There are spaces above, but it is all cantilevered with no columns.
上面有空间,但均是悬挑的无柱结构。
If no columns satisfy the requirement for a default partitioning key, the table is created without one, which means the table cannot span more than one partition.
如果没有列能满足作为默认分区键的条件,则表在创建后就没有分区键,也就意味着这个表不能横跨一个以上的分区。
Part of the reason that the buildings collapsed as they did is because aside from the floor reinforcements, there were no columns holding the building up from the inside.
建筑倒塌的部分原因可以归结于除了楼板加固之外,在内部没有钢柱支撑起建筑。
应用推荐