我没有像我期望的那样得到结果。
这是我的数据集:
data have0;
infile cards truncover expandtabs;
input MC $ ET $ Date :date9. Time :time. PMC $ PXMC $ Site $ Dia MV SF;
format date date8. Time HHMM.;
cards;
US000409 Meas 12Oct2015 17:26 7101 Et1 1 . 2780462.00000 1
US000409 Meas 12Nov2016 17:33 7101 Et1 1 861.26 2780462.00000 1
US000409 Lath 12Oct2015 17:33 7102 Et1 1 861.6 2780462.00000 1
US01036 Meas 12Nov2016 17:26 7101 Et1 2 . 522860.00000 1
US01036 Lath 13Oct2016 17:33 7202 Et1 2 866.68 522860.00000 1
US01036 Meas 13Oct2015 17:33 7101 Et1 2 867.36 522860.00000 1
US02044 Meas 13Nov2016 17:26 7202 Et1 1 . 569298.00000 1
US02044 Lath 13Nov2015 17:33 7202 Et1 1 865.32 569298.00000 1
US02044 Meas 14Nov2016 17:33 7202 Et1 2 865.68 569298.00000 1
US318 Lath 14Nov2016 17:26 7101 Et2 2 . 2630856.00000 1
US318 Meas 14Nov2016 17:33 7202 Et2 3 863.26 2630856.00000 1
US318 Lath 14Nov2016 17:33 7202 Et2 3 863.94 2630856.00000 1
US000409 Meas 15Nov2016 21:56 7202 Et2 3 860.98 2780462.00000 1
US000409 Meas 15Nov2016 21:56 7203 Et2 4 861.5 2780462.00000 1
US01036 Lath 16Nov2016 21:56 7101 Et2 4 866.64 522860.00000 1
US01036 Meas 16Nov2016 21:56 7202 Et2 4 867.34 522860.00000 1
US02044 Lath 17Nov2016 21:56 7203 Et2 1 865.3 569298.00000 1
US02044 Meas 17Nov2016 21:56 7204 Et2 3 865.68 569298.00000 1
US318 Lath 17Nov2016 21:56 7204 Et2 2 863.24 2630856.00000 1
;
run;
我想做的是:
PROC SQL;
CREATE TABLE MC_ET AS
SELECT t1.MC,
case t1.ET
when "Lath" then (COUNT(t1.ET)) AS COUNT_of_ET_Lath
when "Meas" then (COUNT(t1.ET)) AS COUNT_of_ET_Meas
end,
(year(t1.Date)) AS Year
FROM have0 t1
GROUP BY t1.MC, (CALCULATED Year);
QUIT;
我期待得到像这样的结果:
MC Year Count_Lath Count_Meas
US000409 2015 1 1
US000409 2016 1 3
US01036 2015 0 1
US01036 2016 2 2
US02044 2015 1 0
US02044 2016 1 3
US318 2016 3 1
我不知道如何在上面的代码中使用case。我想我犯了一些错误。请帮忙纠正。
感谢。
答案 0 :(得分:1)
我在你的解释中有点迷失,但是,如果你想做两个这样的计数,你需要在不同的列中进行。在SQL案例中,它作为一个开关,它的输出总是只有一列。
但是我不使用SAS,我使用Oracle,所以请谨慎行事。在Oracle中,字符串是用撇号而不是引号来捕获的,也许你也是如此。
我建议尝试这个而不是你的情况:
sum(case when t1.ET='Lath' then 1 else 0 end) as count_lath,
sum(case when t1.ET='Meas' then 1 else 0 end) as count_meas
你的分组应该没问题。
试试这个,希望它有所帮助。
答案 1 :(得分:0)
是的,我明白了......谢谢@Emil ......
PROC SQL;
CREATE TABLE MC_ET AS
SELECT t1.MC, (year(t1.Date)) AS Year,
sum(case when t1.ET='Lath' then 1 else 0 end) as Count_of_Lath,
sum(case when t1.ET='Meas' then 1 else 0 end) as count_of_Meas
FROM have t1
GROUP BY t1.MC, (CALCULATED Year)
;
QUIT;