Video: Koj txheeb cov kev hloov pauv hauv SAS li cas?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
- Yog koj sau ib qho xwb sib txawv , ces SAS yuav xaiv cov kev soj ntsuam hauv dataset raws li ascending qhov tseem ceeb ntawm qhov ntawd sib txawv .
- Koj ua tau xaiv hauv nqis xaj los ntawm qhov muab lo lus tseem ceeb DESCENDING ua ntej lub sib txawv npe uas koj xav kom cov ntaub ntawv ua txheeb ntawm.
- Koj ua tau xaiv los ntawm ntau sib txawv raws li nyob rau hauv cov ntaub ntawv.
Ntawm no, Proc yog dab tsi?
Cov SORT kev txiav txim SAS cov ntaub ntawv teev cov kev soj ntsuam los ntawm qhov tseem ceeb ntawm ib lossis ntau tus cwj pwm los yog cov lej sib txawv. Cov SORT txheej txheem yog hloov cov ntaub ntawv qub los yog tsim cov ntaub ntawv tshiab. PROC SORT tsim cov ntaub ntawv tso zis nkaus xwb. Yog xav paub ntxiv, saib cov txheej txheem tso zis.
Qhov thib ob, noobs txhais li cas hauv SAS? " NOOB - Tshem tawm cov kab hauv cov zis uas txheeb xyuas txhua qhov kev soj ntsuam los ntawm tus lej" "LABEL - Siv cov ntawv sib txawv ntawm cov ntawv sau ua kab lus"
Kuv yuav hloov npe hloov pauv li cas hauv SAS?
Cov RENAME = cov ntaub ntawv teev kev xaiv hauv SET nqe lus renames sib txawv nyob rau hauv cov ntaub ntawv input. Koj tuaj yeem siv cov npe tshiab hauv cov lus piav qhia rau cov kauj ruam DATA tam sim no. Rau hloov npe hloov pauv ua haujlwm tswj cov ntaub ntawv, siv cov txheej txheem DATASETS lossis nkag mus rau sib txawv dhau ntawm SAS windowing interface.
Kuv yuav muab cov ntaub ntawv sib koom ua ke hauv SAS li cas?
Rau ua ke ob lossis ntau dua cov ntaub ntawv teeb hauv SAS , koj yuav tsum xub xaiv ob qho tib si cov ntaub ntawv teem los ntawm ib tug sib txawv variable raws li qhov kev sib koom ua ke yuav raws li, thiab ces siv cov MERGE nqe lus hauv koj DATA nqe lus.
Pom zoo:
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