You can filter YQL results with WHERE clauses, and combine or "mash up" data from multiple services through the use of sub-selects.

您可以通过where子句筛选YQL结果，通过使用子选择来合并或“混搭”来自多个服务的数据。

youdao

OLTP transactions include selects, inserts, updates, and deletes, which normally complete in seconds or sub-seconds.

OLTP事务包括select、insert、update和delete，通常是以秒级或次秒级(sub - second)的速度完成的。

youdao