go struct 里用什么类型来处理 mysql 的 decimal 类型的值

报错 Scan error on column index 4, name "money": converting driver.Value type []uint8 ("0.100") to a int: invalid syntax

type Order struct{
	Id    int     `"db:"id"`
	Money float32 `"db:money"`
}
 
var order Order 
rows, err = DB.Query("select money from order where id =1")
rows.Scan(&order.Money)

google 了半天，尝试了几种 decimal 类型仍然不行,