engine, err := xorm.NewEngine(driverName, dataSourceName)

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"` } err := engine.Sync2(new(User))

dataSourceNameSlice := []string{masterDataSourceName, slave1DataSourceName, slave2DataSourceName} engineGroup, err := xorm.NewEngineGroup(driverName, dataSourceNameSlice)

masterEngine, err := xorm.NewEngine(driverName, masterDataSourceName) slave1Engine, err := xorm.NewEngine(driverName, slave1DataSourceName) slave2Engine, err := xorm.NewEngine(driverName, slave2DataSourceName) engineGroup, err := xorm.NewEngineGroup(masterEngine, []*Engine{slave1Engine, slave2Engine})

results, err := engine.Query("select * from user") results, err := engine.Where("a = 1").Query() results, err := engine.QueryString("select * from user") results, err := engine.Where("a = 1").QueryString() results, err := engine.QueryInterface("select * from user") results, err := engine.Where("a = 1").QueryInterface()

affected, err := engine.Exec("update user set age = ? where name = ?", age, name)

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 (),(),()

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 var name string has, err := engine.Table(&user).Where("id = ?", id).Cols("name").Get(&name) // SELECT name FROM user WHERE id = ? var id int64 has, err := engine.Table(&user).Where("name = ?", name).Cols("id").Get(&id) has, err := engine.SQL("select id from user").Get(&id) // SELECT id FROM user WHERE name = ? var valuesMap = make(map[string]string) has, err := engine.Table(&user).Where("id = ?", id).Get(&valuesMap) // SELECT * FROM user WHERE id = ? var valuesSlice = make([]interface{}, len(cols)) has, err := engine.Table(&user).Where("id = ?", id).Cols(cols...).Get(&valuesSlice) // SELECT col1, col2, col3 FROM user WHERE id = ?

has, err := testEngine.Exist(new(RecordExist)) // SELECT * FROM record_exist LIMIT 1 has, err = testEngine.Exist(&RecordExist{ Name: "test1",	}) // SELECT * FROM record_exist WHERE name = ? LIMIT 1 has, err = testEngine.Where("name = ?", "test1").Exist(&RecordExist{}) // SELECT * FROM record_exist WHERE name = ? LIMIT 1 has, err = testEngine.SQL("select * from record_exist where name = ?", "test1").Exist() // select * from record_exist where name = ? has, err = testEngine.Table("record_exist").Exist() // SELECT * FROM record_exist LIMIT 1 has, err = testEngine.Table("record_exist").Where("name = ?", "test1").Exist() // SELECT * FROM record_exist WHERE name = ? LIMIT 1

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 10 offset 0 type Detail struct { Id int64 UserId int64 `xorm:"index"` } type UserDetail struct { User `xorm:"extends"` Detail `xorm:"extends"` } 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 10 offset 0

err := engine.Iterate(&User{Name:name}, func(idx int, bean interface{}) error { user := bean.(*User) return nil }) // SELECT * FROM user err := engine.BufferSize(100).Iterate(&User{Name:name}, func(idx int, bean interface{}) error { user := bean.(*User) return nil }) // SELECT * FROM user Limit 0, 100 // SELECT * FROM user Limit 101, 100 rows, err := engine.Rows(&User{Name:name}) // SELECT * FROM user defer rows.Close() bean := new(Struct) for rows.Next() { err = rows.Scan(bean) }

affected, err := engine.ID(1).Update(&user) // UPDATE user SET ... Where id = ? affected, err := engine.Update(&user, &User{Name:name}) // UPDATE user SET ... Where name = ? var ids = []int64{1, 2, 3} affected, err := engine.In("id", ids).Update(&user) // UPDATE user SET ... Where id IN (?, ?, ?) // 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 = ? // 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 = ? affected, err := engine.ID(1).AllCols().Update(&user) // UPDATE user SET name=?,age=?,salt=?,passwd=?,updated=? Where id = ?

affected, err := engine.Where(...).Delete(&user) // DELETE FROM user Where ... affected, err := engine.ID(2).Delete(&user) // DELETE FROM user Where id = ?

counts, err := engine.Count(&user) // SELECT count(*) AS total FROM user

var users []User counts, err := engine.FindAndCount(&users)

agesFloat64, err := engine.Sum(&user, "age") // SELECT sum(age) AS total FROM user agesInt64, err := engine.SumInt(&user, "age") // SELECT sum(age) AS total FROM user sumFloat64Slice, err := engine.Sums(&user, "age", "score") // SELECT sum(age), sum(score) FROM user sumInt64Slice, err := engine.SumsInt(&user, "age", "score") // SELECT sum(age), sum(score) FROM user

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 (?, ?, ?)

session := engine.NewSession() defer session.Close() user1 := Userinfo{Username: "xiaoxiao", Departname: "dev", Alias: "lunny", Created: time.Now()} if _, err := session.Insert(&user1); err != nil { return err } user2 := Userinfo{Username: "yyy"} if _, err := session.Where("id = ?", 2).Update(&user2); err != nil { return err } if _, err := session.Exec("delete from userinfo where username = ?", user2.Username); err != nil { return err } return nil

session := engine.NewSession() defer session.Close() // add Begin() before any action if err := session.Begin(); err != nil { // if returned then will rollback automatically return err } user1 := Userinfo{Username: "xiaoxiao", Departname: "dev", Alias: "lunny", Created: time.Now()} if _, err := session.Insert(&user1); err != nil { return err } user2 := Userinfo{Username: "yyy"} if _, err := session.Where("id = ?", 2).Update(&user2); err != nil { return err } if _, err := session.Exec("delete from userinfo where username = ?", user2.Username); err != nil { return err } // add Commit() after all actions return session.Commit()

res, err := engine.Transaction(func(session *xorm.Session) (interface{}, error) { user1 := Userinfo{Username: "xiaoxiao", Departname: "dev", Alias: "lunny", Created: time.Now()} if _, err := session.Insert(&user1); err != nil { return nil, err } user2 := Userinfo{Username: "yyy"} if _, err := session.Where("id = ?", 2).Update(&user2); err != nil { return nil, err } if _, err := session.Exec("delete from userinfo where username = ?", user2.Username); err != nil { return nil, err } return nil, nil })

sess := engine.NewSession() defer sess.Close() var context = xorm.NewMemoryContextCache() var c2 ContextGetStruct has, err := sess.ID(1).ContextCache(context).Get(&c2) assert.NoError(t, err) assert.True(t, has) assert.EqualValues(t, 1, c2.Id) assert.EqualValues(t, "1", c2.Name) sql, args := sess.LastSQL() assert.True(t, len(sql) > 0) assert.True(t, len(args) > 0) var c3 ContextGetStruct has, err = sess.ID(1).ContextCache(context).Get(&c3) assert.NoError(t, err) assert.True(t, has) assert.EqualValues(t, 1, c3.Id) assert.EqualValues(t, "1", c3.Name) sql, args = sess.LastSQL() assert.True(t, len(sql) == 0) assert.True(t, len(args) == 0)