gomysql

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###介绍

gomysql是基于go-sql-driver基础上开发的orm，这是一个轻量级的库。它会使数据库的增删改查变得非常容易。当然也是测试开发版，会一直优化和更新！请时刻关注我们

###安装

go get github.com/go-sql-driver/mysql
go get github.com/widuu/goini
go get github.com/widuu/gomysql

###依赖的包

mysql :github.com/Go-SQL-Driver/MySQL

goini :github.com/widuu/goini

###使用教程

设置配置文件

[database]
username = mysql username
password = mysql password
hostname = mysql host
charset =  mysql charset
database = database name
port = 	   mysql port

初始化配置

c, _ := gomysql.SetConfig("./conf/conf.ini") //根据配置文件，连接数据库

查询数据

t := c.SetTable("user")                      //设置要处理的表名
data := t.FindOne()                          //查询表的一条数据，返回map[int]map[string]string格式
gomysql.Print(data)                          //打印数据信息，返回如下截图的数据格式

data := t.Fileds("id", "password", "username").Where("id =12").FindOne() //Fileds 查询字段,Where where条件FindOne()查询一条
//limit sql中的limit OrderBy sql中查询的OrderBy
data  = c.SetTable("user").Fileds("id", "password", "username").Where("id>1").Limit(1, 5).OrderBy("id Desc").FindAll() 
data  = t.FindAll() //查询所有数据，其中OrderBy() Limit() Where() Fileds()等设置条件
gomysql.Print(data) //查询的数据都可以用Print()方法友好打印出来信息

添加数据

 var value = make(map[string]interface{})  //设置map存储数据，map[key]value
 value["password"] = "mima3"    
 value["username"] = "xiaowei"
 value["id"] = 10
 t := c.SetTable("user")                   //设置增加的数据表
 t.SetPk("id")                             //设置主键自增的字段名称
 i,err := t.Insert(value)                  // 插入数据，返回增加个数和错误信息。返回最后增长的id和错误信息

修改数据

var value = make(map[string]interface{})
value["password"] = "mima3"
value["username"] = "xiaowei"
n, err := c.SetTable("user").Where("id =5").Update(value)  //设置表，条件和修改的内容，返回影响条数和错误信息

删除数据

n, err := c.SetTable("user").Delete("id = 6")   //设置删除的表和数据，返回影响条数和错误信息

关联操作

INNER JOIN

t := c.SetTable("user")
//下面相当于sql语句，打印出是Select user.id,data.keywords,user.username,user.password from user INNER JOIN data ON user.id = data.id
data := t.Fileds("user.id", "data.keywords", "user.username", "user.password").Join("data", "user.id = data.id").FindAll()
fmt.Println(data)

LEFT JOIN

 t.Fileds("user.id", "data.keywords", "user.username", "user.password").LeftJoin("data", "user.id = data.id").FindAll()
 fmt.Println(data)

RIGHT JOIN

 t.Fileds("user.id", "data.keywords", "user.username", "user.password").RightJoin("data", "user.id = data.id").FindAll()
 fmt.Println(data)

FULL　JOIN

 data := t.Fileds("user.id", "data.keywords", "user.username", "user.password").RightJoin("data", "user.id = data.id").FindAll()
 fmt.Println(data)

自定义sql语句

// Query()方法 是自定义sql语句的

insert类型的数据

n := t.Query("INSERT INTO user (`username`,`password`) VALUES ('xiaoweitest','xiaowei')") //返回最后增长的id

update|delete

 //update
 n := c.Query("update user set username='ceshishenma' where id =17 ")
 fmt.Println(n) //1 返回受影响行数

 //delete
 n := c.Query("delete from user where id=16 ")
 fmt.Println(n) //1 返回受影响行数

select

data := c.Query("select username,password from user")
fmt.Println(data) //返回map[int]map[string]string 结构的所有数据

关闭数据库

c.DbClose()     //关闭数据库

##English Document

The Offcial Website

###Introduction

Gomysql is based on the go - SQL - driver based on orm, this is a lightweight library.It allows the database to add delete very easily.Of course is also testing the development version, will continue to optimize and update!Please attention to us

###Install

go get github.com/widuu/gomysql

###Rely on the package

mysql :github.com/Go-SQL-Driver/MySQL

goini :github.com/widuu/goini

###Using the tutorial

Set the configuration file

[database]
username = mysql username
password = mysql password
hostname = mysql host
charset =  mysql charset
database = database name
port =     mysql port

Initialize the configuration

c, _ := gomysql.SetConfig("./conf/conf.ini") //According to the configuration files, connect to the database

Query data

t := c.SetTable("user")                      //set up the table name
data := t.FindOne()                          //A data query，return map[int]map[string]string format
gomysql.Print(data)                          //Print data information, and return the following screenshots data formats

data := t.Fileds("id", "password", "username").Where("id =12").FindOne() //Fileds Query field,Where where conditions FindOne() query a data
//limit - sql limit,OrderBy - sql OrderBy
data  = c.SetTable("user").Fileds("id", "password", "username").Where("id>1").Limit(1, 5).OrderBy("id Desc").FindAll() 
data  = t.FindAll() //Query all the data, including OrderBy () Limit () the Where () Fileds () set conditions
gomysql.Print(data) //Query data can use the Print () method of friendly printed information

Insert data

 var value = make(map[string]interface{})  //Set the map data is stored, the map [key] the value
 value["password"] = "mima3"    
 value["username"] = "xiaowei"
 value["id"] = 10
 t := c.SetTable("user")                   //Set up to increase the data tables
 t.SetPk("id")                             //Set the primary key on the field name
 i,err := t.Insert(value)                  // Insert data, returns the number increase and error information.Returns the last growth id and error message

Updata data

var value = make(map[string]interface{})
value["password"] = "mima3"
value["username"] = "xiaowei"
n, err := c.SetTable("user").Where("id =5").Update(value)  //Set the table, the condition and modify the content of the article returns affect the number and the error information

Delete data

n, err := c.SetTable("user").Delete("id = 6")   //Article, set the table and data delete, return to influence the number and the error information

Associated operation

INNER JOIN

t := c.SetTable("user")

//Equivalent to a SQL statement below, print out is 
//Select user.id,data.keywords,user.username,user.password from user INNER JOIN data ON user.id = data.id

data := t.Fileds("user.id", "data.keywords", "user.username", "user.password").Join("data", "user.id = data.id").FindAll()
fmt.Println(data)

LEFT JOIN

 t.Fileds("user.id", "data.keywords", "user.username", "user.password").LeftJoin("data", "user.id = data.id").FindAll()
 fmt.Println(data)

RIGHT JOIN

 t.Fileds("user.id", "data.keywords", "user.username", "user.password").RightJoin("data", "user.id = data.id").FindAll()
 fmt.Println(data)

FULL　JOIN

 data := t.Fileds("user.id", "data.keywords", "user.username", "user.password").RightJoin("data", "user.id = data.id").FindAll()
 fmt.Println(data)

自定义sql语句

// Query()function Is a custom SQL statement

insert

n := t.Query("INSERT INTO user (`username`,`password`) VALUES ('xiaoweitest','xiaowei')") //Return the id of the growth

update|delete

 //update
 n := c.Query("update user set username='ceshishenma' where id =17 ")
 fmt.Println(n) //1 Return the affected rows

 //delete
 n := c.Query("delete from user where id=16 ")
 fmt.Println(n) //1 Return the affected rows

select

data := c.Query("select username,password from user")
fmt.Println(data) //return map[int]map[string]string All of the data structure

Close the database

c.DbClose()     //close the database