Cov txheej txheem:
Video: Kuv yuav tsim cov ntaub ntawv SQL lus nug li cas?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2024-01-18 08:24
Tsim thiab ua tiav SQL Query
- Xaiv Cov Ntaub Ntawv > nov > SQL File los ntawm lub ntsiab zaub mov bar.
- Nyob rau hauv lub Enter los yog Xaiv Parent Folder box, xaiv Java project koj nyuam qhuav tsim.
- Nkag mus rau Cov ntaub ntawv Lub npe.
- Koom nrog qhov no SQL file nrog Apache Derby kev sib txuas profile los ntawm kev qhia txog Database Server Hom, Kev Sib Txuas Profile Name, thiab Database Name.
Tsuas yog li ntawd, kuv yuav ua li cas thiaj tsim tau ib daim ntawv. SQL?
Tsim ib cov ntaub ntawv SQL
- Hauv Navigator, xaiv qhov project.
- Xaiv Cov Ntaub Ntawv | Tshiab los qhib New Gallery.
- Hauv pawg ntoo, nthuav cov Database Tier thiab xaiv cov ntaub ntawv Database.
- Hauv cov npe khoom, nyem ob npaug rau SQL File.
- Hauv New SQL File dialog, muab cov ntsiab lus los piav qhia cov ntaub ntawv tshiab. Nyem Pab rau cov lus qhia ntxiv.
- Nyem OK.
Tom qab ntawd, lo lus nug yog, Kuv yuav qhib SQL lus nug li cas? Txhawm rau thauj cov lus nug khaws tseg:
- Hauv Object Explorer, xaiv cov ntaub ntawv uas koj xav siv cov lus nug rau.
- Siv cov lus txib Qhib hauv daim ntawv thov toolbar.
- Nyob rau hauv lub qhov rais Qhib Cov Ntaub Ntawv, mus rau qhov chaw ntawm cov lus nug tau txais kev cawmdim, xaiv nws thiab nyem Qhib.
Yog li ntawd, ua li cas koj tsim cov ntawv nyeem hauv SQL lus nug?
Txhawm rau pib, Kuv mam li tshuaj xyuas ib qho piv txwv yooj yim los qhia seb yuav xa tawm li cas SQL lus nug ua rau a cov ntaub ntawv.
Cov kauj ruam los tsim cov ntaub ntawv Batch rau Export SQL Query Results rau cov ntawv nyeem
- Kauj ruam 1: Npaj cov lus txib kom xa cov lus nug tshwm sim.
- Kauj ruam 2: Tsim cov ntaub ntawv Batch.
- Kauj ruam 3: Khiav cov ntaub ntawv batch.
. SQL file format yog dab tsi?
Txuas ntxiv rau SQL ntawv lus nug SQL ntawv yog a cov ntaub ntawv extension rau Cov Lus Nug Cov Lus Nug hom ntaub ntawv sau rau hauv ASCII. SQL cov ntaub ntawv yog siv los ntawm cov khoom siv database. A SQL file feem ntau muaj cov lus nug los hloov cov qauv ntawm cov ntaub ntawv sib raug zoo - los ntxig, rho tawm, hloov kho lossis rho tawm cov ntaub ntawv.
Pom zoo:
Yuav ua li cas koj tuaj yeem txav qhov taw tes nrawm nrawm mus rau qhov pib ntawm cov lus nug cov lus nug?
T lossis F: Nias Ctrl + txoj cai xub yuam sij kom txav qhov taw tes rau qhov pib ntawm lo lus tom ntej
Kuv yuav ua li cas thiaj tsim tau ZIP cov ntaub ntawv nrog ntau cov ntaub ntawv?
Muab ob peb cov ntaub ntawv mus rau hauv ib qho zippedfolder kom yooj yim sib faib ib pawg ntawm cov ntaub ntawv. Nrhiav cov ntaub ntawv lossis nplaub tshev uas koj xav zip. Nias thiab tuav (lossis right-click) cov ntaub ntawv lossis ntawv tais ceev tseg, xaiv (lossis taw tes rau) Xa mus rau, thiab tom qab ntawd xaiv Compressed (zipped) folder
Kuv yuav tsim Oracle SQL lus nug los ntawm CSV cov ntaub ntawv li cas?
Cov kauj ruam los xa cov lus nug rau CSV hauv Oracle SQL Developer Kauj Ruam 1: Khiav koj cov lus nug. Ua ntej, koj yuav tsum tau khiav koj cov lus nug hauv SQL Developer. Kauj ruam 2: Qhib Export Wizard. Kauj ruam 3: Xaiv CSV hom thiab qhov chaw rau export koj cov ntaub ntawv. Kauj ruam 4: Export query results to CSV
Vim li cas kem taw qhia cov ntaub ntawv khaws cia ua cov ntaub ntawv nkag ntawm disks sai dua li kab qhia cov ntaub ntawv khaws cia?
Kem oriented databases (aka columnar databases) yog qhov tsim nyog rau kev ntsuas kev ua haujlwm ntau dua vim tias cov ntaub ntawv hom ntawv (kem hom) qiv nws tus kheej kom nrawm dua cov lus nug ua - scans, aggregation thiab lwm yam. Ntawm qhov tod tes, kab oriented databases khaws ib kab (thiab tag nrho nws. kab) contiguously
Yuav ua li cas koj sau cov lus nug hauv lub zog lus nug?
Thawj kauj ruam hauv kev tsim koj tus kheej Power Query tsab ntawv yog ntxiv cov lus nug dawb paug rau Power BI Desktop. Txhawm rau ntxiv cov lus nug, nyem Tau Cov Ntaub Ntawv ntawm Lub Tsev ribbon nyob rau hauv lub qhov rai tseem ceeb, mus rau Lwm ntu, thiab nyem ob npaug rau Blank Query. Qhov no tso tawm Query Editor nrog cov lus nug tshiab uas teev nyob rau hauv Queries pane