Env migrate

Use github.com/rubenv/sql-migrate and env, auto run migrate.

启用 sql-migrate

func main(){
  env_migrate.Auto(db,dbName) // db is database/sql *sql.DB, dbName is dataBaseName like 'mysql'
}

启动服务/迁移数据库

migrate 会读取 migrations/*.sql 进行迁移

启动并执行所有迁移

up_migrate=all go run main.go

执行回滚，1 次, down_migrate 结束会自动退出

down_migrate=1 go run main.go

执行跳过，2 次, skip_migrate 结束会自动退出

skip_migrate=2 go run main.go

使用其他 migrations 路径

up_migrate=all dir_migrate=sql/migrations go run main.go