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How do you debug and test your SAS programs?
What can you learn from the SAS log when debugging?
How do you test for missing values?
How would you create multiple observations from a single
observation?
What are some good SAS programming practices for processing
very large data sets?
Briefly describe 5 ways to do a "table lookup" in SAS.
Why is SAS considered self-documenting?
Are you sensitive to code walk-throughs, peer review, or QC
review?
What other SAS features do you use for error trapping and
data validation?
How does SAS handle missing values in: assignment
statements, functions, a merge, an update, sort order,
formats, PROCs?
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Answer Posted / vijaibhaskar
1. put statement and debug option is used for debug and
test the programs.
2.NMISS OPTION is used for missing values
3.line pointer is used for multiple lines per observation
@@ is used for multiple observations per line
4. ARRAYS IS USED FOR PROCESSING FOR LARGE DATA SET
5. WHEN DATA SET IS CREATED SAS CREATE DISCRIPTOR PORTION
AND DATA PORTION .THAT MEANS SAS STORES THE INFOMATION LIKE
VARIABLE NAME ,LENGTH,TYPE etc.
6.variable+expression.
sum function
u write renames of the variables in first data set if
same variable names are exit in second data set
missing values in transction data set does nt over write
the master data set in update statement.
NMISS OPTION
| Is This Answer Correct ? | 3 Yes | 2 No |
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Hello, I have PROC SQLs results group by 3 fields and I use SUM and COUNT functions in SQL. The problem is when I try to display my result with PROC TABULATE. I am getting very big numbers. I believe I make a mistake some where in Tabulate. Here is my Proc Tabulate. PROC TABULATE DATA=OUT04_05 FORMAT=12.; CLASS YR CENTRE VISA / PRELOADFMT EXCLUSIVE; VAR NEWUSER FRAUD TRANSFER AUTUSER REISSUE; TABLE CENTRE ALL, (YR ALL)*VISA, (NEWUSER*F=COMMA12. AUTUSER*F=COMMA12. FRAUD*F=COMMA12. TRANSFER*F=COMMA12. REISSUE*F=COMMA12.) / MISSTEXT={LABEL='0'} PRINTMISS RTS=20; FORMAT VISA VISAFMT.; KEYLABEL SUM = ' ' ALL = 'TOTAL'; LABEL YR = 'DATE YEAR' NEWUSER = 'TOTAL NEW ACCT' TRANSFER = 'TOTAL TRANSFER' FRAUD = 'TOTAL FRAUD TRANSFER' AUTUSER = 'TOTAL AUTH USERS' REISSUE = 'TOTAL REISSUE'; When I code it like : NEWUSER*N*F=COMMA12. AUTUSER*N*F=COMMA12. I get same amount numbers but to find a NEWUSER I use COUNT(*) and to find AUTUSER I use SUM(xxxx) function so both result shouldn’t be the same my problem is in this point. Could you tell me where the problem in code is. How can I display my result? TX.
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