Video: Puas yog Go tsim nyog hauv SQL?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
2 Teb. Lawv tsis nruj me ntsis xav tau - lawv tsuas yog cov lus qhia rau cov SQL ntawv Server Management Studio kom ua tiav cov nqe lus mus txog qhov tam sim no thiab tom qab ntawd txuas ntxiv mus. GO tsis yog T- SQL ntawv lo lus tseem ceeb lossis txhua yam - nws tsuas yog cov lus qhia uas ua haujlwm hauv SSMS.
Ib yam li ib tug yuav nug, dab tsi yog siv rau hauv SQL?
Cov GO command yog siv rau pawg SQL ntawv commands rau hauv batch uas xa mus rau lub server ua ke. Cov lus txib suav nrog hauv batch, uas yog, cov lus txib txij thaum kawg GO hais kom ua los yog pib ntawm qhov kev sib kho, yuav tsum muaj logic zoo ib yam.
Qhov thib ob, dab tsi yog mus lo lus tseem ceeb hauv SQL? Cov lo lus tseem ceeb GO yog siv los ntawm SQL ntawv Server Management Studio thiab SQLCMD txhawm rau kos npe rau ib yam thiab tsuas yog ib qho: Qhov kawg ntawm ib pawg ntawm nqe lus. Qhov tseeb, koj tuaj yeem hloov qhov koj siv los txiav cov khoom siv rau lwm yam uas tsis yog " GO ": Qhov saum toj no screenshot yog ib qho kev xaiv nyob rau hauv SSMS uas yog configurable.
yog semicolon tsim nyog hauv SQL?
Los ntawm lub neej ntawd, SQL ntawv cov lus raug txiav nrog semicolons . Koj siv a semicolon txhawm rau txiav cov nqe lus tshwj tsis yog tias koj tau (tsis tshua muaj) teeb tsa cov lus tshaj tawm tshiab. Kho kom raug: nyob rau hauv teb rau cov lus hais terminators tsis xav tau los ntawm [tshwj xeeb RDBMS], thaum uas tej zaum yuav muaj tseeb, lawv nyob nraum xav tau los ntawm ANSI SQL ntawv Txuj.
Thaum twg siv pib thiab xaus hauv SQL?
BEGIN thiab END keywords tsis tas yuav tsum tau hauv Transact- SQL ntawv . BEGIN thiab END yog siv nyob rau hauv Transact- SQL ntawv txhawm rau pab pawg cov lus qhia rau hauv ib nqe lus sib xyaw, kom tswj cov lus xws li IF… ELSE, uas cuam tshuam rau kev ua haujlwm ntawm ib leeg xwb SQL ntawv nqe lus, tuaj yeem cuam tshuam kev ua haujlwm ntawm tag nrho pawg.
Pom zoo:
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