提要聚合器是一个包装器组件,用来包装提要阅读器组件以实现本文的主要目标:创建一个可定制的rss提要聚合函数。
Feed aggregator is a wrapper component that wraps the feed reader component to meet the main objective of this article: to create a customizable RSS feed aggregation function.
双酚a一般用于食品和饮料包装,其分子作为复合聚合物的一部分,通常是固定的。
BPA is commonly used in food and drink packaging, where the molecule is usually locked in as part of a complex polymer.
因此,在使用标准的 ODBC 包装器的情况下,Federation Server 只能将少数 SQL 操作下推到远程数据源,大多数谓词的计算、聚合、排序和连接仍然是在本地完成。
Thus, Federation Server can push down only a few SQL operations through the standard ODBC wrapper to the remote source and executes most predicate evaluations, aggregations, sorts and joins locally.
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