Dab tsi yog kev siv Commit kev lag luam hauv SQL Server?
Dab tsi yog kev siv Commit kev lag luam hauv SQL Server?

Video: Dab tsi yog kev siv Commit kev lag luam hauv SQL Server?

Video: Dab tsi yog kev siv Commit kev lag luam hauv SQL Server?
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Cov COMMIT command yog kev lag luam lus txib siv txuag cov kev hloov pauv uas tau thov los ntawm a kev pauv nyiaj mus rau database. Cov COMMIT command yog kev lag luam lus txib siv txuag cov kev hloov pauv uas tau thov los ntawm a kev pauv nyiaj mus rau database.

Tsuas yog li ntawd, dab tsi yog kev ua lag luam hauv SQL Server?

COMMIT ( SQL ntawv ) Los ntawm Wikipedia, phau ntawv dawb ceev encyclopedia. A COMMIT nqe lus hauv SQL ntawv xaus a kev pauv nyiaj nyob rau hauv kev sib raug zoo database tswj system (RDBMS) thiab ua rau txhua qhov kev hloov pauv pom rau lwm tus neeg siv. Cov hom ntawv dav dav yog los tshaj tawm BEGIN WORK nqe lus, ib lossis ntau dua SQL ntawv cov lus, thiab tom qab ntawd COMMIT nqe lus.

Dab tsi yog qhov kev siv ntawm kev cog lus thiab rollback hauv SQL? Lub ntsiab sib txawv ntawm cov COMMIT thiab ROLLBACK nqe lus ntawm SQL ntawv yog hais tias kev tua ntawm COMMIT nqe lus ua rau txhua qhov kev hloov kho los ntawm qhov tam sim no kev pauv nyiaj ua tas mus li. Ntawm qhov tod tes, kev tua ntawm ROLLBACK erases tag nrho cov kev hloov kho los ntawm tam sim no kev pauv nyiaj.

Tib neeg kuj nug, dab tsi yog kev siv kev lag luam hauv SQL Server?

Hauv paus, a kev pauv nyiaj yog ib chav tsev ntawm kev ua haujlwm uas tau ua tawm tsam cov ntaub ntawv. Cov haujlwm no tuaj yeem ua tau manually, xws li UPDATE nqe lus uas koj tau muab tso rau hauv SQL Server Management Studio los yog daim ntawv thov uas INSETS cov ntaub ntawv rau hauv lub database. Cov no yog tag nrho kev lag luam.

Kev siv Commit yog dab tsi?

Cov COMMIT hais kom ua yog cov lus txib siv los khaws cov kev hloov pauv uas tau hais los ntawm kev hloov pauv mus rau cov ntaub ntawv. Cov COMMIT hais kom txuag tag nrho cov kev pauv mus rau lub database txij li thaum kawg COMMIT los yog ROLLBACK hais kom ua.

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