topic Re: Find last term record in SAS Programming

Find last term record

AshleshaP — Tue, 11 Jun 2019 17:10:49 GMT

I have a data set with multiple records for each student.

I need to find last enrolled semester if they are not graduated.

id	term	term_code	matriculant	matric_label	Cum_passed
1	FS	6	1	Enrolled	64
1	SS	7	1	Enrolled	80
1	FS	7	1	Enrolled	102
1	SS	8	2	Graduated
2	FS	12	1	Enrolled	82
2	SS	13	1	Enrolled	94
2	FS	13	1	Enrolled	114
2	SS	14	3	Grad. and still enrolled	120
2	FS	14	2	Graduated
3	FS	13	1	Enrolled	6
3	SS	14	0	Not enrolled/graduated
3	FS	14	0	Not enrolled/graduated
3	SS	15	0	Not enrolled/graduated
3	FS	15	0	Not enrolled/graduated
4	FS	13	1	Enrolled	12
4	SS	14	0	Not enrolled/graduated
4	FS	14	1	Enrolled	17
4	SS	15	0	Not enrolled/graduated
4	FS	15	0	Not enrolled/graduated
5	FS	15	1	Enrolled	26
5	SS	16	1	Enrolled	39
5	FS	16	1	Enrolled	55
5	SS	17	1	Enrolled	68
5	FS	17	1	Enrolled	82

I need output to be or some identifier in new column as these students did not graduate/return.

3	FS	13	1	Enrolled	6
4	FS	14	1	Enrolled	17

Re: Find last term record

tsap — Tue, 11 Jun 2019 17:38:02 GMT

Some of the selection criteria depends on how your fields are set (numeric vs. character) but the overall logic will get what you are looking to accomplish.

DATA have;
FORMAT 		id 8. term $2. term_code $2. matriculant $2. matric_label $25. Cum_passed  8.;
INFORMAT	id 8. term $2. term_code $2. matriculant $2. matric_label $25. Cum_passed  8.;
INPUT  		id    term     term_code     matriculant     matric_label      Cum_passed;
CARDS;      
1 FS 6 1 Enrolled 64
1 SS 7 1 Enrolled 80
1 FS 7 1 Enrolled 102
1 SS 8 2 Graduated .
2 FS 12 1 Enrolled 82
2 SS 13 1 Enrolled 94
2 FS 13 1 Enrolled 114
2 SS 14 3 Grad.andStillenrolled 120
2 FS 14 2 Graduated .
3 FS 13 1 Enrolled 6
3 SS 14 0 NotEnrolled/graduated .
3 FS 14 0 NotEnrolled/graduated .
3 SS 15 0 NotEnrolled/graduated .
3 FS 15 0 NotEnrolled/graduated .
4 FS 13 1 Enrolled 12
4 SS 14 0 NotEnrolled/graduated .
4 FS 14 1 Enrolled 17
4 SS 15 0 NotEnrolled/graduated .
4 FS 15 0 NotEnrolled/graduated .
5 FS 15 1 Enrolled 26
5 SS 16 1 Enrolled 39
5 FS 16 1 Enrolled 55
5 SS 17 1 Enrolled 68
5 FS 17 1 Enrolled 82
;


PROC SQL;
CREATE TABLE WORK.RemoveGraduates	AS
	SELECT a.* 
	FROM WORK.Have	AS a
	LEFT JOIN (SELECT ID	
			   FROM WORK.HAVE
			   WHERE matric_label="Graduated")	AS b		ON a.ID=b.ID
	WHERE b.ID=.
	AND a.matric_label="Enrolled"
	ORDER BY a.ID, a.Term DESC;
QUIT;


DATA WORK.Want;
	SET WORK.RemoveGraduates;
	BY ID DESCENDING TERM;
	IF FIRST.ID AND FIRST.Term THEN OUTPUT;
RUN;

Re: Find last term record

AshleshaP — Tue, 11 Jun 2019 18:48:49 GMT

Thanks for your reply, it is giving me second last term for some ids.

I have attached file and highlighted some of the rows which i desire as output.

If student is enrolled throughout or graduated or graduated and enrolled these can be deleted.

I am looking for student who did not return with their last term's cumulative gpa.

I have attached my worksheet.

Re: Find last term record

tsap — Tue, 11 Jun 2019 20:19:54 GMT

Made some updates overall. Give this a try:

