Dynamic Varible in the table

[JHE]

I have table A:

i	variable
1	x1
1	x2
1	x3
1	x4
1	x5
1	xi

How to have table B as :

i	variable
1	x1,x2,x3,x4,x5..xi

the problem is , 'xi' , 'i'  isdynamic value, from Proc Transpose Prefix option.

I need to know  HOW  from table A to B, and handle xi dynamically.

Thank you

[PaigeMiller]

PROC TRANSPOSE is dynamic, there is no need for you to program the dynamic aspect of this operation.

[JHE]

PROC Transpose the dynamic aspect of this operation result is multiple rows,

I need concatenate x1,x2,x3,x4..xi   to one record - one row  separated by ','.

[PaigeMiller]

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@JHE wrote:

I need concatenate x1,x2,x3,x4..xi   to one record - one row  separated by ','.

---

It's hard to imagine any useful reason to create this variable as a concatenation of the variable names.

[Reeza]

I don’t understand the issue you’re facing. Can you explain in more detail?

[JHE]

When I have table A as PROC Transpose result.

Next step need to have table B .

How to have Table B from Table A

After Proc Transpose I have Table A, how many rows are unknown . ...'xi'. But customer need to concatenate xi rows to one recode--- one row.

[Reeza]

---

@JHE wrote:

When I have table A as PROC Transpose result.

Next step need to have table B .

How to have Table B from Table A

After Proc Transpose I have Table A, how many rows are unknown . ...'xi'. But customer need to concatenate xi rows to one recode--- one row.

---

You don't need to know how many. You can use a variable short cut with the PREFIX approach to concatenate all together.

catx(", ", of my_prefix: );

Using a naming convention and your dynamic approach will work. Or don't transpose and do it line by line and output at the last using LAST. Like in this question: https://communities.sas.com/t5/Base-SAS-Programming/vertical-concatenation-based-on-grouping-variabl...

[JHE]

oh, I see,      CATX(',', of my_prefix: ) , I have problem to get  'of my_prefix: ' ,

PROC TRANSPOSE DATA=FACETS_PROVIDERa PREFIX=TYPE OUT=FACETS_PROVIDERb (drop=_name_ _label_);

by lob service_provider_id;

var type_of_service;

RUN;

From this code, I could have Type1, type2......typen, 'n' would be my problem, do not know how to get it.

Affect my next step CATX(',',type1, type2...typen)

[Reeza]

Note the colon and try it and tell me if it doesn't work.
catx(', ', of TYPE:);

[JHE]

i

x1

x2

x3

x4

x5

xi

PROC Transpose result, since xi 'i' is unknown, when I need to use

CATX(',',x1,x2,x3....xi), but could not decide 'i'..

[Reeza]

6 easy ways to specify a list of variables in SAS

https://blogs.sas.com/content/iml/2018/05/29/6-easy-ways-to-specify-a-list-of-variables-in-sas.html

X_COMBO = catx(", ", of X:);

[JHE]

PROC TRANSPOSE DATA=a PREFIX=TYPE OUT=b (drop=_name_ _label_);
by lob;
var typ;
RUN;

Result of running above , have Table b:

LOB	TYpe1	Type2	Type3	..TYPE..i
100	MHSC	MHO1	MHSA	….?

Note: Type..i would be unknown, dynamic.

Want to have a new table C: I am a SQL person ...

PROC SQL;
 CREATE TABLE c as
  SELECT LOB,
             CATX(',',of TYPE:) AS Service_Codes,
  FROM B;
QUIT;

I want result :

LOB	TYPE
100	MHSC,MHO1,MHSA,…….TYPEi….

would not working ....???

[Reeza]

SQL doesn't support variable lists so you'll need to know the i value or use a data step instead.

[ballardw]

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@JHE wrote:

I have table A:

i	variable
1	x1
1	x2
1	x3
1	x4
1	x5
1	xi

How to have table B as :

i	variable
1	x1,x2,x3,x4,x5..xi

the problem is , 'xi' , 'i'  isdynamic value, from Proc Transpose Prefix option.

I need to know  HOW  from table A to B, and handle xi dynamically.

Thank you

---

If I understand what you want you will likely have an issue with assigning a length to the new variable that contains all of those values.

If the x1 , x2 etc are numeric you also need to tell us what precision you need for each value as the only way to accomplish anything close the that would require turning all of the values into character values so that you could combine them into a single string.

Perhaps you can share what you will actually do with that resulting data set as perhaps this step isn't needed at all.

[JHE]

using proc sql, because we need group by LOB,

result should be as this ...

LOB	TYPE
100	MHSC,MHO1,MHSA,…….TYPEi….
200	MHSC,MHO1,MHSA,…….TYPEi….
300	MNO1