📜  sql代码示例中的聚合函数

📅  最后修改于: 2022-03-11 15:04:53.846000             🧑  作者: Mango

代码示例4
• Single Row Functions:(Lower, Upper, Substr, Length)
function that will run for each row and 
return value for each row.

Multiple Row Functions (Group functions, Aggregate functions):
(Count, MIN , MAX, AVG, SUM)
will run for multiple rows and return a single value