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Foreign Keys and Joins

 来源:Peewee 浏览 367 扫码 分享 2020-02-03 13:59:35
  • Foreign Keys and Joins

    Foreign Keys and Joins

    This section have been moved into its own document: Relationships and Joins.

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    • Instroduction
    • Installing and Testing
      • Installing with git
      • Running tests
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      • Note on the SQLite extensions
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      • Indexes and Constraints
      • Primary Keys, Composite Keys and other Tricks
      • Self-referential foreign keys
      • Circular foreign key dependencies
    • Querying
      • Creating a new record
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      • Create or get
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      • Window functions
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      • Common Table Expressions
      • Foreign Keys and Joins
    • Query operators
      • Three valued logic
      • Adding user-defined operators
      • Expressions
      • SQL Functions
      • SQL Helper
      • Security and SQL Injection
    • Relationships and Joins
      • Model definitions
      • Performing simple joins
      • Joining multiple tables
      • Selecting from multiple sources
      • Subqueries
      • Multiple foreign-keys to the same Model
      • Joining on arbitrary fields
      • Self-joins
      • Implementing Many to Many
      • Avoiding the N+1 problem
    • API Documentation
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      • Writing custom functions with SQLite
      • Date math
    • Changes in 3.0
      • Backwards-incompatible
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