在SQL语句中使用最大和给定日期获取错误 [英] Getting Error using Max and Given Date in SQL Statement

问题描述

我要查询日期和日期之间的数据.

Bur，使用以下查询时出现错误.

我想从日期给出日期和最大日期"中获取结果，并且
在给定日期和最大日期"之间的日期

如何编写查询或形成查询...?

查看我的示例查询
-------------------

I want query between from date and to date.

Bur,i am getting error when i use below query.

I want to get result from date beteen "Given date and Max Date" and
To Date between "Given date and Max Date"

How to write Query or form the query...?

See my sample query
-------------------

select * FROM (
  SELECT datefrom AS datefrm, *
  FROM LM_TblLeaveapply
  WHERE datefrom between '2011-10-24' and (select Max(datefrom) from LM_TblLeaveapply)
) t1
FULL OUTER JOIN
 (
 SELECT dateto AS datto, *
  FROM LM_TblLeaveapply
  where dateto between '2011-10-24' and (select Max(dateto) from LM_TblLeaveapply)
) t2

样本数据:

EmpId DateFrom DateTo
101 20-10-2010 20-10-2010
101 21-10-2010 21-10-2010
101 22-10-2010 22-10-2010
101 23-10-2010 23-10-2010
24-10-2011 24-10-2011
25-10-2011 25-10-2011
23-05-2012 23-05-2012

sample data :

EmpId DateFrom DateTo
101 20-10-2010 20-10-2010
101 21-10-2010 21-10-2010
101 22-10-2010 22-10-2010
101 23-10-2010 23-10-2010
24-10-2011 24-10-2011
25-10-2011 25-10-2011
23-05-2012 23-05-2012

推荐答案

查询中的错误是

您正在使用联接查询，因此您必须在满足条件的情况下输入t1和t2的公共键

例子.

The Error in Query is

You are making use of a join query so u have to make a common key of t1 and t2 in on condition

example.

select t1.*,t2.* FROM (
  SELECT datefrom AS datefrm, *
  FROM LM_TblLeaveapply
  WHERE datefrom between '2010-10-19' and (select Max(datefrom) from LM_TblLeaveapply)
) t1
FULL OUTER JOIN
 (
 SELECT dateto AS datto, *
  FROM LM_TblLeaveapply
  where dateto between '2010-10-19' and (select Max(dateto) from LM_TblLeaveapply)
) t2 on t1.empid = t2.empid

这是要运行此查询.但仍然不知道结果如何.

This is to run this query. but still dont know what u want as result.

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