How to exclude certain combination pattern in data set in Webfocus? - webfocus

Question

enter code hereI have a data set where I have to get rid off the student if he/she has the grade other than "F". here in an example, Brian has grades other than "F", so, Brian should not appear in my result. Only Jack should appear, as, I want EXCLUSIVELY "F" grade students.
Webfocus data
I tried it in Webfocus using OMITS, NE functions, but I am not able to resolve the issue (Please click to see the screen shot).
As mentioned above, I am only expecting jack's record, as Brian has grades other than "F". I would really appreciate your help. Thanks.
I am stuck at the last line in a code:
TABLE FILE TABLE1
PRINT
ID
NAME
Grade
WHERE (ID OMITS (PRINT * from TABLE1 WHERE (Grade NE 'F')));

Answer 1

That's a very complex way of querying to WF!
This piece of code, its for loading the data you showed in the image:
-*
-* FILE ALLOCATION
-*
FILEDEF AMDEXAM DISK amdexam.ftm (APPEND
-RUN
-*
-* MASTER TO READ AMDS EXAMPLE
-*
EX -LINES 5 EDAPUT MASTER,AMDEXAM,CV,FILE
FILENAME=AMDEXAM, SUFFIX=FIX, SEGNAME=AMDEXAM, SEGTYPE=S0, $
FIELD=ID ,ALIAS=ID ,USAGE=A5 ,ACTUAL=A5 ,$
FIELD=NAME ,ALIAS=NAME ,USAGE=A10 ,ACTUAL=A10 ,$
FIELD=GRADE ,ALIAS=GRADE ,USAGE=A1 ,ACTUAL=A1 ,$
-*
-* LOAD FILE WITH SOME RECORDS
-*
-WRITE AMDEXAM A1 Brian A
-WRITE AMDEXAM A1 Brian B
-WRITE AMDEXAM A1 Brian B
-WRITE AMDEXAM A1 Brian A
-WRITE AMDEXAM A1 Brian C
-WRITE AMDEXAM A1 Brian F
-WRITE AMDEXAM A1 Brian F
-WRITE AMDEXAM A2 Jack F
-WRITE AMDEXAM A2 Jack F
-WRITE AMDEXAM A2 Mystic B
-WRITE AMDEXAM A3 Mystic A
-WRITE AMDEXAM A3 Mystic C
-WRITE AMDEXAM A3 Mystic C
-WRITE AMDEXAM A4 Joe F
-WRITE AMDEXAM A4 Joe F
-WRITE AMDEXAM A4 Ruben B
-WRITE AMDEXAM A4 Ruben A
-*
You could try something like this to achieve what you've asked:
TABLE FILE AMDEXAM
SUM
COMPUTE AA/I1 = IF ((LAST NAME NE NAME AND GRADE NE 'F') OR (LAST NAME EQ NAME AND LAST AA EQ 1)) THEN 1 ELSE 0; NOPRINT
BY ID
BY NAME
BY GRADE
WHERE TOTAL AA EQ 0
ON TABLE SET BYDISPLAY ON
END
-RUN
-EXIT
That should give you the grades of Bryan.
EDIT: Changed verb from PRINT to SUM to get only one record and NOPRINT to field AA.