Question

我正在使用SQL Server 2008.我的表结构类似于

SNo  From_date   To_date     EmpId
----------------------------------
1    6/6/2012   2/6/2013     1
2    3/6/2013   NULL         1
3    6/6/2012   5/12/2012    2

当我提供特定的monthno和year时，它必须自动返回适当的行，其中月份和年份在给定的日期范围内。我尝试使用以下查询，但它不适用于明年检查。任何1可以帮助我解决这个问题吗？

  declare @monthno int;
  declare @yearno int;
  set @monthno=7;
  set @yearno=2012;
  select * from YearMonthTable
  where (@monthno>= MONTH(From_Date) and @yearno >= YEAR(From_Date)) 
  and ((@monthno<= MONTH(To_date) and @yearno <=YEAR(To_date)) or To_date is null)
  and EmpId=1

Answer 1

为此执行单独的查询，它正在工作..

我的尝试不是在where子句中使用多个条件语句。

Answer 2

  declare @monthno int;
  declare @yearno int;
  set @monthno=7;
  set @yearno=2012;
  select * from YearMonthTable
  where (@monthno>= MONTH(From_Date) and @yearno >= YEAR(From_Date)) 
  and ( (@yearno < YEAR(To_date)) or (@monthno <= MONTH(To_date) and  earno =YEAR(To_date))  or To_date is null)  and EmpId=1

SQL Server查询以检查给定日期范围内的给定月份和年份是否存在

2 个答案: