column has a certain attribute.
For example, Imagine I have a list of pupils and the language that they are studying. In column A is the name of the pupil and in column B is the language:
NAME | LANGUAGE
---------------------------------------------------
John | French
James | Spanish
Stephen | Spanish
Simon | German
Mark | French
Luke | German
Robert | French
I want to generate a new sheet showing the name of each language, with the names of the people who study it in the adjacent columns. It would look something like this:
LANGUAGE | NAMES
---------------------------------------------------
French | John | Mark | Robert
German | Simon | Luke |
Spanish | James | Stephen |
I have tried to achieve this with VLOOKUP however this only returns the first value encountered for each language, rather than all the values.
What is the best way to achieve this?
Assuming 'French' is in cell A2 of Sheet2, in B2 you could try something like
=transpose(filter(Sheet1!$A$2:$A; Sheet1!$B$2:$B=$A2))
and fill down.
(change ranges to suit).
Try QUERY which is so powerful with transpose added too:
=TRANSPOSE(QUERY(Sheet1!A2:ZZ, "SELECT A WHERE B = '"French"'"))

Google Sheets: How to eliminate duplicates in some columns and show only the most recent data in others?

I have a spreadsheet of books, with one row for every time a book was checked out (this is a small classroom library). Here are the columns:
BookTitle | Author | DateCheckedOut | CheckedOutBy | Status
=========================================================================
The BFG | Dahl, Roald | 6/1/2016 | Suzy | Out
The BFG | Dahl, Roald | 4/5/2016 | Johnny | Returned
The BFG | Dahl, Roald | 12/4/2015 | Wendy | Returned
Charlotte's Web | White, E.B. | | | Added
Wonder | Palacio, R.J. | 5/29/2016 | Joey | Returned
Wonder | Palacio, R.J. | 3/21/2016 | Mary | Returned
I want to query it to get only the row with the highest date value for each book and then display all columns of that row except CheckedOutBy.
I wanted to get a list of unique book title / author combinations and then join it with the original table the way I would in DB2, but it seems that joins like that are not possible in Google Sheets. I tried grouping and the max function, but when I get those things to work I either haven't been able to eliminate earlier dates or haven't been able to display columns that aren't being used in the aggregate function. My Google Sheets querying skills are not up to par :/
Is there a simple way to do this that I'm missing? I would appreciate any tips.
Here's a copy of that sample data from above in a Google Sheet.:
https://docs.google.com/spreadsheets/d/1J384S0fsc8tgxVMehPb_uyRNc5-6cQx-xKN-q8K8Gds/edit?usp=sharing
I created a new sheet and entered in cell A1
=ArrayFormula(iferror(vlookup(unique(Sheet1!A2:A), sort(Sheet1!A2:E, 3, 0), {1, 2, 3, 5}, 0)))
See if that works for you ?
BREAKDOWN:
The general idea behind the formula is to make use of the fact that VLOOKUP only returns the first match. We want that 'first match' to be the latest date per book.
So first we sort the table so that the latest dates are on top.
We 'lookup' the unique book titles in that sorted table and we return the columns {1, 2, 3, 5}.
Links:
sort() function
vlookup() function

Structuring a query between multiple tabs to join values by name

I'm trying to write a SQL query in Google Sheets to try and get data for "matching" results from two different tabs, but running into some trouble.
This is a sheet that's basically an automated scoring engine for instructors who take a two-part test (written and practical). After the results are entered, I'd like to use some SQL to take the results from the two tabs and collate them into a final score.
Link to the sheet in question.
There's a "Practical Scores" tab (which takes all the data from the associated Google Form), and a "Written Scores" tab. I'd like to get the name of the instructors who match in both those tabs, and give the associated score for them, but I'm mostly having trouble with writing the correct SQL.
Most of what I'm trying to do is working fine. I'm able to pull the final practical scores via the following SQL:
=query(PracticalScores!A2:E, "select A, count(E),SUM(E)/3 group by A")
I can also pull the written scores as follows:
=query('Written Scores'!B2:C,"select B,C")
But I want the intersection of the two as well, and that's where I'm running into problems.
=query(A8:E, "select A,C,D where A = E")
will simply return the rows where the names match up, and I want the instances where the names match up, regardless of whether the rows do.
That is, I want all the rows where the names match from tab 1 to tab 2 and not just the few rows that happen to line up perfectly.
If I'm not explaining this well, please let me know and I can provide additional information. Any assistance would be very greatly appreciated!
Since the query function does not support joins, this can't all be done in one query. Instead, the following device can be used:
=arrayformula(vlookup(name column, table, # of column to extract, False))
For example, suppose I have a table
+---+-------+---+
| | A | B |
+---+-------+---+
| 2 | Jim | 3 |
| 3 | Sarah | 4 |
| 4 | Bob | 5 |
+---+-------+---+
to which I want to add another column, taking it from
+---+-------+---+
| | E | F |
+---+-------+---+
| 2 | Sarah | 9 |
| 3 | Bob | 8 |
| 4 | Jim | 7 |
+---+-------+---+
The basic idea is to put in cell C2 the formula
=arrayformula(vlookup(A2:A, E2:F, 2, false))
which will look up every name from first table (column A) in the column E, and return the matching value in column F. Result:
+---+-------+---+---+
| | A | B | C |
+---+-------+---+---+
| 2 | Jim | 3 | 7 |
| 3 | Sarah | 4 | 9 |
| 4 | Bob | 5 | 8 |
+---+-------+---+---+
In practice, one should filter out empty lookup values to improve performance:
=arrayformula(vlookup(filter(A2:A, len(A2:A)), E2:F, 2, false))
If the second table contains some names not present in the first, they will not be returned by the above formula. In this case it is better to prepare a full list of names, for example with
=sort(unique({Sheet1!A2:A; Sheet2!A2:A}))
which collects the names from A columns of two sheets, eliminating duplicates and sorting. Then look up those using vlookup as above.

Google Spreadsheets - Join or Concatenate text from multiple rows that have matching values in one of the columns

As the title says, I need to join or concatenate text from multiple rows that have matching values in one of the columns. (Using latest Firefox, Widows 7).
In Sheet1 I have a table that looks like this (sorry if it looks messy - I don't know how to do a neat table on SO):
David | 1 | Blue
Steve | 1 | Green
James | 2 |
Chris | 1 |
Steve | 3 | Blue
Jack | 1 |
Ben | 1 |
James | 1 |
Jack | 2 | Yellow
George | 4 |
In Sheet2, I would like a table that looks like this:
David |1| Blue
Steve |4| Green & Blue
James |3|
Chris |1|
Jack |3| Yellow
Ben |1|
George |4|
Column A show unique values (names) and column B shows the sum for that name.
I have successfully generated columns A and B but I'm having difficulty generating the third column which should return 'Green & Blue' for Steve and 'Yellow' for Jack etc.
Does anyone know how to do this? Your help would be much appreciated.
I have generated Sheet2 columns A and B with the follwing formulas:
Column A: =UNIQUE(Sheet1!A:A)
Column B: =SUMIF(Sheet1!A:A,A1,Sheet1!B:B).
Here is the spreadsheet: https://docs.google.com/spreadsheet/ccc?key=0Avg34WusBUlRdGY1X3BSRlYxaWVkSmo3eVQzYlNvMXc
Thanks for looking.
Use the JOIN function combined with the FILTER function
So in Column C:
=JOIN(" & ",filter(Sheet1!C:C,Sheet1!A:A=A1))
Hope it helps.

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