DATA have;
FORMAT 		id 8. term $2. term_code 2. matriculant $2. matric_label $25. Cum_passed  8.;
INFORMAT	id 8. term $2. term_code 2. matriculant $2. matric_label $25. Cum_passed  8.;
INPUT  		id    term     term_code     matriculant     matric_label      Cum_passed;
CARDS;      
1 FS 6 1 Enrolled 64
1 SS 7 1 Enrolled 80
1 FS 7 1 Enrolled 102
1 SS 8 2 Graduated .
2 FS 12 1 Enrolled 82
2 SS 13 1 Enrolled 94
2 FS 13 1 Enrolled 114
2 SS 14 3 Grad.andStillenrolled 120
2 FS 14 2 Graduated .
3 FS 13 1 Enrolled 6
3 SS 14 0 NotEnrolled/graduated .
3 FS 14 0 NotEnrolled/graduated .
3 SS 15 0 NotEnrolled/graduated .
3 FS 15 0 NotEnrolled/graduated .
4 FS 13 1 Enrolled 12
4 SS 14 0 NotEnrolled/graduated .
4 FS 14 1 Enrolled 17
4 SS 15 0 NotEnrolled/graduated .
4 FS 15 0 NotEnrolled/graduated .
5 FS 15 1 Enrolled 26
5 SS 16 1 Enrolled 39
5 FS 16 1 Enrolled 55
5 SS 17 1 Enrolled 68
5 FS 17 1 Enrolled 82
16020	FS	7	1	Enrolled	28
16020	SS	8	1	Enrolled	44
16020	FS	8	1	Enrolled	58
16020	SS	9	1	Enrolled	74
16020	FS	9	1	Enrolled	92
16020	SS	10	1	Enrolled	103
16020	FS	10	1	Enrolled	126
16020	SS	11	1	Enrolled	133
16020	FS	11	1	Enrolled	141
16020	SS	12	0	NotEnrolled/graduated .
16020	FS	12	0	NotEnrolled/graduated .
16020	SS	13	0	NotEnrolled/graduated .
17387	FS	6	1	Enrolled	1
17387	SS	7	0	NotEnrolled/graduated .
17387	FS	7	0	NotEnrolled/graduated .
17387	SS	8	0	NotEnrolled/graduated .
17387	FS	8	0	NotEnrolled/graduated .
17387	SS	9	0	NotEnrolled/graduated .
17387	FS	9	0	NotEnrolled/graduated .
17387	SS	10	0	NotEnrolled/graduated .
17387	FS	10	0	NotEnrolled/graduated .
17387	SS	11	0	NotEnrolled/graduated .
17387	FS	11	0	NotEnrolled/graduated .
17387	SS	12	0	NotEnrolled/graduated .
18088	FS	6	1	Enrolled	14
18088	SS	7	1	Enrolled	28
18088	FS	7	1	Enrolled	37
18088	SS	8	1	Enrolled	46
18088	FS	8	1	Enrolled	67
18088	SS	9	1	Enrolled	83
18088	FS	9	1	Enrolled	102
18088	SS	10	1	Enrolled	114
18088	FS	10	1	Enrolled	132
18088	SS	11	1	Enrolled	141
18088	FS	11	0	NotEnrolled/graduated .
18088	SS	12	3	Grad.andStillEnrolled	158
;


PROC SQL;
CREATE TABLE WORK.RemoveGraduates	AS
	SELECT a.* 
	FROM WORK.Have	AS a
	LEFT JOIN (SELECT ID	
			   FROM WORK.HAVE
			   WHERE matric_label="Graduated")	AS b		ON a.ID=b.ID
	WHERE b.ID=.
	AND a.matric_label="Enrolled"
	ORDER BY a.ID, a.Term_Code DESC, a.Term;
QUIT;


DATA WORK.Want;
	SET WORK.RemoveGraduates;
	BY ID DESCENDING Term_Code TERM;
	IF FIRST.ID AND FIRST.Term_Code AND FIRST.Term THEN OUTPUT;
RUN;

Re: Find last term record

AshleshaP — Tue, 11 Jun 2019 20:41:54 GMT

This worked too, but can you help me remove who is "enrolled" for all terms.

For example PID=45.

Re: Find last term record

tsap — Wed, 12 Jun 2019 12:33:37 GMT

PROC SQL;
CREATE TABLE WORK.RemoveGraduates	AS
	SELECT a.*, c.IDct, c.MLSum
	FROM WORK.Have	AS a
	LEFT JOIN (SELECT ID FROM WORK.HAVE WHERE matric_label="Graduated")	AS b		ON a.ID=b.ID
	LEFT JOIN (SELECT ID, COUNT(ID)	AS IDCt, SUM(CASE WHEN matric_label="Enrolled" THEN 1 ELSE 0 END)	AS MLSum		FROM WORK.Have GROUP BY ID HAVING Calculated IDCt=Calculated MLSum)	AS c	ON a.ID=c.ID
	WHERE b.ID=.
	AND c.ID=.
	AND a.matric_label="Enrolled"
	ORDER BY a.ID, a.Term_Code DESC, a.Term;
QUIT;


DATA WORK.Want;
	SET WORK.RemoveGraduates;
	BY ID DESCENDING Term_Code TERM;
	IF FIRST.ID AND FIRST.Term_Code AND FIRST.Term THEN OUTPUT;
RUN;

Re: Find last term record

AshleshaP — Wed, 12 Jun 2019 12:54:07 GMT

Thanks a lot. This is what I was looking for.

Much appreciate your help.

Re: Find last term record

tsap — Wed, 12 Jun 2019 13:40:35 GMT

Glad I could help.