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  • All (2385) +223
    • AI (549) +19
    • DevOps (142) +2
    • Software (1001) +131
    • IT (688) +70
    • Education (5) +1
  • Notice
  • All (2385) +223
  • AI (549) +19
  • DevOps (142) +2
  • Software (1001) +131
  • IT (688) +70
  • Education (5) +1
  • Notice
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  • 8小时前 · software

    Bf-Trees:突破页面壁垒

    你好,我是Maneshwar。我正在开发FreeDevTools——一个在线的开源中心,将 dev tools、cheat codes 和 TLDR 汇集在一个地方,方便……

    #B-Trees #database #storage #page size #write amplification #caching #data structures #performance
  • 1天前 · software

    步骤2

    查询过滤器https://media2.dev.to/dynamic/image/width=50,height=50,fit=cover,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2...

    #SQL #Oracle #database #query #testing #Dev.to
  • 2天前 · software

    你为什么会使用 ORM?

    《Why would you ever use an ORM?》的封面图片

    #ORM #object-relational mapping #database #performance #development speed #software architecture #best practices
  • 2天前 · software

    比较5

    SQL Script sql -- 声明用于模式 UID 的变量,仅运行一次 DECLARE @uid1 int, @uid2 int SELECT @uid1 = uid FROM sysusers WHERE name = 'GLOBAL_COMET_US_1' SEL...

    #sql #t-sql #sql-server #schema-comparison #database #devto
  • 2天前 · software

    比较4

    sql -- 首先获取用户ID(可选),以提高可读性 DECLARE @uid1 int, @uid2 int SELECT @uid1 = uid FROM sysusers WHERE name = 'GLOBAL_COMET_US_1' SELE...

    #sql #sql-server #t-sql #database #schema-comparison #devto
  • 2天前 · software

    比较3

    sql SELECT 'ONLY_IN_US_1' AS location, t1.table_name FROM dba_tables t1 LEFT JOIN dba_tables t2 ON t1.table_name = t2.table_name AND t2.owner = 'GL...

    #SQL #Oracle #database #schema comparison #dba_tables #UNION #LEFT JOIN
  • 2天前 · software

    比较2

    sql SELECT CASE WHEN t1.table_name IS NOT NULL AND t2.table_name IS NULL THEN 'ONLY_IN_US_1' WHEN t2.table_name IS NOT NULL AND...

    #SQL #Oracle #database #full outer join #table comparison #dba_tables #data migration
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