在数据库领域中，全文检索解决了 like '%关键字%' 查询的性能瓶颈问题。传统的关系型数据库使用 like 进行模糊查询时，由于无法利用索引，需要对每行数据进行全表扫描，当数据量达到百万级别时，查询性能急剧下降。而全文检索通过建立倒排索引等机制，实现了亚秒级的检索响应。

There are a couple of flaws in the design of this semantic model that either individually or combined cause that warning message to appear. Remember that it only appears when Copilot thinks it needs ...