Creating a list of tasks in a sequence

I

Innoguide

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Sep 13, 2011
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I have 10 tasks that can each be assigned to 1 of ten sequence numbers. If there is more than 1 task assigned to a sequence number those tasks are run in parallel. So there can be anywhere from 1 to 10 tasks assigned to a sequence number but each task can only be assigned once.

The tasks are identified by the task numbers in column B and the sequence for the task is assigned in column A.

Does anyone have any suggestions for a formula in column E that will create a comma-separated list of the tasks assigned to each sequence number?

Note in the example that only 5 of the sequence numbers are used since some of the tasks run in parallel. The unused sequence numbers are blank.

Thanks in advance for any help!
[TABLE="width: 458"]
<tbody>[TR]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD] [TABLE="width: 500"]
<tbody>[TR]
[TD="align: center"][/TD]
[TD="align: center"]A[/TD]
[TD="align: center"]B[/TD]
[TD="align: center"]C[/TD]
[TD="align: center"]D[/TD]
[TD="align: center"]E[/TD]
[/TR]
[TR]
[TD="align: center"]1[/TD]
[TD="align: center"]Assigned Sequence[/TD]
[TD="align: center"]Task Number[/TD]
[TD="align: center"][/TD]
[TD="align: center"]Sequence[/TD]
[TD="align: center"]Task List[/TD]
[/TR]
[TR]
[TD="align: center"]2[/TD]
[TD="align: center"]1[/TD]
[TD="align: center"]212[/TD]
[TD="align: center"][/TD]
[TD="align: center"]1[/TD]
[TD="align: center"]212, 218[/TD]
[/TR]
[TR]
[TD="align: center"]3[/TD]
[TD="align: center"]1[/TD]
[TD="align: center"]218[/TD]
[TD="align: center"][/TD]
[TD="align: center"]2[/TD]
[TD="align: center"]200, 202, 208, 210[/TD]
[/TR]
[TR]
[TD="align: center"]4[/TD]
[TD="align: center"]2[/TD]
[TD="align: center"]200[/TD]
[TD="align: center"][/TD]
[TD="align: center"]3[/TD]
[TD="align: center"]204[/TD]
[/TR]
[TR]
[TD="align: center"]5[/TD]
[TD="align: center"]2[/TD]
[TD="align: center"]202[/TD]
[TD="align: center"][/TD]
[TD="align: center"]4[/TD]
[TD="align: center"]206[/TD]
[/TR]
[TR]
[TD="align: center"]6[/TD]
[TD="align: center"]2[/TD]
[TD="align: center"]208[/TD]
[TD="align: center"][/TD]
[TD="align: center"]5[/TD]
[TD="align: center"]214, 216[/TD]
[/TR]
[TR]
[TD="align: center"]7[/TD]
[TD="align: center"]2[/TD]
[TD="align: center"]210[/TD]
[TD="align: center"][/TD]
[TD="align: center"]6[/TD]
[TD="align: center"][/TD]
[/TR]
[TR]
[TD="align: center"]8[/TD]
[TD="align: center"]3[/TD]
[TD="align: center"]204[/TD]
[TD="align: center"][/TD]
[TD="align: center"]7[/TD]
[TD="align: center"][/TD]
[/TR]
[TR]
[TD="align: center"]9[/TD]
[TD="align: center"]4[/TD]
[TD="align: center"]206[/TD]
[TD="align: center"][/TD]
[TD="align: center"]8[/TD]
[TD="align: center"][/TD]
[/TR]
[TR]
[TD="align: center"]10[/TD]
[TD="align: center"]5[/TD]
[TD="align: center"]214[/TD]
[TD="align: center"][/TD]
[TD="align: center"]9[/TD]
[TD="align: center"][/TD]
[/TR]
[TR]
[TD="align: center"]11[/TD]
[TD="align: center"]5[/TD]
[TD="align: center"]216[/TD]
[TD="align: center"][/TD]
[TD="align: center"]10[/TD]
[TD][/TD]
[/TR]
</tbody>[/TABLE]
[/TD]
[/TR]
</tbody>[/TABLE]
 
Last edited:

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Use =VLOOKUP(A2,CHOOSE({1,2},$Z$1:$Z$99,$Y$1:$Y$99),2,False) to lookup Y values to left of Z values.
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You require Excel 2016 for this solution because it uses the new function TEXTJOIN.

