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x04_SAS_Hash.sas
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x04_SAS_Hash.sas
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/* */
/* DETAIL */
DATA DETAIL;
INPUT
DATE DATE9.
AREACODE
PHONENUM $8.
TOACRONYM $
FROMACRONYM $
SECRETCODE
;
FORMAT
DATE YYMMDD10.
;
DATALINES;
21DEC2006 407 312-9088 AFAIK DQMOT 103
21DEC2006 407 324-6674 BEG TU 101
21DEC2006 407 312-9088 BFN SYS 101
21DEC2006 407 312-9088 BTDT IHU 102
22DEC2006 407 312-9088 C&G AFAIK 103
;
PROC PRINT DATA = DETAIL;
RUN;
/* */
/* LOOKUP_1 */
DATA LOOKUP_1;
INPUT
ACRONYM $
MEANING $30.
;
DATALINES;
AFAIK AS FAR AS I KNOW
AFK AWAY FROM KEYBOARD
ASAP AS SOON AS POSSIBLE
BEG BIG EVIL GRIN
BFN BYE FOR NOW
BTDT BEEN THERE, DONE THAT
DQMOT DON'T QUOTE ME ON THIS.
IHU I HATE YOU
SYS SEE YOU SOON
;
PROC PRINT DATA = LOOKUP_1;
RUN;
/* */
/*
--F1--
MERGE
*/
PROC SORT
DATA = DETAIL
OUT = _T1
NODUPKEY;
BY TOACRONYM;
RUN;
PROC SORT
DATA = LOOKUP_1
OUT = _T2(
RENAME = (
ACRONYM = TOACRONYM
MEANING = TOMEANING
)
)
NODUPKEY;
BY ACRONYM;
RUN;
DATA T;
MERGE _T1(IN=A) _T2(IN=B);
BY TOACRONYM;
IF A;
RUN;
PROC DELETE DATA = _T1 _T2;
RUN;
PROC PRINT DATA = T;
RUN;
/* */
/*
--F2--
SQL
*/
PROC SQL;
SELECT
A.*,
B.MEANING AS TOMEANING
FROM DETAIL AS A LEFT JOIN LOOKUP_1 AS B
ON A.TOACRONYM = B.ACRONYM
;
QUIT;
/* */
/*
--F3--
HASH (RIGHT)
*/
DATA RESULTS;
IF 0 THEN SET LOOKUP_1;
DROP ACRONYM MEANING RC;
IF _N_ = 1 THEN DO;
DECLARE HASH HASHLOOKUP(DATASET:'LOOKUP_1');
HASHLOOKUP.DEFINEKEY('ACRONYM');
HASHLOOKUP.DEFINEDATA('MEANING');
HASHLOOKUP.DEFINEDONE();
CALL MISSING(ACRONYM, MEANING);
END;
SET DETAIL;
RC = HASHLOOKUP.FIND(KEY:TOACRONYM);
IF RC = 0 THEN TOMEANING = MEANING;
RUN;
PROC PRINT DATA = RESULTS;
RUN;
/* */
DATA _R1;
/* IF 0 THEN SET LOOKUP_1; */
DROP ACRONYM MEANING RC;
IF _N_ = 1 THEN DO;
DECLARE HASH HASHLOOKUP(DATASET:'LOOKUP_1');
HASHLOOKUP.DEFINEKEY('ACRONYM');
HASHLOOKUP.DEFINEDATA('MEANING');
HASHLOOKUP.DEFINEDONE();
CALL MISSING(ACRONYM, MEANING);
END;
SET DETAIL;
RC = HASHLOOKUP.FIND(KEY:TOACRONYM);
IF RC = 0 THEN TOMEANING = MEANING;
RUN;
PROC PRINT DATA = _R1;
RUN;
/* */
/*
HASH ERROR2
*/
DATA _R2;
IF 0 THEN SET LOOKUP_1;
DROP ACRONYM MEANING RC;
IF _N_ = 1 THEN DO;
DECLARE HASH HASHLOOKUP(DATASET:'LOOKUP_1');
HASHLOOKUP.DEFINEKEY('ACRONYM');
HASHLOOKUP.DEFINEDATA('MEANING');
HASHLOOKUP.DEFINEDONE();
/* CALL MISSING(ACRONYM, MEANING); */
END;
SET DETAIL;
RC = HASHLOOKUP.FIND(KEY:TOACRONYM);
IF RC = 0 THEN TOMEANING = MEANING;
RUN;
PROC PRINT DATA = _R2;
RUN;
/* */
/*
HASH ERROR3
*/
DATA _R3;
IF 0 THEN SET LOOKUP_1;
DROP ACRONYM MEANING RC;
IF _N_ = 1 THEN DO;
DECLARE HASH HASHLOOKUP(DATASET:'LOOKUP_1');
HASHLOOKUP.DEFINEKEY('ACRONYM');
HASHLOOKUP.DEFINEDATA('MEANING');
HASHLOOKUP.DEFINEDONE();
CALL MISSING(ACRONYM, MEANING);
END;
SET DETAIL;
RC = HASHLOOKUP.FIND(KEY:TOACRONYM);
TOMEANING = MEANING;
RUN;
PROC PRINT DATA = _R3;
RUN;