Finding Duplicates on entire sheet

psycoperl · Dec 13, 2022

I am working on a seating chart for an event that has assigned seating. I would like to ensure that I am not putting someone into two different seats.

For example the value of

Each value in the following ranges should be unique and only appear 1 time in the entire sheet. B7:AJ7, B12:AJ12; B17:AJ17; B22:AJ22; B27:AJ27; B32:AJ32; B36:AJ36; B42:AJ42; B47:AJ47; B52:AJ52; B57:AJ57; B62:AJ62; B67:AJ67; B72:AJ72; B77:AJ77; and B82:AJ82

How can I do this?

etaf · Dec 13, 2022

whats in the other cells -
can we use the entire range - B7:AJ82

or will there normally be duplicates ?

could you use conditional formatting to highlight

Book3

A

B

C

D

E

F

G

H

I

J

K

9

10

11

12

13

a

14

x

b

15

16

c

17

x

a

18

19

20

21

Sheet1

Cells with Conditional Formatting
Cell	Condition		Cell Format	Stop If True
B12:H18	Expression	=COUNTIF($B$12:$H$18,B12)>1	text	YES

Note: Images are difficult to see , and also requires that I input all the data myself, which means I may make an error, which is very time consuming, and from my point of view less likely to get a response, if a complicated spreadsheet. Plus we cannot see any of the formulas used.

Therefore -

A SMALL sample spreadsheet, around 10-20 rows, would help a lot here, with all sensitive data removed, and expected results mocked up and manually entered, with a few notes of explanation.

MrExcel has a tool called “XL2BB” that lets you post samples of your data and will allow us to copy/paste your sample data into our Excel spreadsheets, saving a lot of time.

XL2BB - Excel Range to BBCode

Excel 'mini-sheet' in messages - XL2BB Although experts prefer to read your description and question instead of working in your actual file to solve your problem, there are times that it is difficult to explain an issue without providing actual...

www.mrexcel.com

You can also test to see if it works ok, in the "Test Here" forum.

Test Here

Use this forum to test your signature, learn bbcode, smilies, XL2BB, etc. Threads in this forum are automatically deleted after no replies for seven (7) days

www.mrexcel.com

OR if you cannot get XL2BB to work, or have restrictions on your PC , then put the sample spreadsheet onto a share
I only tend to goto OneDrive, Dropbox or google docs , as I'm never certain of other random share sites and possible virus.
Please make sure you have a representative data sample and also that the data has been desensitised, remember this site is open to anyone with internet access to see - so any sensitive / personal data should be removed

psycoperl · Dec 13, 2022

The "Subject" Rows will have duplicats and the rows above "ROW [?]" also have duplicates as that has the initial seat numbers.

Here is a sample of the document. It is only columns A-O due to the limits of number of cells that XL2BB allows.

Book1

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

1

Session

DAY

Room

B5150

2

ZONE

LFT

CTR

3

4

1

2

3

4

5

6

5

ROW [P]

6

Subject [P]

7

App [P]

8

9

1

2

3

4

5

6

7

8

10

ROW [O]

11

Subject [O]

12

App [O]

13

14

1

2

3

4

5

6

7

8

9

10

11

12

13

15

ROW [N]

16

Subject [N]

17

App [N]

18

19

1

2

3

4

5

6

7

8

9

10

11

12

13

20

ROW [M]

21

Subject [M]

22

App [M]

23

24

1

2

3

4

5

6

7

8

9

10

11

12

13

25

ROW [L]

26

Subject [L]

27

App [L]

28

29

1

2

3

4

5

6

7

8

9

10

11

12

13

30

ROW [K]

31

Subject [K]

32

App [K]

33

34

1

2

3

4

5

6

7

8

9

10

11

12

13

35

ROW [J]

36

Subject [J]

37

App [J]