ABCDE
Assigned SequenceTask NumberSequenceTask List

<colgroup><col style="width: 25pxpx"><col><col><col><col><col></colgroup><thead>
</thead><tbody>
[TD="align: center"]1[/TD]

[TD="align: right"][/TD]

[TD="align: center"]2[/TD]
[TD="align: right"]1[/TD]
[TD="align: right"]212[/TD]
[TD="align: right"][/TD]
[TD="align: right"]1[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=E2EFDA]#E2EFDA[/URL] "]212, 218[/TD]

[TD="align: center"]3[/TD]
[TD="align: right"]1[/TD]
[TD="align: right"]218[/TD]
[TD="align: right"][/TD]
[TD="align: right"]2[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=E2EFDA]#E2EFDA[/URL] "]200, 202, 208, 210[/TD]

[TD="align: center"]4[/TD]
[TD="align: right"]2[/TD]
[TD="align: right"]200[/TD]
[TD="align: right"][/TD]
[TD="align: right"]3[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=E2EFDA]#E2EFDA[/URL] , align: right"]204[/TD]

[TD="align: center"]5[/TD]
[TD="align: right"]2[/TD]
[TD="align: right"]202[/TD]
[TD="align: right"][/TD]
[TD="align: right"]4[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=E2EFDA]#E2EFDA[/URL] , align: right"]206[/TD]

[TD="align: center"]6[/TD]
[TD="align: right"]2[/TD]
[TD="align: right"]208[/TD]
[TD="align: right"][/TD]
[TD="align: right"]5[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=E2EFDA]#E2EFDA[/URL] "]214, 216[/TD]

[TD="align: center"]7[/TD]
[TD="align: right"]2[/TD]
[TD="align: right"]210[/TD]
[TD="align: right"][/TD]
[TD="align: right"]6[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=E2EFDA]#E2EFDA[/URL] "][/TD]

[TD="align: center"]8[/TD]
[TD="align: right"]3[/TD]
[TD="align: right"]204[/TD]
[TD="align: right"][/TD]
[TD="align: right"]7[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=E2EFDA]#E2EFDA[/URL] "][/TD]

[TD="align: center"]9[/TD]
[TD="align: right"]4[/TD]
[TD="align: right"]206[/TD]
[TD="align: right"][/TD]
[TD="align: right"]8[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=E2EFDA]#E2EFDA[/URL] "][/TD]

[TD="align: center"]10[/TD]
[TD="align: right"]5[/TD]
[TD="align: right"]214[/TD]
[TD="align: right"][/TD]
[TD="align: right"]9[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=E2EFDA]#E2EFDA[/URL] "][/TD]

[TD="align: center"]11[/TD]
[TD="align: right"]5[/TD]
[TD="align: right"]216[/TD]
[TD="align: right"][/TD]
[TD="align: right"]10[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=E2EFDA]#E2EFDA[/URL] "][/TD]

</tbody>
Sheet33​

[TABLE="width: 85%"]
<tbody>[TR]
[TD]Array Formulas[TABLE="width: 100%"]
<thead>[TR="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=DAE7F5]#DAE7F5[/URL] "]
[TH="width: 10"]Cell[/TH]
[TH="align: left"]Formula[/TH]
[/TR]
</thead><tbody>[TR]
[TH="width: 10, bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=DAE7F5]#DAE7F5[/URL] "]E2[/TH]
[TD="align: left"]{=TEXTJOIN(", ",,IF($A$2:$A$11=D2,$B$2:$B$11,""))}[/TD]
[/TR]
</tbody>[/TABLE]
Entered with Ctrl+Shift+Enter. If entered correctly, Excel will surround with curly braces {}.
Note: Do not try to enter the {} manually yourself[/TD]
[/TR]
</tbody>[/TABLE]
 
Upvote 0
Wow DR Steele- very elegant solution. Works perfectly!

