[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["很难理解","hardToUnderstand","thumb-down"],["信息或示例代码不正确","incorrectInformationOrSampleCode","thumb-down"],["没有我需要的信息/示例","missingTheInformationSamplesINeed","thumb-down"],["翻译问题","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["最后更新时间 (UTC):2025-07-02。"],[[["This guide details the process of migrating Oracle tables without primary keys to PostgreSQL, a requirement for Database Migration Service."],["The default conversion workspace automatically creates `rowid` columns to serve as primary keys for tables that lack them."],["For legacy conversion workspaces, users must manually create primary keys, either by using existing columns, creating a `rowid` column, or, if applicable, utilizing all columns if there are no duplicate rows."],["The provided code snippet demonstrates how to add a `rowid` column and designate it as the primary key within the destination PostgreSQL database."]]],[]]