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Video: Kuv yuav ntxiv qhov tseem ceeb hauv Oracle SQL Developer li cas?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2024-01-18 08:24
Tus yuam sij tseem ceeb tuaj yeem txhais tau hauv CREATE TABLE nqe lus lossis ALTER TABLE nqe lus
- Tsim tus yuam sij tseem ceeb - Siv Tsim TABLE nqe lus. Koj ua tau tsim ib qho tseem ceeb hauv Oracle nrog rau Tsim TABLE nqe lus.
- Tsim tus yuam sij tseem ceeb - Siv ALTER TABLE nqe lus.
- Tso Lub Ntsiab Tseem Ceeb .
- Disable Lub Ntsiab Tseem Ceeb .
- Pab Lub Ntsiab Tseem Ceeb .
Ib sab ntawm qhov no, koj yuav ua li cas ntxiv tus yuam sij tseem ceeb?
Txhawm rau tsim tus yuam sij tseem ceeb
- Hauv Object Explorer, right-click lub rooj uas koj xav ntxiv qhov tshwj xeeb txwv, thiab nyem Tsim.
- Hauv Table Designer, nyem qhov kab xaiv rau kab ntawv database koj xav kom txhais ua tus yuam sij tseem ceeb.
- Right-click tus kab xaiv rau kab thiab xaiv Teem Lub Ntsiab Tseem Ceeb.
Puas yog tus yuam sij tseem ceeb tsim qhov ntsuas hauv Oracle? Taw qhia rau Oracle CREATE INDEX nqe lus thaum koj tsim ib lub rooj tshiab nrog a thawj tus yuam sij , Oracle txiav txim tsim ib new qhov ntsuas rau cov thawj tus yuam sij kab. Tsis zoo li lwm cov database systems, Oracle ua tsis tau tsim ib qho index rau txawv teb chaws tus yuam sij kab.
Hauv qhov no, ua li cas koj thiaj li tau txais tus yuam sij tseem ceeb ntawm lub rooj hauv Oracle?
Teb: Koj tuaj yeem rov qab tau thawj tus yuam sij cov ntaub ntawv nrog SQL nqe lus hauv qab no: SELECT cols. table_name, cols. column_name, cols.
Kuv yuav ua li cas thiaj tsim tau tus yuam sij txawv teb chaws hauv Oracle SQL Developer?
- Qhib Oracle SQL Developer thiab txuas mus rau lub database.
- Hauv kev sib txuas navigator, nyem rau ntawm Schema (neeg siv) node kom nthuav dav.
- Tom qab ntawd nyem rau ntawm Table node kom nthuav dav.
- Nrhiav koj lub rooj nyob rau hauv uas koj xav tsim ib tug txawv teb chaws Key thiab ua txoj cai nyem rau ntawm nws.
- Los ntawm cov ntawv qhia zaub mov shortcut xaiv Constraint> Add Foreign Key.
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