Cov txheej txheem:

Pab pawg ua dab tsi hauv SAS?
Pab pawg ua dab tsi hauv SAS?

Video: Pab pawg ua dab tsi hauv SAS?

Video: Pab pawg ua dab tsi hauv SAS?
Video: ua zoo poob peev los lawm tub huas xyooj MV 2023 2024, Kaum ib hlis
Anonim

Cov PIB YOG clause pab pawg cov ntaub ntawv los ntawm ib kab lus lossis kab ke. Thaum koj siv a PIB Los ntawm kab lus, koj kuj siv ib qho kev sib sau ua ke hauv SELECT clause lossis hauv HAVING clause los qhia PROC SQL li cas los sau cov ntaub ntawv rau txhua tus. pab pawg.

Ntxiv mus, kuv yuav ua li cas suav ib pab pawg hauv SAS?

Tau txais Tag Nrho rau Txhua Pawg BY

  1. suav nrog PROC SORT kauj ruam los pab pawg cov kev soj ntsuam los ntawm tus neeg muag khoom sib txawv.
  2. siv BY nqe lus hauv DATA kauj ruam.
  3. siv daim ntawv Sum kom tag nrho cov bookings.
  4. rov pib qhov sib txawv ntawm qhov sib txawv rau 0 thaum pib ntawm txhua pab pawg ntawm kev soj ntsuam.

Qhov thib ob, Proc transpose ua dab tsi hauv SAS? PROC TRANSPOSE pab kom rov kho cov ntaub ntawv hauv SAS . Txhawm rau txuag lub sijhawm programming thiab tswj qhov tseeb ntawm cov lej, peb yuav tsum siv TRANSPOSE txheej txheem rau restructure cov ntaub ntawv. Hloov Cov ntaub ntawv nrog PROC TRANSPOSE . Piv txwv Cov Txheej Txheem. Cia peb tsim cov ntaub ntawv piv txwv uas yog siv los piav txog qhov TRANSPOSE txheej txheem.

Yuav ua li cas yog tias koj siv Pawg Los ntawm cov lus hauv PROC SQL kauj ruam yam tsis muaj cov ntsiab lus?

Thaum koj siv tus GROUP BY clause , koj siv ib aggreg muaj nuj nqi hauv SELECT lus los yog HAV clause rau qhia PROC SQL ua li cas rau pawg cov ntaub ntawv. Yog koj qhia a GROUP BY clause hauv cov lus nug uas tsis muaj a Cov ntsiab lus ua haujlwm ,koj lus hloov rau ib ORDER BY lus.

Koj siv thawj qhov sib txawv thiab qhov kawg hloov pauv li cas hauv ib pawg los ntawm kev txheeb xyuas hauv SAS?

Kev hloov pauv hauv SAS yog 1 lossis 0

  1. THAWJ. variable = 1, thaum kev soj ntsuam yog thawj qhov kev soj ntsuam hauv ib pawg BY.
  2. THAWJ. variable = 0, thaum kev soj ntsuam tsis yog thawj qhov kev soj ntsuam hauv ib pawg BY.
  3. TSHIAB. variable = 1, thaum kev soj ntsuam yog qhov kev soj ntsuam zaum kawg hauv pawg BY.
  4. TSHIAB.

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