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Gorm
1.
GORM 剖析与最佳实践- 2 by
JINZHU GORM - The fantastic ORM library for Golang 2020-12
2.
ABOUT ME Github @jinzhu 字节跳动
@zhangjinzhu GORM https://github.com/go-gorm/gorm https://gorm.io (⽂档) https://gorm.cn(国内 CDN) Jinzhu / 张⾦柱
3.
GORM 基本介绍 “ 设计简洁、功能强⼤、⾃由扩展的全功能
ORM ” • 设计原则:API 精简、测试优先、最⼩惊讶、灵活扩展、⽆依赖 可信赖 • 功能完善: • 关联:⼀对⼀、⼀对多、单表⾃关联、多态关联;Preload、Joins 预加载;关联模式 • 事务:嵌套事务, Save Point • Hooks、Callbacks ⾃由扩展 • 多数据库、读写分离、Prometheus、Prepared Stmt、查询优化器、批量数据处理、代码共享、⼦查询、DryRun • SQL Builder、Smart Migration、复合主键、⾃定义类型 (JSON等)、SQL 表达式查询创建更新、虚拟字段… • 真 • 跨数据库兼容
4.
GORM 基本介绍 -
初始化
5.
CRUD - CREATE
6.
CRUD - BATCH
CREATE
7.
CRUD - Upsert
& OnConflict
8.
CRUD - 加速
CREATE
9.
CRUD - Create
/ Update 使⽤ SQL 表达式(⾃定义数据类型)
10.
CRUD - Create
使⽤默认值
11.
CRUD - Create
/ Update 零值问题
12.
CRUD - 批量更新
13.
CRUD - Update
使⽤ SQL 表达式 / SubQuery
14.
CRUD - Update
检查字段有⽆修改
15.
CRUD - 关联的
Create / Update
16.
CRUD - 关联模式
17.
CRUD - 关联的级连删除
18.
CRUD - 软删除
19.
CRUD - Query
20.
CRUD - 条件查询
21.
CRUD - Query
with SELECT
22.
CRUD - SubQuery
/ Group Conditions
23.
CRUD - 使⽤
SQL 表达式查询
24.
CRUD - Query
Clauses (查询优化器 / Comments / Locking)
25.
CRUD - SQL
Builder & 批量处理
26.
CRUD - 命名参数
27.
CRUD - 关联
Preload / Joins 预加载
28.
To Be Continue
- Checklist • Conventions • Model Field Tags • 多字段的时间追踪 (Unix Seconds/Milli/Nano Seconds) • 字段读写权限权限 • Query 的⼀些 API: Pluck, FirstOrInit, FirstOrCreate (Assign, Attrs) • 关联定义(⼀对⼀,多对多,⼀对多,单表⾃关联,多态)、⾃定义 foreign key, reference、复合外键、⾃定义 JoinTable • ⾃定义数据类型 • WithContext • Error 处理 • Set、Get、InstanceSet、InstanceGet • Clause / Statement • Hooks / Callbacks • 不同数据库连接参数 / ⾃定义 driver / 使⽤现有连接 / 如何扩展 / 数据库连接池 • 分库分表 / 代码共享 • 读写分离 / 多数据库 • Transactions, Nested Transactions, Save Point, RollbackTo to Saved Point • Logger • gorm.Config • Session 模式 • Embedded Struct • 修改默认命名策略 • DryRun Mode • 复合主键 • Indexes / Checker / Constraints • Method Chain 安全性 • Prometheus • SQL 注⼊安全性 • Migration • …
29.
Q&A GORM 剖析与最佳实践
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