查询过滤器确实在我的 SSRS 报告中返回过滤值

Question

我正在创建 SSRS 报告，但以下查询中提到的此过滤器 starttime between @StartDateTime and @EndDateTime and UID like @uIdCondition and Type in (@Type) 不返回任何过滤值。有人可以指导我做错了什么吗？

此外，我不确定如何将所有内容合二为一，以便我的所有过滤器都能正常工作。目前，拳头if else 工作正常，但问题出在以下查询中。

这是表格脚本

CREATE TABLE [dbo].[EmpLog](
        [Id] [int] NOT NULL,
       [LoggedTime] [datetime] NULL,        
        [StartTime] [datetime] NULL,
        [Name] [nvarchar](128) NULL,
        [Type] [nvarchar](128) NULL,
        [UID] [nvarchar](64) NULL,
     CONSTRAINT [PK_EmpLog] PRIMARY KEY CLUSTERED 
    (
        [Id] ASC
    )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
    ) ON [PRIMARY]
    GO

插入语句

INSERT INTO EmpLog (Id, LoggedTime, StartTime, Name,Type,UID) VALUES (1,'2021-02-20 01:15:44.647','2021-02-20 01:15:44.647', 'abc', 'cde','YY');
INSERT INTO EmpLog (Id, LoggedTime, StartTime, Name,Type,UID) VALUES (2,'2021-02-21 01:15:44.647','2021-02-21 01:15:44.647', 'mmm', 'nnn','gg');
INSERT INTO EmpLog (Id, LoggedTime, StartTime, Name,Type,UID) VALUES (3,'2021-02-22 01:15:44.647','2021-02-22 01:15:44.647', 'hhh', 'kkk','ll');

这个脚本如果像这样单独放置就可以工作

declare @empNameCondition varchar(50)
if @empName = '' or @empName is null or len(@empName) = 0
Begin 
  select ID, LoggedTime, startTime,Type, Name, uID
  from [EmpLog]
  order by ID, loggedTime, UId, Name,Type
End

else

Begin 
  set @empNameCondition = '%' + @empName + '%'

  select ID, LoggedTime, startTime,Type, Name, uID
  from [EmpLog]
  where Name like @empNameCondition
  order by ID, loggedTime, UId, Name,Type

end
 

如果我单独运行第二个脚本，它也会运行：

declare @UIdcondition varchar(50)
    begin
      if @UId = '' or @UId is null or len(@UId) = 0
        set @UIdCondition = '[a-z0-9]%'
      else 
        set @UIdCondition = @UId
    
      select ID, LoggedTime, startTime,Type, Name, uID
      from [EmpLog] where 
        starttime between ''2021-02-20 01:15:44.647' and '2021-02-20 01:15:44.647'
        and UID like @uIdCondition
        and Type in (@Type)
    
    end

但是当我将两个脚本组合在一起时，过滤器的最后一部分不会返回任何内容。

  DECLARE @empName varchar(50)
  DECLARE @UId VARCHAR(50)
  DECLARE @StartDateTime VARCHAR(50)
  DECLARE @EndDateTime VARCHAR(50)
 declare @empNameCondition varchar(50)
 set @uid='YY'
 set @type ='cde'
if @empName = '' or @empName is null or len(@empName) = 0
Begin 
  select ID, LoggedTime, startTime,Type, Name, uID
  from [EmpLog]
  order by ID, loggedTime, UId, Name,Type
End

else

Begin 
  set @empNameCondition = '%' + @empName + '%'

  select ID, LoggedTime, startTime,Type, Name, uID
  from [EmpLog]
  where Name like @empNameCondition
  order by ID, loggedTime, UId, Name,Type

end
 
declare @UIdcondition varchar(50)
  
begin
  if @UId = '' or @UId is null or len(@UId) = 0
    set @UIdcondition = '[a-z0-9]%'
  else 
    set @UIdcondition = @UId

  select ID, LoggedTime, startTime,Type, Name, uID
  from [EmpLog] where 
    starttime between ''2021-02-20 01:15:44.647' and '2021-02-20 01:15:44.647'
    and UID like @uIdCondition
    and Type in (@Type)

end

Answer 1

执行以下查询以获得您想要的结果

DECLARE @empName varchar(50)
DECLARE @UId VARCHAR(50)
DECLARE @StartDateTime VARCHAR(50)
DECLARE @EndDateTime VARCHAR(50)

SET @StartDateTime = '2021-02-20 01:15:44.647'

  SELECT ID, LoggedTime, startTime,Type, Name, uID
  FROM [EmpLog] 
  WHERE
  Name LIKE CASE WHEN ISNULL(@empName,'') <> '' THEN '%'+@empName+'%' ELSE Name END
  AND UID LIKE CASE WHEN ISNULL(@UId,'') <> '' THEN '%'+@UId+'%' ELSE UID END
 -- AND starttime between @StartDateTime and @EndDateTime  --this condition is not clear in question as it should be check for all or only when @starttime parameter is passed
 AND  StartTime BETWEEN CASE WHEN ISNULL(@StartDateTime,'') <> '' THEN @StartDateTime ELSE '1900-01-01' END AND CASE WHEN ISNULL(@EndDateTime,'') <> '' THEN @EndDateTime ELSE '2099-12-31' END