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update READMEs

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Lunny Xiao 2017-12-04 22:05:36 +08:00
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70
README.md
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@ -148,11 +148,14 @@ affected, err := engine.Exec("update user set age = ? where name = ?", age, name
```Go ```Go
affected, err := engine.Insert(&user) affected, err := engine.Insert(&user)
// INSERT INTO struct () values () // INSERT INTO struct () values ()
affected, err := engine.Insert(&user1, &user2) affected, err := engine.Insert(&user1, &user2)
// INSERT INTO struct1 () values () // INSERT INTO struct1 () values ()
// INSERT INTO struct2 () values () // INSERT INTO struct2 () values ()
affected, err := engine.Insert(&users) affected, err := engine.Insert(&users)
// INSERT INTO struct () values (),(),() // INSERT INTO struct () values (),(),()
affected, err := engine.Insert(&user1, &users) affected, err := engine.Insert(&user1, &users)
// INSERT INTO struct1 () values () // INSERT INTO struct1 () values ()
// INSERT INTO struct2 () values (),(),() // INSERT INTO struct2 () values (),(),()
@ -163,18 +166,23 @@ affected, err := engine.Insert(&user1, &users)
```Go ```Go
has, err := engine.Get(&user) has, err := engine.Get(&user)
// SELECT * FROM user LIMIT 1 // SELECT * FROM user LIMIT 1
has, err := engine.Where("name = ?", name).Desc("id").Get(&user) has, err := engine.Where("name = ?", name).Desc("id").Get(&user)
// SELECT * FROM user WHERE name = ? ORDER BY id DESC LIMIT 1 // SELECT * FROM user WHERE name = ? ORDER BY id DESC LIMIT 1
var name string var name string
has, err := engine.Where("id = ?", id).Cols("name").Get(&name) has, err := engine.Where("id = ?", id).Cols("name").Get(&name)
// SELECT name FROM user WHERE id = ? // SELECT name FROM user WHERE id = ?
var id int64 var id int64
has, err := engine.Where("name = ?", name).Cols("id").Get(&id) has, err := engine.Where("name = ?", name).Cols("id").Get(&id)
has, err := engine.SQL("select id from user").Get(&id) has, err := engine.SQL("select id from user").Get(&id)
// SELECT id FROM user WHERE name = ? // SELECT id FROM user WHERE name = ?
var valuesMap = make(map[string]string) var valuesMap = make(map[string]string)
has, err := engine.Where("id = ?", id).Get(&valuesMap) has, err := engine.Where("id = ?", id).Get(&valuesMap)
// SELECT * FROM user WHERE id = ? // SELECT * FROM user WHERE id = ?
var valuesSlice = make([]interface{}, len(cols)) var valuesSlice = make([]interface{}, len(cols))
has, err := engine.Where("id = ?", id).Cols(cols...).Get(&valuesSlice) has, err := engine.Where("id = ?", id).Cols(cols...).Get(&valuesSlice)
// SELECT col1, col2, col3 FROM user WHERE id = ? // SELECT col1, col2, col3 FROM user WHERE id = ?
@ -185,16 +193,21 @@ has, err := engine.Where("id = ?", id).Cols(cols...).Get(&valuesSlice)
```Go ```Go
has, err := testEngine.Exist(new(RecordExist)) has, err := testEngine.Exist(new(RecordExist))
// SELECT * FROM record_exist LIMIT 1 // SELECT * FROM record_exist LIMIT 1
has, err = testEngine.Exist(&RecordExist{ has, err = testEngine.Exist(&RecordExist{
Name: "test1", Name: "test1",
}) })
// SELECT * FROM record_exist WHERE name = ? LIMIT 1 // SELECT * FROM record_exist WHERE name = ? LIMIT 1
has, err = testEngine.Where("name = ?", "test1").Exist(&RecordExist{}) has, err = testEngine.Where("name = ?", "test1").Exist(&RecordExist{})
// SELECT * FROM record_exist WHERE name = ? LIMIT 1 // SELECT * FROM record_exist WHERE name = ? LIMIT 1
has, err = testEngine.SQL("select * from record_exist where name = ?", "test1").Exist() has, err = testEngine.SQL("select * from record_exist where name = ?", "test1").Exist()
// select * from record_exist where name = ? // select * from record_exist where name = ?