Thanks!

DRSteele said:
You require Excel 2016 for this solution because it uses the new function TEXTJOIN.

ABCDE
Assigned SequenceTask NumberSequenceTask List
212, 218
200, 202, 208, 210
214, 216

<tbody>
[TD="align: center"]1[/TD]

[TD="align: right"][/TD]

[TD="align: center"]2[/TD]
[TD="align: right"]1[/TD]
[TD="align: right"]212[/TD]
[TD="align: right"][/TD]
[TD="align: right"]1[/TD]

[TD="align: center"]3[/TD]
[TD="align: right"]1[/TD]
[TD="align: right"]218[/TD]
[TD="align: right"][/TD]
[TD="align: right"]2[/TD]

[TD="align: center"]4[/TD]
[TD="align: right"]2[/TD]
[TD="align: right"]200[/TD]
[TD="align: right"][/TD]
[TD="align: right"]3[/TD]
[TD="align: right"]204[/TD]

[TD="align: center"]5[/TD]
[TD="align: right"]2[/TD]
[TD="align: right"]202[/TD]
[TD="align: right"][/TD]
[TD="align: right"]4[/TD]
[TD="align: right"]206[/TD]

[TD="align: center"]6[/TD]
[TD="align: right"]2[/TD]
[TD="align: right"]208[/TD]
[TD="align: right"][/TD]
[TD="align: right"]5[/TD]

[TD="align: center"]7[/TD]
[TD="align: right"]2[/TD]
[TD="align: right"]210[/TD]
[TD="align: right"][/TD]
[TD="align: right"]6[/TD]

[TD="align: center"]8[/TD]
[TD="align: right"]3[/TD]
[TD="align: right"]204[/TD]
[TD="align: right"][/TD]
[TD="align: right"]7[/TD]

[TD="align: center"]9[/TD]
[TD="align: right"]4[/TD]
[TD="align: right"]206[/TD]
[TD="align: right"][/TD]
[TD="align: right"]8[/TD]

[TD="align: center"]10[/TD]
[TD="align: right"]5[/TD]
[TD="align: right"]214[/TD]
[TD="align: right"][/TD]
[TD="align: right"]9[/TD]

[TD="align: center"]11[/TD]
[TD="align: right"]5[/TD]
[TD="align: right"]216[/TD]
[TD="align: right"][/TD]
[TD="align: right"]10[/TD]

</tbody>
Sheet33​

[TABLE="width: 85%"]
<tbody>[TR]
[TD]Array Formulas[TABLE="width: 100%"]
<tbody>[TR]
[TH="width: 10"]Cell[/TH]
[TH="align: left"]Formula[/TH]
[/TR]
[TR]
[TH="width: 10"]E2[/TH]
[TD="align: left"]{=TEXTJOIN(", ",,IF($A$2:$A$11=D2,$B$2:$B$11,""))}[/TD]
[/TR]
</tbody>[/TABLE]
Entered with Ctrl+Shift+Enter. If entered correctly, Excel will surround with curly braces {}.
Note: Do not try to enter the {} manually yourself[/TD]
[/TR]
</tbody>[/TABLE]
Click to expand...
 
Last edited:
Upvote 0
OK - This is strange. The formula works fine the first time, but it is not updating when I change the sequence numbers in column A

Calculation is set to auto and I've tried "Calculate Now", but the formula will not update unless I copy the cells over again.

DRSteele said:
Splendid. You're welcome.
Click to expand...
 
Upvote 0
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