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Oracle implements mysql update limit and oraclemysql

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Oracle clears the high waterline of the table, and oracle clears the waterline

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Synchronize tables with MERGE statements

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Oracle flexibly inserts data through query insert into... select..., oracle... select. Insert into reg_user (id, name, password, area_code, reg_time, first_pswd, record_type) select l. reg_user_id, l. entry_person, '4qrcoum6wau + VuBX8g + IPg =

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