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- # xorm
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- [English](https://github.com/go-xorm/xorm/blob/master/README.md)
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- xorm是一个简单而强大的Go语言ORM库. 通过它可以使数据库操作非常简便。
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- [![CircleCI](https://circleci.com/gh/go-xorm/xorm/tree/master.svg?style=svg)](https://circleci.com/gh/go-xorm/xorm/tree/master) [![Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/go-xorm/xorm?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
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- # 注意
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- 最新的版本有不兼容的更新,您必须使用 `engine.ShowSQL()` 和 `engine.Logger().SetLevel()` 来替代 `engine.ShowSQL = `, `engine.ShowInfo = ` 等等。
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- ## 特性
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- * 支持Struct和数据库表之间的灵活映射,并支持自动同步
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- * 事务支持
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- * 同时支持原始SQL语句和ORM操作的混合执行
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- * 使用连写来简化调用
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- * 支持使用Id, In, Where, Limit, Join, Having, Table, Sql, Cols等函数和结构体等方式作为条件
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- * 支持级联加载Struct
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- * 支持缓存
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- * 支持根据数据库自动生成xorm的结构体
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- * 支持记录版本(即乐观锁)
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- * 内置SQL Builder支持
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- ## 驱动支持
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- 目前支持的Go数据库驱动和对应的数据库如下:
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- * Mysql: [github.com/go-sql-driver/mysql](https://github.com/go-sql-driver/mysql)
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- * MyMysql: [github.com/ziutek/mymysql/godrv](https://github.com/ziutek/mymysql/godrv)
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- * Postgres: [github.com/lib/pq](https://github.com/lib/pq)
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- * Tidb: [github.com/pingcap/tidb](https://github.com/pingcap/tidb)
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- * SQLite: [github.com/mattn/go-sqlite3](https://github.com/mattn/go-sqlite3)
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- * MsSql: [github.com/denisenkom/go-mssqldb](https://github.com/denisenkom/go-mssqldb)
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- * MsSql: [github.com/lunny/godbc](https://github.com/lunny/godbc)
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- * Oracle: [github.com/mattn/go-oci8](https://github.com/mattn/go-oci8) (试验性支持)
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- ## 更新日志
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- * **v0.6.0**
- * 去除对 ql 的支持
- * 新增条件查询分析器 [github.com/go-xorm/builder](https://github.com/go-xorm/builder), 从因此 `Where, And, Or` 函数
- 将可以用 `builder.Cond` 作为条件组合
- * 新增 Sum, SumInt, SumInt64 和 NotIn 函数
- * Bug修正
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- * **v0.5.0**
- * logging接口进行不兼容改变
- * Bug修正
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- * **v0.4.5**
- * bug修正
- * extends 支持无限级
- * Delete Limit 支持
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- * **v0.4.4**
- * Tidb 数据库支持
- * QL 试验性支持
- * sql.NullString支持
- * ForUpdate 支持
- * bug修正
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- [更多更新日志...](https://github.com/go-xorm/manual-zh-CN/tree/master/chapter-16)
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- ## 安装
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- 推荐使用 [gopm](https://github.com/gpmgo/gopm) 进行安装:
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- gopm get github.com/go-xorm/xorm
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- 或者您也可以使用go工具进行安装:
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- go get github.com/go-xorm/xorm
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- ## 文档
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- * [操作指南](http://xorm.io/docs)
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- * [GoWalker代码文档](http://gowalker.org/github.com/go-xorm/xorm)
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- * [Godoc代码文档](http://godoc.org/github.com/go-xorm/xorm)
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- # 快速开始
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- * 第一步创建引擎,driverName, dataSourceName和database/sql接口相同
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- ```Go
- engine, err := xorm.NewEngine(driverName, dataSourceName)
- ```
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- * 定义一个和表同步的结构体,并且自动同步结构体到数据库
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- ```Go
- type User struct {
- Id int64
- Name string
- Salt string
- Age int
- Passwd string `xorm:"varchar(200)"`
- Created time.Time `xorm:"created"`
- Updated time.Time `xorm:"updated"`
- }
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- err := engine.Sync2(new(User))
- ```
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- * 最原始的也支持SQL语句查询,返回的结果类型为 []map[string][]byte
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- ```Go
- results, err := engine.Query("select * from user")
- ```
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- * 执行一个SQL语句
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- ```Go
- affected, err := engine.Exec("update user set age = ? where name = ?", age, name)
- ```
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- * 插入一条或者多条记录
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- ```Go
- affected, err := engine.Insert(&user)
- // INSERT INTO struct () values ()
- affected, err := engine.Insert(&user1, &user2)
- // INSERT INTO struct1 () values ()
- // INSERT INTO struct2 () values ()
- affected, err := engine.Insert(&users)
- // INSERT INTO struct () values (),(),()
- affected, err := engine.Insert(&user1, &users)
- // INSERT INTO struct1 () values ()
- // INSERT INTO struct2 () values (),(),()
- ```
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- * 查询单条记录
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- ```Go
- has, err := engine.Get(&user)
- // SELECT * FROM user LIMIT 1
- has, err := engine.Where("name = ?", name).Desc("id").Get(&user)
- // SELECT * FROM user WHERE name = ? ORDER BY id DESC LIMIT 1
- ```
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- * 查询多条记录,当然可以使用Join和extends来组合使用
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- ```Go
- var users []User
- err := engine.Where("name = ?", name).And("age > 10").Limit(10, 0).Find(&users)
- // SELECT * FROM user WHERE name = ? AND age > 10 limit 0 offset 10
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- type Detail struct {
- Id int64
- UserId int64 `xorm:"index"`
- }
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- type UserDetail struct {
- User `xorm:"extends"`
- Detail `xorm:"extends"`
- }
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- var users []UserDetail
- err := engine.Table("user").Select("user.*, detail.*")
- Join("INNER", "detail", "detail.user_id = user.id").