has, err = testEngine.Table("record_exist").Exist() has, err = testEngine.Table("record_exist").Exist()
// SELECT * FROM record_exist LIMIT 1 // SELECT * FROM record_exist LIMIT 1
has, err = testEngine.Table("record_exist").Where("name = ?", "test1").Exist() has, err = testEngine.Table("record_exist").Where("name = ?", "test1").Exist()
// SELECT * FROM record_exist WHERE name = ? LIMIT 1 // SELECT * FROM record_exist WHERE name = ? LIMIT 1
``` ```
@ -279,7 +292,9 @@ affected, err := engine.Id(1).AllCols().Update(&user)
```Go ```Go
affected, err := engine.Where(...).Delete(&user) affected, err := engine.Where(...).Delete(&user)
// DELETE FROM user Where ... // DELETE FROM user Where ...
affected, err := engine.Id(2).Delete(&user)
affected, err := engine.ID(2).Delete(&user)
// DELETE FROM user Where id = ?
``` ```
* `Count` count records * `Count` count records
@ -312,6 +327,59 @@ err := engine.Where(builder.NotIn("a", 1, 2).And(builder.In("b", "c", "d", "e"))
// SELECT id, name ... FROM user WHERE a NOT IN (?, ?) AND b IN (?, ?, ?) // SELECT id, name ... FROM user WHERE a NOT IN (?, ?) AND b IN (?, ?, ?)
``` ```
* Multiple operations in one go routine, no transation here but resue session memory
```Go
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
```
* Transation should on one go routine. There is transaction and resue session memory
```Go
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()
```
# Cases # Cases
* [studygolang](http://studygolang.com/) - [github.com/studygolang/studygolang](https://github.com/studygolang/studygolang) * [studygolang](http://studygolang.com/) - [github.com/studygolang/studygolang](https://github.com/studygolang/studygolang)

69
README_CN.md
View File

@ -155,11 +155,14 @@ affected, err := engine.Exec("update user set age = ? where name = ?", age, name
```Go ```Go
affected, err := engine.Insert(&user) affected, err := engine.Insert(&user)
// INSERT INTO struct () values () // INSERT INTO struct () values ()
affected, err := engine.Insert(&user1, &user2) affected, err := engine.Insert(&user1, &user2)
// INSERT INTO struct1 () values () // INSERT INTO struct1 () values ()
// INSERT INTO struct2 () values () // INSERT INTO struct2 () values ()
affected, err := engine.Insert(&users) affected, err := engine.Insert(&users)
// INSERT INTO struct () values (),(),() // INSERT INTO struct () values (),(),()
affected, err := engine.Insert(&user1, &users) affected, err := engine.Insert(&user1, &users)
// INSERT INTO struct1 () values () // INSERT INTO struct1 () values ()
// INSERT INTO struct2 () values (),(),() // INSERT INTO struct2 () values (),(),()
@ -170,18 +173,23 @@ affected, err := engine.Insert(&user1, &users)
```Go ```Go
has, err := engine.Get(&user) has, err := engine.Get(&user)
// SELECT * FROM user LIMIT 1 // SELECT * FROM user LIMIT 1
has, err := engine.Where("name = ?", name).Desc("id").Get(&user) has, err := engine.Where("name = ?", name).Desc("id").Get(&user)
// SELECT * FROM user WHERE name = ? ORDER BY id DESC LIMIT 1 // SELECT * FROM user WHERE name = ? ORDER BY id DESC LIMIT 1
var name string var name string
has, err := engine.Where("id = ?", id).Cols("name").Get(&name) has, err := engine.Where("id = ?", id).Cols("name").Get(&name)
// SELECT name FROM user WHERE id = ? // SELECT name FROM user WHERE id = ?
