Cov txheej txheem:
Video: Koj ua li cas tawm hauv SQL?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Cov lus tsis pub dhau SQL nqe lus
- Pib lub tawm tswv yim nrog tus lej thiab lub hnub qub (/*). Txuas ntxiv nrog cov ntawv nyeem ntawm lub tawm tswv yim . Cov ntawv no tuaj yeem hla ntau kab. Xaus lub tawm tswv yim nrog lub hnub qub thiab tus lej (*/).
- Pib lub tawm tswv yim nrog -- (ob hyphens). Txuas ntxiv nrog cov ntawv nyeem ntawm lub tawm tswv yim . Cov ntawv no tsis tuaj yeem txuas mus rau kab tshiab.
Ib sab ntawm qhov no, qhov shortcut los tawm tswv yim hauv SQL yog dab tsi?
Rau tawm tswv yim tawm kab code hauv SQL ntawv Server Management Studio (SSMS) Query Window, xaiv kab ntawm cov lej koj xav tau tawm tswv yim tawm thiab ntaus cov keyboard luv 'CTRL + K' ua raws li 'CTRL + C'.
Ib tug kuj yuav nug, dab tsi yog cov lus txib SQL? SQL lus txib tau muab faib ua plaub pawg loj nyob ntawm lawv txoj haujlwm: Cov Lus Txhais Lus (DDL) - Cov no SQL lus txib yog siv los tsim, hloov kho, thiab xa cov qauv ntawm cov khoom siv database. Cov lus txib yog CREATE, ALTER, DROP, RENAME, thiab TRUNCATE.
Ntxiv mus, /* txhais li cas hauv SQL?
/* txhais tau tias pib ntawm ntau kab lus. Piv txwv li: /* CREATE PROC A_SAMPLE_PROC BEGIN AS xaiv * Los ntawm A_SAMPLE_TABLE END */ thaum -- txhais tau tias ib kab lus. Keyboard shortcut rau kev tawm tswv yim hauv MS SQL ntawv Server Studio yog Ctrl + K, Ctrl + C.
Peb sawv cev cov lus hauv Oracle li cas?
Hauv Oracle , a tawm tswv yim pib nrog -- cim yuav tsum nyob rau hauv kawg ntawm ib kab hauv koj SQL nqe lus nrog ib kab so tom qab nws. Txoj kev no ntawm tawm tswv yim tuaj yeem hla ib kab hauv koj SQL nkaus xwb thiab yuav tsum yog qhov kawg ntawm kab.
Pom zoo:
Yuav ua li cas koj khaws qhov chaw koj tawm hauv Word?
Txoj kev yooj yim tshaj plaws yog siv tus yuam sij shortcut: Ua haujlwm + F5, sai li sai tau thaum koj qhib koj cov ntaub ntawv lo lus, nias ob lub ntsiab lus tib lub sijhawm, Lo Lus Go Back feature yuav coj koj rov qab mus rau koj qhov kev hloov kho kawg. (Qhov tseeb, yog tias koj nias Shift + F5 ntau zaus, nws yuav coj koj mus txog plaub qhov kev hloov kho kawg.)
Ua li cas koj thiaj paub tias koj muaj iav hauv koj txhais tes?
Cov tsos mob thiab cov tsos mob me me me me los yog kab hauv qab ntawm daim tawv nqaij, feem ntau ntawm ob txhais tes lossis ko taw. kev xav tias ib yam dab tsi daig hauv qab ntawm daim tawv nqaij. mob ntawm qhov chaw ntawm lub splinter. Qee zaum liab, o, sov, los yog kua paug (cov tsos mob ntawm tus kab mob)
Yuav ua li cas koj tag koj tus kheej hauv kev tshaj tawm hauv Facebook?
Ntaus '@' ntawm qhov taw tes hauv cov xwm txheej hloov tshiab lossis cov lus pom uas koj xav sau koj tus kheej thiab tom qab ntawd ntaus koj lub npe raws li nws tshwm hauv Facebook. Ib daim ntawv teev cov neeg tshwm hauv qab qhov koj ntaus ntawv raws li koj ntaus
Koj zoom hauv thiab tawm hauv Final Cut Pro li cas?
Zoom thiab scroll nyob rau hauv qhov kawg Hlais Pro ncua sij hawm Zoom rau hauv ncua sij hawm: Xaiv Saib > Zoom Hauv, lossis nias Command-Plus Kos Npe (+). Zoom tawm ntawm lub sijhawm: Xaiv Saib> Zoom Tawm, lossis nias Command-Minus Sign (–)
Koj yuav tshem tawm OU li cas nrog kev tshem tawm tsis raug?
Coj mus rau OU uas koj xav rho tawm, txoj nyem rau ntawm nws thiab nyem rau ntawm Properties. Hauv Kev Tso Cai Nkag Nkag, yog tias qhov kev xaiv tsis lees txais nkag tau raug xaiv rau txhua tus, tshem nws. Nyem OK kom kaw qhov Advanced Security Settings. Nkag mus rau Cov Khoom tab thiab uncheck lub 'Protect from accidental deletion' checkbox