38

39

1

2

3

4

5

6

7

8

9

10

11

12

13

40

ROW

Sheet1

Cell Formulas
Range Formula
B5:I5,K80:O80,B80:I80,K75:O75,B75:I75,K70:O70,B70:I70,K65:O65,B65:I65,K60:O60,B60:I60,K55:O55,B55:I55,K50:O50,B50:I50,K45:O45,B45:I45,K40:O40,B40:I40,K35:O35,B35:I35,K30:O30,B30:I30,K25:O25,B25:I25,K20:O20,B20:I20,K15:O15,B15:I15,B10:I10 B5 =CONCAT($C$1,"/", $E$1, "-", B$2, " ", MID($A5,6,1), "-", TEXT(B4,"00"))
B6:I6,K81:O81,B81:I81,K76:O76,B76:I76,K71:O71,B71:I71,K66:O66,B66:I66,K61:O61,B61:I61,K56:O56,B56:I56,K51:O51,B51:I51,K46:O46,B46:I46,K41:O41,B41:I41,K36:O36,B36:I36,K31:O31,B31:I31,K26:O26,B26:I26,K21:O21,B21:I21,K16:O16,B16:I16,K11:O11,B11:I11 B6 =MID(B7,6,3)
Cells with Data Validation
Cell Allow Criteria
B82:I82 List =Sheet3!$A$2:$A$69
K82:O82 List =Sheet3!$A$2:$A$69
B77:I77 List =Sheet3!$A$2:$A$69
K77:O77 List =Sheet3!$A$2:$A$69
B72:I72 List =Sheet3!$A$2:$A$69
K72:O72 List =Sheet3!$A$2:$A$69
B67:I67 List =Sheet3!$A$2:$A$69
K67:O67 List =Sheet3!$A$2:$A$69
B62:I62 List =Sheet3!$A$2:$A$69
K62:O62 List =Sheet3!$A$2:$A$69
B57:I57 List =Sheet3!$A$2:$A$69
K57:O57 List =Sheet3!$A$2:$A$69
B52:I52 List =Sheet3!$A$2:$A$69
K52:O52 List =Sheet3!$A$2:$A$69
B47:I47 List =Sheet3!$A$2:$A$69
K47:O47 List =Sheet3!$A$2:$A$69
B42:I42 List =Sheet3!$A$2:$A$69
K42:O42 List =Sheet3!$A$2:$A$69
B37:I37 List =Sheet3!$A$2:$A$69
K37:O37 List =Sheet3!$A$2:$A$69
B32:I32 List =Sheet3!$A$2:$A$69

etaf · Dec 13, 2022

possibly needs VBA - contiguous ranges with countif - use indirect() which dont work in conditional formatting
however - what rows on the sample have the and what do you enter - when you assign seats

I would like to ensure that I am not putting someone into two different seats.

in case i can work something out , maybe even flagging the Row - WOULD conditional formatting work - if not then we can leave
VBA would be able to data validation and NOT allow the entry to be put in - so that maybe a better solution

psycoperl · Dec 13, 2022

psycoperl said:
B7:AJ7,

etaf said:
possibly needs VBA - contiguous ranges with countif - use indirect() which dont work in conditional formatting
however - what rows on the sample have the and what do you enter - when you assign seats

in case i can work something out , maybe even flagging the Row - WOULD conditional formatting work - if not then we can leave
VBA would be able to data validation and NOT allow the entry to be put in - so that maybe a better solution

I was able to get it working based on your idea before

Book1

A

B

C

D

E

F

68

69

1

2

3

4

5

70

ROW [C]

71

Subject [C]

FRE

MKT

72

App [C]

