update project structure

example/database/gdb/sqlite/sqlite.go

@@ -0,0 +1,47 @@
+package main
+
+//import (
+//    _ "github.com/gogf/gf/internal/thirdparty/github.com/mattn/go-sqlite3"
+//    "github.com/gogf/gf/database/gdb"
+//    "github.com/gogf/gf/frame/g"
+//    "fmt"
+//)
+//
+//func main() {
+//    gdb.SetConfig(gdb.Config{
+//        "default": gdb.ConfigGroup{
+//            gdb.ConfigNode{
+//                Name: "/tmp/my.db",
+//                Type: "sqlite",
+//            },
+//        },
+//    })
+//    db := g.Database()
+//    if db == nil {
+//        panic("db create failed")
+//    }
+//    defer db.Close()
+//
+//    // 创建表
+//    sql := `CREATE TABLE user (
+//        uid  INT PRIMARY KEY NOT NULL,
+//        name VARCHAR(30) NOT NULL
+//    );`
+//    if _, err := db.Exec(sql); err != nil {
+//        fmt.Println(err)
+//    }
+//
+//    // 写入数据
+//    result, err := db.Table("user").Data(g.Map{"uid" : 1, "name" : "john"}).Save()
+//    if err == nil {
+//        fmt.Println(result.RowsAffected())
+//    } else {
+//        fmt.Println(err)
+//    }
+//
+//    // 删除表
+//    sql  = `DROP TABLE user;`
+//    if _, err := db.Exec(sql); err != nil {
+//        fmt.Println(err)
+//    }
+//}