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Peewee 3.13.1 Document
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Hacks

 来源:Peewee 浏览 536 扫码 分享 2020-02-03 13:59:35
  • Hacks

    Hacks

    Collected hacks using peewee. Have a cool hack you’d like to share? Open an issue on GitHub or contact me.

    • Optimistic Locking
    • Top object per group
    • Top N objects per group
    • Writing custom functions with SQLite
    • Date math
    当前内容版权归 Peewee 或其关联方所有，如需对内容或内容相关联开源项目进行关注与资助，请访问 Peewee .
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    • Instroduction
    • Installing and Testing
      • Installing with git
      • Running tests
      • Optional dependencies
      • Note on the SQLite extensions
    • Quickstart
      • Model Definition
      • Storing data
      • Retrieving Data
      • Database
      • What next?
    • Example app
      • Running the example
      • Diving into the code
      • More examples
    • Using Peewee Interactively
    • Contributing
      • Patches
      • Bugs
      • Questions
    • Database
      • Initializing a Database
      • Using Postgresql
      • Using CockroachDB
      • Using SQLite
      • Using MySQL
      • Connecting using a Database URL
      • Run-time database configuration
      • Dynamically defining a database
      • Setting the database at run-time
      • Connection Management
      • Connection Pooling
      • Testing Peewee Applications
      • Async with Gevent
      • Framework Integration
      • Executing Queries
      • Managing Transactions
      • Database Errors
      • Logging queries
      • Adding a new Database Driver
    • Models and Fields
      • Fields
      • Creating model tables
      • Model options and table metadata
      • Indexes and Constraints
      • Primary Keys, Composite Keys and other Tricks
      • Self-referential foreign keys
      • Circular foreign key dependencies
    • Querying
      • Creating a new record
      • Bulk inserts
      • Updating existing records
      • Atomic updates
      • Deleting records
      • Selecting a single record
      • Create or get
      • Selecting multiple records
      • Filtering records
      • Sorting records
      • Getting random records
      • Paginating records
      • Counting records
      • Aggregating records
      • Retrieving Scalar Values
      • Window functions
      • Retrieving row tuples / dictionaries / namedtuples
      • Returning Clause
      • 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
      • Database
      • Query-builder
      • Fields
      • Schema Manager
      • Model
      • Query-builder Internals
      • Constants and Helpers
    • SQLite Extensions
      • Getting started
      • APIs
      • Additional Features
    • Playhouse, extensions to Peewee
      • Sqlite Extensions
      • SqliteQ
      • Sqlite User-Defined Functions
      • apsw, an advanced sqlite driver
      • Sqlcipher backend
      • Postgresql Extensions
      • Cockroach Database
      • MySQL Extensions
      • DataSet
      • Fields
      • Hybrid Attributes
      • Key/Value Store
      • Shortcuts
      • Signal support
      • pwiz, a model generator
      • Schema Migrations
      • Reflection
      • Database URL
      • Connection pool
      • Test Utils
      • Flask Utils
    • Query Examples
      • Model Definitions
      • Schema Creation
      • Basic Exercises
      • Joins and Subqueries
      • Modifying Data
      • Aggregation
      • Recursion
    • Hacks
      • Optimistic Locking
      • Top object per group
      • Top N objects per group
      • Writing custom functions with SQLite
      • Date math
    • Changes in 3.0
      • Backwards-incompatible
      • New stuff
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