0143 FRE 1002 QTRA A-60

0020 MKT 3000 DMWA A-60

73

74

1

2

3

4

5

75

ROW

Sheet1

Cell Formulas
Range Formula
B70:F70,B80:F80,B75:F75 B70 =CONCAT($C$1,"/", $E$1, "-", B$2, " ", MID($A70,6,1), "-", TEXT(B69,"00"))
B71:F71,B81:F81,B76:F76 B71 =MID(B72,6,3)
Cells with Conditional Formatting
Cell Condition Cell Format Stop If True
B82:AJ82,B77:AJ77,B72:AJ72,B67:AJ67,B62:AJ62,B57:AJ57,B52:AJ52,B47:AJ47,B42:AJ42,B37:AJ37,B32:AJ32,B27:AJ27,B22:AJ22,B17:AJ17,B12:AJ12,B7:AJ7 Expression =SUM(COUNTIFS($B$82:$AJ$82,B7),COUNTIFS($B$77:$AJ$77,B7), COUNTIFS($B$72:$AJ$72,B7), COUNTIFS($B$67:$AJ$67,B7), COUNTIFS($B$62:$AJ$62,B7), COUNTIFS($B$57:$AJ$57,B7), COUNTIFS($B$52:$AJ$52,B7), COUNTIFS($B$47:$AJ$47,B7), COUNTIFS($B$42:$AJ$42,B7), COUNTIFS($B$37:$AJ$37,B7), COUNTIFS($B$32:$AJ$32,B7), COUNTIFS($B$27:$AJ$27,B7), COUNTIFS($B$22:$AJ$22,B7), COUNTIFS($B$17:$AJ$17,B7), COUNTIFS($B$12:$AJ$12,B7), COUNTIFS($B$7:$AJ$7,B7))>1 text NO
B82:AJ82,B77:AJ77,B72:AJ72,B67:AJ67,B62:AJ62,B57:AJ57,B52:AJ52,B47:AJ47,B42:AJ42,B37:AJ37,B32:AJ32,B27:AJ27,B22:AJ22,B17:AJ17,B12:AJ12,B7:AJ7 Expression =SUM(COUNTIFS($B$82:$AJ$82,B7),COUNTIFS($B$77:$AJ$77,B7), COUNTIFS($B$72:$AJ$72,B7), COUNTIFS($B$67:$AJ$67,B7), COUNTIFS($B$62:$AJ$62,B7), COUNTIFS($B$57:$AJ$57,B7), COUNTIFS($B$52:$AJ$52,B7), COUNTIFS($B$47:$AJ$47,B7), COUNTIFS($B$42:$AJ$42,B7), COUNTIFS($B$37:$AJ$37,B7), COUNTIFS($B$32:$AJ$32,B7), COUNTIFS($B$27:$AJ$27,B7), COUNTIFS($B$22:$AJ$22,B7), COUNTIFS($B$17:$AJ$17,B7), COUNTIFS($B$12:$AJ$12,B7), COUNTIFS($B$7:$AJ$7,B7))=1 text NO
Cells with Data Validation
Cell Allow Criteria
B82:F82 List =Sheet3!$A$2:$A$69
B77:F77 List =Sheet3!$A$2:$A$69
B72:F72 List =Sheet3!$A$2:$A$69

psycoperl · Dec 13, 2022

psycoperl said:
B7:AJ7,

etaf said:
possibly needs VBA - contiguous ranges with countif - use indirect() which dont work in conditional formatting
however - what rows on the sample have the and what do you enter - when you assign seats

in case i can work something out , maybe even flagging the Row - WOULD conditional formatting work - if not then we can leave
VBA would be able to data validation and NOT allow the entry to be put in - so that maybe a better solution

I was able to get it working based on your idea before

Book1

A

B

C

D

E

F

79

1

2

3

4

5

80

ROW [A]

81

Subject [A]

MKT

BUS

82

App [A]

0097 MKT 3000 DMWA A-60

0027 BUS 2000 KWL A-60

83

Sheet1

Cell Formulas
Range	Formula
B80:F80	B80	=CONCAT($C$1,"/", $E$1, "-", B$2, " ", MID($A80,6,1), "-", TEXT(B79,"00"))
B81:F81	B81	=MID(B82,6,3)

