启用了 SQL passthrough 后，当从应用程序执行一个 SQL 查询时，solidDB 试着在前端 solidDB 数据库中搜索相关数据表。

After you enable SQL passthrough, when an SQL query is executed from the application, solidDB tries to search the referred tables in the front-end solidDB database.

youdao

在列表中数据项的数量会被冗余地存储在这，以便无需查询整个AllUserData数据表（所有的SharePoint列表项目都保存在这里）就可获得这个信息。

The number of items in the list is stored there redundantly in order to get this information without the need to query the entire AllUserData table where all SharePoint list items are stored.

youdao

在这种情况下，SharePoint只用在内容数据库中查询Lists数据表的单个记录。

In this case, SharePoint only needs to query a single record from the Lists table in the content database.

youdao