(2)聚集函数(Aggregate functions)。有人称为列函数,从表的一列中进行统计返回单值答案。 blog.csdn.net|基于131个网页 3. 合计函数 合计函数(Aggregate functions)MS Access 中的合计函数在 SQL Server 中的合计函数Scalar 函数MS Access 中的 Scalar 函… liulangtiantang02.blog.163.com|基于76个网页 更多释义 例句
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in production code without extensive comments!) - but I like how it manages to avoid all explicit CASE expressions, and all implicit CASE expressions (NULLIF, COALESCE) as well. I'm not sure if it's true, but I suspect that CASE can be a tad slower than plain arithmetical functions. ...