"no" 关键字在 Sql Server 2012 中的用途是什么?

What is the purpose of "no" Keyword in Sql Server 2012?

我知道 "not" 关键字,但它对我来说是新的。请给我一个用法和例子。

它只是保留以防某些引擎可能使用它,以确保与支持核心 SQL 语法的驱动程序兼容:

"The following words are reserved for use in ODBC function calls. These words do not constrain the minimum SQL grammar; however, to ensure compatibility with drivers that support the core SQL grammar, applications should avoid using these keywords."

https://docs.microsoft.com/en-us/sql/t-sql/language-elements/reserved-keywords-transact-sql?view=sql-server-2017&viewFallbackFrom=sql-server-2012

它不仅被微软保留。

https://firebirdsql.org/en/iso-9075-sql-standard-keywords-reserved-words/