我在新工作中遇到了一个查询,并想知道为什么前一个人会在where子句中放置括号。似乎只有一个使用between运算符的where子句。
current code being deployed
Select * from t_Employee where (employee_date between '01 May 2016' and '07 May 2016')
Changed Code
Select * from t_Employee where employee_date between '01 May 2016' and '07 May 2016'
有谁知道为什么他们会返回不同的结果? 支架限制是什么?