Cov txheej txheem:
- Kuv yuav ua li cas rov ua dua SQL Server saib?
- Peb puas tuaj yeem hloov kho saib hauv SQL?
- Peb puas tuaj yeem pom qhov ntsuas ntsuas hauv SQL Server?
- Yuav ua li cas koj rov ua kom pom qhov pom tseeb?
Video: Peb puas tuaj yeem pom hauv sql server?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
SQL Server automatically recompiles khaws cov txheej txheem, ua rau, thiab cov neeg siv txhais cov haujlwm thaum nws muaj txiaj ntsig los ua qhov no.
Kuv yuav ua li cas rov ua dua SQL Server saib?
Yuav kom rov tsim kho txhua qhov kev xav ntawm SQL Server database, koj tuaj yeem siv cov ntawv hauv qab no: DECLARE @view_name AS NVARCHAR(500); DECLARE views_cursor CURSOR RAU SELECT TABLE_SCHEMA + '. ' +TABLE_NAME NTAWM INFORMATION_SCHEMA.
Peb puas tuaj yeem hloov kho saib hauv SQL?
The ALTER VIEW command tso cai rau koj hloov kho qhov pom. Ib qho kev pom yog raws li qhov tshwm sim los ntawm cov lus nug uas muaj SELECT nqe lus lossis UNION ntawm ob lossis ntau dua SELECT nqe lus. … Txhawm rau txiav txim siab seb qhov kev pom muaj nyob hauv lub npe tam sim no, siv $SYSTEM. SQL.
Peb puas tuaj yeem pom qhov ntsuas ntsuas hauv SQL Server?
Ntawm SQL neeg rau zaub mov, ib qho inline rooj-tus nqi muaj nuj nqi yog ze li qhov koj tuaj yeem ua tau tau mus rau qhov pom tsis pomZoo li kev pom, qhov ua haujlwm hauv kab tsis muaj lub cev. … Qhov ntawd yog, tsis yog yuav tsum tau tsim ib qho WHERE clause txhua zaus koj xav lim qhov pom, nrog rau kev ua haujlwm inline, koj tsuas yog dhau ntawm qhov tsis muaj.
Yuav ua li cas koj rov ua kom pom qhov pom tseeb?
Txhawm rau hloov kho cov ntaub ntawv hauv qhov pom pom, koj tuaj yeem siv REFRESH MATERIALIZED VIEW nqe lus txhua lub sijhawm. Thaum koj siv cov lus no, Amazon Redshift txheeb xyuas cov kev hloov pauv uas tau tshwm sim hauv lub rooj hauv paus lossis cov rooj, thiab tom qab ntawd siv cov kev hloov pauv no rau qhov kev pom zoo.
Pom zoo:
Qhov twg tuaj yeem pom cov thermophiles nyob hauv peb lub ntiaj teb?
Thermophiles muaj nyob rau hauv ntau yam thaj chaw sov sov ntawmlub ntiaj teb, xws li cov qhov dej kub zoo li cov hauv Yellowstone National Park (saib duab) thiab cov qhov dej sib sib zog nqus dej hiav txwv, nrog rau Cov nroj tsuag lwj, xws li peat bogs thiab compost .
Peb puas tuaj yeem pom ntau xim?
Qhov no yog hu ua txoj kev xav ntawm tetrachromacy. Thaum trichromats tuaj yeem pom txog 1 lab xim, tetrachromats tuaj yeem pom qhov tsis txaus ntseeg 100 lab xim, raws li Jay Neitz, PhD, tus kws tshaj lij ophthalmology ntawm University of Washington, uas tau kawm xim pom kev dav .
Cytoplasm puas tuaj yeem pom hauv qab lub teeb pom kev zoo?
Ceeb toom: Lub nucleus, cytoplasm, cell membrane, chloroplasts thiab cell phab ntsa yog cov kab mob uas tuaj yeem pom hauv lub teeb pom kev zoo. Lub cell organelles pom nyob rau hauv lub teeb pom kev zoo? Cov kab mob uas tuaj yeem pom hauv lub teeb pom kev zoo yog cov nucleus, cytoplasm, cell membrane, chloroplasts, thiab cell wall .
Dab tsi yog qhov txawv ntawm kev pom tsis pom thiab pom tsis pom ntau dua?
Kev muaj peev xwm tawm tsam yam tsis muaj qhov kawg ntawm kev sau ntawv vs kev tuaj yeem cuam tshuam rau lwm tus neeg kuj yog qhov sib txawv. Qhov tseem ceeb Invisibility yog "qhov tseeb nrhiav / nkaum / mus ncig tsis pom" qhov twg Qhov Kev Pom Zoo Tshaj Plaws yog ntau ntawm kev sib ntaus sib tua Puas pom qhov tsis pom kev ua haujlwm ntawm kev pom tsis pom ntau dua?
Puas muaj cov kev xav pom hauv sql server?
Nyob hauv SQL Server, saib nrog cov cim tshwj xeeb ntawm nws (aka "materialized view") tsis thiab tsis tuaj yeem hloov kho los ntawm tus neeg siv, tsis yog nws khaws cia nyob rau hauv ib tug nyias muaj nyias lub rooj-tsim - nws yog ib txwm hloov kho los ntawm lub cav thaum lub sij hawm hloov tshiab, thiab yeej tsis tawm ntawm sync.
