MySQL大于或等于运算符正在忽略其或等于义务

如果连续的价格是 38.03

WHERE price >= '38.02' AND price <= '38.03' (本工程)

WHERE price >= '20' AND price <= '100'

WHERE price >= '38.03' AND price <= '38.03'

WHERE price >= '38.03' AND price <= '100'

WHERE price >= '38.03'

WHERE price <= '38.03' (本工程)

价格以浮动形式存储在数据库中。

所以基本上, <= >= 不是。这有什么原因吗?