Druid+Sharding JDBC，Druid监控无法查看分表情况下语句用了哪个表怎么办？

Question

项目中实用了Druid+Sharding JDBC
对某个表实施了分表，product_0, product_1,product_2...
但是在Druid监控下只能看到逻辑表名product，无法看到实际的物理表名
且fields项下有UNKNOWN出现，如下，本应该是product
怎么回事？

[product.top_category_id, category.id, product.id, product_image.product_id, UNKNOWN.prod_name, UNKNOWN.price, UNKNOWN.stock, UNKNOWN.sales, UNKNOWN.weight, UNKNOWN.sale_status, UNKNOWN.description, category.name, category.sort, product_image.id, product_image.img_url]