var id int64 var id int64
has, err := engine.Where("name = ?", name).Cols("id").Get(&id) has, err := engine.Where("name = ?", name).Cols("id").Get(&id)
has, err := engine.SQL("select id from user").Get(&id) has, err := engine.SQL("select id from user").Get(&id)
// SELECT id FROM user WHERE name = ? // SELECT id FROM user WHERE name = ?
var valuesMap = make(map[string]string) var valuesMap = make(map[string]string)
has, err := engine.Where("id = ?", id).Get(&valuesMap) has, err := engine.Where("id = ?", id).Get(&valuesMap)
// SELECT * FROM user WHERE id = ? // SELECT * FROM user WHERE id = ?
var valuesSlice = make([]interface{}, len(cols)) var valuesSlice = make([]interface{}, len(cols))
has, err := engine.Where("id = ?", id).Cols(cols...).Get(&valuesSlice) has, err := engine.Where("id = ?", id).Cols(cols...).Get(&valuesSlice)
// SELECT col1, col2, col3 FROM user WHERE id = ? // SELECT col1, col2, col3 FROM user WHERE id = ?
@ -192,16 +200,21 @@ has, err := engine.Where("id = ?", id).Cols(cols...).Get(&valuesSlice)
```Go ```Go
has, err := testEngine.Exist(new(RecordExist)) has, err := testEngine.Exist(new(RecordExist))
// SELECT * FROM record_exist LIMIT 1 // SELECT * FROM record_exist LIMIT 1
has, err = testEngine.Exist(&RecordExist{ has, err = testEngine.Exist(&RecordExist{
Name: "test1", Name: "test1",
}) })
// SELECT * FROM record_exist WHERE name = ? LIMIT 1 // SELECT * FROM record_exist WHERE name = ? LIMIT 1
has, err = testEngine.Where("name = ?", "test1").Exist(&RecordExist{}) has, err = testEngine.Where("name = ?", "test1").Exist(&RecordExist{})
// SELECT * FROM record_exist WHERE name = ? LIMIT 1 // SELECT * FROM record_exist WHERE name = ? LIMIT 1
has, err = testEngine.SQL("select * from record_exist where name = ?", "test1").Exist() has, err = testEngine.SQL("select * from record_exist where name = ?", "test1").Exist()
// select * from record_exist where name = ? // select * from record_exist where name = ?
has, err = testEngine.Table("record_exist").Exist() has, err = testEngine.Table("record_exist").Exist()
// SELECT * FROM record_exist LIMIT 1 // SELECT * FROM record_exist LIMIT 1
has, err = testEngine.Table("record_exist").Where("name = ?", "test1").Exist() has, err = testEngine.Table("record_exist").Where("name = ?", "test1").Exist()
// SELECT * FROM record_exist WHERE name = ? LIMIT 1 // SELECT * FROM record_exist WHERE name = ? LIMIT 1
``` ```
@ -286,6 +299,9 @@ affected, err := engine.Id(1).AllCols().Update(&user)
```Go ```Go
affected, err := engine.Where(...).Delete(&user) affected, err := engine.Where(...).Delete(&user)
// DELETE FROM user Where ... // DELETE FROM user Where ...
affected, err := engine.ID(2).Delete(&user)
// DELETE FROM user Where id = ?
``` ```
* `Count` 获取记录条数 * `Count` 获取记录条数
@ -318,6 +334,59 @@ err := engine.Where(builder.NotIn("a", 1, 2).And(builder.In("b", "c", "d", "e"))
// SELECT id, name ... FROM user WHERE a NOT IN (?, ?) AND b IN (?, ?, ?) // SELECT id, name ... FROM user WHERE a NOT IN (?, ?) AND b IN (?, ?, ?)
``` ```
* 在一个Go程中多次操作数据库，但没有事务
```Go
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
```
* 在一个Go程中有事务
```Go
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()
```
# 案例 # 案例
* [Go语言中文网](http://studygolang.com/) - [github.com/studygolang/studygolang](https://github.com/studygolang/studygolang) * [Go语言中文网](http://studygolang.com/) - [github.com/studygolang/studygolang](https://github.com/studygolang/studygolang)