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Open SQL thiab Native SQL hauv ABAP yog dab tsi?
Open SQL thiab Native SQL hauv ABAP yog dab tsi?

Video: Open SQL thiab Native SQL hauv ABAP yog dab tsi?

Video: Open SQL thiab Native SQL hauv ABAP yog dab tsi?
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Qhib SQL tso cai rau koj nkag mus rau cov ntaub ntawv database tau tshaj tawm hauv ABAP phau ntawv txhais lus tsis hais txog ntawm lub platform database uas R/3 system siv. Native SQL tso cai rau koj siv cov ntaub ntawv tshwj xeeb SQL ntawv cov lus hauv ib ABAP /4 program.

Ib yam li ntawd, koj tuaj yeem nug, qhov txawv ntawm Qhib SQL thiab Native SQL hauv SAP ABAP yog dab tsi?

Qhib SQL tso cai rau koj nkag mus rau cov ntaub ntawv database tau tshaj tawm hauv ABAP Phau ntawv txhais lus tsis hais txog ntawm lub platform database uas koj R/3 System siv. Native SQL tso cai rau koj siv cov ntaub ntawv tshwj xeeb SQL ntawv nqe lus hauv ABAP qhov kev pab cuam. Yog tias koj qhov kev zov me nyuam yuav siv ntau dua ib lub platform database, tsuas yog siv Qhib SQL nqe lus.

Ib sab saum toj no, SQL hauv SAP yog dab tsi? SQL ntawv Stands rau Structured Query Language. Nws yog ib hom lus rau kev sib txuas lus nrog Relational database zoo li Oracle, MySQL thiab lwm yam. SQL ntawv yog siv los khaws, khaws thiab hloov kho cov ntaub ntawv hauv database. Los ntawm kev siv SQL hauv SAP HANA, peb tuaj yeem ua raws li txoj haujlwm- Schema txhais thiab siv (CREATE SCHEMA).

Tsis tas li, Open SQL hauv SAP ABAP yog dab tsi?

Qhib SQL yog lub kaus lub sij hawm rau ib tug subset ntawm SQL ntawv paub siv ABAP cov nqe lus, suav nrog DML ib feem. Qhib SQL tuaj yeem siv los nyeem (SELECT) thiab hloov kho (INSERT, Hloov Kho, MODIFY, lossis DELETE) cov ntaub ntawv hauv cov ntaub ntawv database tau teev tseg hauv ABAP Phau ntawv txhais lus.

Dab tsi yog qee qhov zoo ntawm kev siv qhib SQL?

SAP Qhib SQL qhov zoo

  • Portability: yog tias cov tuam txhab txiav txim siab hloov cov ntaub ntawv, peb tsis tas yuav hloov peb cov kev pabcuam ABAP.
  • Buffering cov ntaub ntawv: Thaum khiav Qhib SQL code tag nrho cov ntaub ntawv database yuav raug buffered hauv Application Server.
  • Automatic Client tuav: Cov neeg thov kev thov yuav raug tso tawm los ntawm cov ntaub ntawv sib tham.

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