扫描表 meaning in Chinese
scan table
Examples
- However , if no indexes are available , the query optimizer must use a table scan
但如果没有索引,则查询优化器必须扫描表。 - A table scan generates many disk i o operations and can be resource intensive
扫描表会有许多磁盘i / o操作,并占用大量资源。 - The method may be a table scan , or may be scanning one or more indexes if they exist
可能采用的方法包括扫描表和扫描一个或多个索引(如果有) 。 - If you build the index immediately , the table space is scanned , which can take a considerable amount of time
如果立即建立索引,则需要扫描表空间,这样要花费比较多的时间。 - For queries that scan part or all of the indexes of a table , this kind of fragmentation can cause additional page reads
对于扫描表的部分或全部索引的查询,这种碎片会导致附加的页读取。