修改表 [计] list of modifications
- 它还演示了如何修改表的属性。
It also demonstrates how to change properties of the table. - 可以添加和删除索引;通过删除、改名或添加列来修改表;甚至在必要的时候借助于 SQL。
You can add and drop indexes; alter tables by dropping, renaming, or adding columns; and even drop down into SQL as necessary. - 要查看给定时间范围内执行了插入或更新操作的行,需要创建或修改表以包含一个行修改时间戳列。
To see rows that have been inserted or updated in a given time range, create or alter the table to contain a row change timestamp column.