SQL SELECT，CASE，BETWEEN INTO语句

Question

我有一个SQL查询比较2个表来检查登录时间和日程表是否关闭，以便用int值填充第三个表。我得到它的工作，但我试图添加其他变化到选择命令。

这里是工作的代码：

DECLARE @sqlSelect varchar(max) 
SET @sqlSelect = 'SELECT loginlogout.[Agent Name], case when loginlogout.[Login Time] = Schedules$.StartTime then 0 else 1 end as LoginInc into Integers FROM loginlogout JOIN Schedules$ on loginlogout.[Agent Name] = Schedules$.AgentName' 

EXEC(@sqlSelect) 
GO 

什么我想补充的是这样的：

DECLARE @six varchar(max) 
DECLARE @sixo varchar(max) 
DECLARE @sixnerdy varchar(max) 
DECLARE @sqlSelect varchar(max) 
SET @six = '[6:00AM]' 
SET @sixo = '[6:05AM]' 
SET @sixnerdy = '[6:30AM]' 
SET @sqlSelect = 'SELECT loginlogout.[Agent Name], case when loginlogout.[Login Time] = Schedules$.StartTime then 0 when [Login Time] BETWEEN '+ @sixo +' and '+ @sixnerdy +' then 1 else 1 end as LoginInc into Integers FROM loginlogout JOIN Schedules$ on loginlogout.[Agent Name] = Schedules$.AgentName' 

EXEC(@sqlSelect) 
GO 

当运行这个查询，我得到错误味精207无效列名。因此我尝试过：

SET @sqlSelect = 'SELECT loginlogout.[Agent Name], case when loginlogout.[Login Time] = Schedules$.StartTime then 0 when [Login Time] BETWEEN '+ @sixo +' and '+ @sixnerdy +' then 1 else 1 end as LoginInc into Integers' 

删除FROM语句。这表示该命令运行，但整数表永远不会创建。这可以在1个SQL命令中完成吗？此外，我还需要添加约4个以上的BETWEEN查询来加强此命令。

Answer 1

由于时间未包含在单引号中，初看一眼就会质疑没有问题。有这样的工作吗？

DECLARE @six varchar(max) 
DECLARE @sixo varchar(max) 
DECLARE @sixnerdy varchar(max) 
DECLARE @sqlSelect varchar(max) 
SET @six = '''6:00AM''' 
SET @sixo = '''6:05AM''' 
SET @sixnerdy = '''6:30AM''' 
SET @sqlSelect = 'SELECT loginlogout.[Agent Name], case when loginlogout.[Login Time] = Schedules$.StartTime then 0 when [Login Time] BETWEEN '+ @sixo +' and '+ @sixnerdy +' then 1 else 1 end as LoginInc into Integers FROM loginlogout JOIN Schedules$ on loginlogout.[Agent Name] = Schedules$.AgentName' 

EXEC(@sqlSelect) 
GO 

虽然这一切似乎仍然有点笨拙。是否有理由EXEC一个SQL字符串vs只是按原样执行SELECT声明？