- Where("user.name = ?", name).Limit(10, 0).
- Find(&users)
- // SELECT user.*, detail.* FROM user INNER JOIN detail WHERE user.name = ? limit 0 offset 10
- ```
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- * 根据条件遍历数据库,可以有两种方式: Iterate and Rows
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- ```Go
- err := engine.Iterate(&User{Name:name}, func(idx int, bean interface{}) error {
- user := bean.(*User)
- return nil
- })
- // SELECT * FROM user
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- rows, err := engine.Rows(&User{Name:name})
- // SELECT * FROM user
- defer rows.Close()
- bean := new(Struct)
- for rows.Next() {
- err = rows.Scan(bean)
- }
- ```
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- * 更新数据,除非使用Cols,AllCols函数指明,默认只更新非空和非0的字段
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- ```Go
- affected, err := engine.Id(1).Update(&user)
- // UPDATE user SET ... Where id = ?
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- affected, err := engine.Update(&user, &User{Name:name})
- // UPDATE user SET ... Where name = ?
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- var ids = []int64{1, 2, 3}
- affected, err := engine.In(ids).Update(&user)
- // UPDATE user SET ... Where id IN (?, ?, ?)
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- // force update indicated columns by Cols
- affected, err := engine.Id(1).Cols("age").Update(&User{Name:name, Age: 12})
- // UPDATE user SET age = ?, updated=? Where id = ?
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- // force NOT update indicated columns by Omit
- affected, err := engine.Id(1).Omit("name").Update(&User{Name:name, Age: 12})
- // UPDATE user SET age = ?, updated=? Where id = ?
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- affected, err := engine.Id(1).AllCols().Update(&user)
- // UPDATE user SET name=?,age=?,salt=?,passwd=?,updated=? Where id = ?
- ```
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- * 删除记录,需要注意,删除必须至少有一个条件,否则会报错。要清空数据库可以用EmptyTable
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- ```Go
- affected, err := engine.Where(...).Delete(&user)
- // DELETE FROM user Where ...
- ```
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- * 获取记录条数
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- ```Go
- counts, err := engine.Count(&user)
- // SELECT count(*) AS total FROM user
- ```
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- * 条件编辑器
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- ```Go
- err := engine.Where(builder.NotIn("a", 1, 2).And(builder.In("b", "c", "d", "e"))).Find(&users)
- // SELECT id, name ... FROM user WHERE a NOT IN (?, ?) AND b IN (?, ?, ?)
- ```
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- # 案例
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- * [github.com/m3ng9i/qreader](https://github.com/m3ng9i/qreader)
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- * [Wego](http://github.com/go-tango/wego)
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- * [Docker.cn](https://docker.cn/)
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- * [Gogs](http://try.gogits.org) - [github.com/gogits/gogs](http://github.com/gogits/gogs)
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- * [Gowalker](http://gowalker.org) - [github.com/Unknwon/gowalker](http://github.com/Unknwon/gowalker)
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- * [Gobuild.io](http://gobuild.io) - [github.com/shxsun/gobuild](http://github.com/shxsun/gobuild)
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- * [Sudo China](http://sudochina.com) - [github.com/insionng/toropress](http://github.com/insionng/toropress)
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- * [Godaily](http://godaily.org) - [github.com/govc/godaily](http://github.com/govc/godaily)
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- * [YouGam](http://www.yougam.com/)
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- * [GoCMS - github.com/zzboy/GoCMS](https://github.com/zzdboy/GoCMS)
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- * [GoBBS - gobbs.domolo.com](http://gobbs.domolo.com/)
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- * [go-blog](http://wangcheng.me) - [github.com/easykoo/go-blog](https://github.com/easykoo/go-blog)
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- ## 讨论
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- 请加入QQ群:280360085 进行讨论。
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- ## 贡献
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- 如果您也想为Xorm贡献您的力量,请查看 [CONTRIBUTING](https://github.com/go-xorm/xorm/blob/master/CONTRIBUTING.md)
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- ## LICENSE
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- BSD License
- [http://creativecommons.org/licenses/BSD/](http://creativecommons.org/licenses/BSD/)
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