go使用mysql测试

女爷i 2022-02-15 10:54 139阅读 0赞

添加测试代码如下

package main
    
    import (
        "github.com/jmoiron/sqlx"
        _ "github.com/go-sql-driver/mysql"
        "fmt"
    )
    
    func main() {
        Db,err:=sqlx.Open("mysql","root:123456@tcp(127.0.0.1:3306)/ghnv2_test")
        if err != nil{
            fmt.Println("connect to mysql failed,",err)
            return
        }
        defer Db.Close()
        fmt.Println("connect to mysql success")
    
        //执行sql语句，切记这里的占位符是？
        result,err := Db.Exec("INSERT INTO sysuser_tag(tag_name,shop_id,user_id)VALUES (?,?,?)","运动",12,24)
        if err != nil{
            fmt.Println("insert failed,",err)
        }
        // 通过LastInsertId可以获取插入数据的id
        tagId,err:= result.LastInsertId()
        // 通过RowsAffected可以获取受影响的行数
        rowCount,err:=result.RowsAffected()
        fmt.Println("tag_id:",tagId)
        fmt.Println("rowCount:",rowCount)
    }

需要安装MySQL包  
![在这里插入图片描述][20190424132400612.png]  
执行  
![在这里插入图片描述][20190424132415524.png]

查询select如下

package main
    
    import (
        "github.com/jmoiron/sqlx"
        _ "github.com/go-sql-driver/mysql"
        "fmt"
    )
    
    func main() {
       
        Db,err:=sqlx.Open("mysql","root:123456@tcp(127.0.0.1:3306)/ghnv2_test")
        if err != nil{
            fmt.Println("connect to mysql failed,",err)
            return
        }
        defer Db.Close()
        fmt.Println("connect to mysql success")
    
        //执行查询操作
        rows,err := Db.Query("SELECT tag_name FROM sysuser_tag WHERE tag_id>=7")
        if err != nil{
            fmt.Println("select db failed,err:",err)
            return
        }
        // 这里获取的rows是从数据库查的满足tag_id>=5的所有行的tag_name信息，rows.Next(),用于循环获取所有
        for rows.Next(){
            var s string
            err = rows.Scan(&s)
            if err != nil{
                fmt.Println(err)
                return
            }
            fmt.Println(s)
        }
        rows.Close()
    
    }

结果如下![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2FoYW90YXRh_size_16_color_FFFFFF_t_70]  
测试数据库如下

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2FoYW90YXRh_size_16_color_FFFFFF_t_70 1]

[20190424132400612.png]: /images/20220215/1e9ba42396524d8991877ad9c4249ca9.png
[20190424132415524.png]: /images/20220215/5c52576c6f064ecb843fa46c2ef34348.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2FoYW90YXRh_size_16_color_FFFFFF_t_70]: /images/20220215/968223ed96264d87aacbe24222a52773.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2FoYW90YXRh_size_16_color_FFFFFF_t_70 1]: /images/20220215/e670accb31974ca0b843a02fba33bc2f.png