range scanning meaning in Chinese
按距扫描
距离扫描
Examples
- Reverse key index cannot be used for range scan
回复：建了反向索引，为什么系统不使用索引了？ - Indicates serializable range scan
指示可串行范围扫描。 - Close range scanning
近距离扫描 - This occurs rarely and only when a query plan has multiple range scans
这种情况发生的几率很小，仅当查询计划具有多次范围扫描时才会发生。 - If order by is required , eliminate the column that participates in the multiple range scans t . a in the example above from the order by clause
如果需要order by ，则通过order by子句清除参与多次范围扫描的列（如上面示例中的t . a ） 。