Cells with Conditional Formatting
Cell	Condition		Cell Format	Stop If True
B82:AJ82,B77:AJ77,B72:AJ72,B67:AJ67,B62:AJ62,B57:AJ57,B52:AJ52,B47:AJ47,B42:AJ42,B37:AJ37,B32:AJ32,B27:AJ27,B22:AJ22,B17:AJ17,B12:AJ12,B7:AJ7	Expression	=SUM(COUNTIFS($B$82:$AJ$82,B7),COUNTIFS($B$77:$AJ$77,B7), COUNTIFS($B$72:$AJ$72,B7), COUNTIFS($B$67:$AJ$67,B7), COUNTIFS($B$62:$AJ$62,B7), COUNTIFS($B$57:$AJ$57,B7), COUNTIFS($B$52:$AJ$52,B7), COUNTIFS($B$47:$AJ$47,B7), COUNTIFS($B$42:$AJ$42,B7), COUNTIFS($B$37:$AJ$37,B7), COUNTIFS($B$32:$AJ$32,B7), COUNTIFS($B$27:$AJ$27,B7), COUNTIFS($B$22:$AJ$22,B7), COUNTIFS($B$17:$AJ$17,B7), COUNTIFS($B$12:$AJ$12,B7), COUNTIFS($B$7:$AJ$7,B7))>1	text	NO
B82:AJ82,B77:AJ77,B72:AJ72,B67:AJ67,B62:AJ62,B57:AJ57,B52:AJ52,B47:AJ47,B42:AJ42,B37:AJ37,B32:AJ32,B27:AJ27,B22:AJ22,B17:AJ17,B12:AJ12,B7:AJ7	Expression	=SUM(COUNTIFS($B$82:$AJ$82,B7),COUNTIFS($B$77:$AJ$77,B7), COUNTIFS($B$72:$AJ$72,B7), COUNTIFS($B$67:$AJ$67,B7), COUNTIFS($B$62:$AJ$62,B7), COUNTIFS($B$57:$AJ$57,B7), COUNTIFS($B$52:$AJ$52,B7), COUNTIFS($B$47:$AJ$47,B7), COUNTIFS($B$42:$AJ$42,B7), COUNTIFS($B$37:$AJ$37,B7), COUNTIFS($B$32:$AJ$32,B7), COUNTIFS($B$27:$AJ$27,B7), COUNTIFS($B$22:$AJ$22,B7), COUNTIFS($B$17:$AJ$17,B7), COUNTIFS($B$12:$AJ$12,B7), COUNTIFS($B$7:$AJ$7,B7))=1	text	NO

Cells with Data Validation
Cell	Allow	Criteria
B82:F82	List	=Sheet3!$A$2:$A$69

etaf · Dec 13, 2022

ok, excellent, glad to have helped / pointed you in the right direction to solve

Finding Duplicates on entire sheet

psycoperl

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XL2BB - Excel Range to BBCode

Test Here

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Cell Formulas
Range	Formula
B5:I5,K80:O80,B80:I80,K75:O75,B75:I75,K70:O70,B70:I70,K65:O65,B65:I65,K60:O60,B60:I60,K55:O55,B55:I55,K50:O50,B50:I50,K45:O45,B45:I45,K40:O40,B40:I40,K35:O35,B35:I35,K30:O30,B30:I30,K25:O25,B25:I25,K20:O20,B20:I20,K15:O15,B15:I15,B10:I10	B5	=CONCAT($C$1,"/", $E$1, "-", B$2, " ", MID($A5,6,1), "-", TEXT(B4,"00"))
B6:I6,K81:O81,B81:I81,K76:O76,B76:I76,K71:O71,B71:I71,K66:O66,B66:I66,K61:O61,B61:I61,K56:O56,B56:I56,K51:O51,B51:I51,K46:O46,B46:I46,K41:O41,B41:I41,K36:O36,B36:I36,K31:O31,B31:I31,K26:O26,B26:I26,K21:O21,B21:I21,K16:O16,B16:I16,K11:O11,B11:I11	B6	=MID(B7,6,3)

Cell Formulas
Range	Formula
B70:F70,B80:F80,B75:F75	B70	=CONCAT($C$1,"/", $E$1, "-", B$2, " ", MID($A70,6,1), "-", TEXT(B69,"00"))
B71:F71,B81:F81,B76:F76	B71	=MID(B72,6,3)

Finding Duplicates on entire sheet

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