Question

We have a application where users are entering their time efforts .We have two tables, Production table for entering all production tasks and NonProduction for entering all non production related tasks in the application.We also have a UserInfo table where all the user information is stored like his eCode, Name, Designation,RoleID,ImmediateSupervisor ECode to whom the user is reporting etc.
We are trying to make a sql query in such manner so that any users whose roleid is greater then 1 can drill down and extract the Production and NonProduction information of the users reporting under him but the condition is that the extracted report is of RoleID 1 only.
For example, A Manager RoleID is 4 ,so firstly he drill down and find all the users reporting to him (This info is in ImmediateSupervisor column on UserInfo table)i.e RoleID 3 or RoleID 4, then again we drill down to these Users and extract information who are reporting to them and continue until we drill down up to ROleID 1 and once we drill down to that level, we extract respective users Production and NonProduction details and display in the Report.

Below is the table structure query in Create Table format;

Production Table

CREATE TABLE [dbo].[Production]
(
    [ProductionTimeEntryID]  [int] IDENTITY(100, 1) NOT NULL,
    [CalendarDate]           [datetime] NOT NULL,
    [UserID]                 [int] NOT NULL,
    [NatureOfWorkID]         [int] NOT NULL,
    [RegionProjectID]        [int] NOT NULL,
    [CountyID]               [int] NOT NULL,
    [WorkTypeID]             [int] NOT NULL,
    [TaskID]                 [int] NOT NULL,
    [VolumeProcessed]        [int] NOT NULL,
    [NosOfError]             [int] NULL,
    [NosOfVolumeAudited]     [int] NULL,
    [TimeSpent]              [varchar](25) NULL,
    [Comment]                [varchar](250) NULL,
    [IsTaskCompleted]        [int] NOT NULL,
    [isCurrentDayTask]       [bit] NOT NULL,
    [SupervisorECode]        [nvarchar](50) NULL,
    CONSTRAINT [PK_Production] PRIMARY KEY CLUSTERED([ProductionTimeEntryID] 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

SET ANSI_PADDING OFF
    GO

    ALTER TABLE [dbo].[Production]  WITH NOCHECK ADD  CONSTRAINT 
[FK_Production_County] FOREIGN KEY([CountyID])
    REFERENCES [dbo].[County] ([CountyID])
    GO

    ALTER TABLE [dbo].[Production] CHECK CONSTRAINT [FK_Production_County]
    GO

    ALTER TABLE [dbo].[Production]  WITH NOCHECK ADD  CONSTRAINT 
[FK_Production_NatureOfWork] FOREIGN KEY([NatureOfWorkID])
    REFERENCES [dbo].[NatureOfWork] ([NatureOfWorkID])
    ON 
UPDATE CASCADE
       ON

DELETE CASCADE
    GO

    ALTER TABLE [dbo].[Production] CHECK CONSTRAINT [FK_Production_NatureOfWork]
    GO

    ALTER TABLE [dbo].[Production]  WITH NOCHECK ADD  CONSTRAINT 
[FK_Production_RegionAndProjectInfo] FOREIGN KEY([RegionProjectID])
    REFERENCES [dbo].[RegionAndProjectInfo] ([RegionProjectID])
    GO

    ALTER TABLE [dbo].[Production] CHECK CONSTRAINT 
[FK_Production_RegionAndProjectInfo]
    GO

    ALTER TABLE [dbo].[Production]  WITH CHECK ADD  CONSTRAINT 
[FK_Production_Task] FOREIGN KEY([TaskID])
    REFERENCES [dbo].[Task] ([TaskID])
    GO

    ALTER TABLE [dbo].[Production] CHECK CONSTRAINT [FK_Production_Task]
    GO

    ALTER TABLE [dbo].[Production]  WITH CHECK ADD  CONSTRAINT 
[FK_Production_USERINFO] FOREIGN KEY([UserID])
    REFERENCES [dbo].[USERINFO] ([UserID])
    ON 
UPDATE CASCADE
       ON

DELETE CASCADE
    GO

    ALTER TABLE [dbo].[Production] CHECK CONSTRAINT [FK_Production_USERINFO]
    GO

    ALTER TABLE [dbo].[Production]  WITH CHECK ADD  CONSTRAINT 
[FK_Production_WorkType] FOREIGN KEY([WorkTypeID])
    REFERENCES [dbo].[WorkType] ([WorkTypeID])
    ON 
UPDATE CASCADE
       ON

DELETE CASCADE
    GO

    ALTER TABLE [dbo].[Production] CHECK CONSTRAINT [FK_Production_WorkType]
    GO

    ALTER TABLE [dbo].[Production] ADD  DEFAULT((0)) FOR [IsTaskCompleted]
    GO

    ALTER TABLE [dbo].[Production] ADD  DEFAULT((0)) FOR [isCurrentDayTask]
    GO

UserInfo Table:

CREATE TABLE [dbo].[USERINFO](
[UserID] [int] IDENTITY(1,1) NOT NULL,
[UserECode] [nvarchar](50) NOT NULL,
[UserName] [nvarchar](250) NOT NULL,
[CCCode] [nvarchar](50) NULL,
[CCName] [nvarchar](50) NULL,
[Password] [varchar](50) NULL,
[IsFlagEnabled] [bit] NULL,
[IsFirstTimeUserLoggedIn] [bit] NULL,
[EmailAddress] [nvarchar](250) NULL,
[Designation] [varchar](50) NULL,
[ShiftStartTime] [varchar](8) NULL,
[ShiftEndTime] [varchar](8) NULL,
[WeekendShiftStartTime] [varchar](8) NULL,
[WeekendShiftEndTime] [varchar](8) NULL,
[RoleID] [int] NULL,
[ShiftEndFlagStatus] [int] NOT NULL,
[ShiftStartTimeWithTimeStamp] [datetime] NULL,
[ShiftEndTimeWithTimeStamp] [datetime] NULL,
[LoggedInDateTime] [datetime] NULL,
[FirstLoggedInOnthedayflag] [int] NOT NULL,
[ImmediateSupervisor] [nvarchar](50) NULL,
 CONSTRAINT [PK_USER] PRIMARY KEY CLUSTERED 
(
    [UserID] 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
SET ANSI_PADDING OFF
GO
ALTER TABLE [dbo].[USERINFO] ADD  DEFAULT ((1)) FOR [RoleID]
GO
ALTER TABLE [dbo].[USERINFO] ADD  DEFAULT ((1)) FOR [ShiftEndFlagStatus]
GO
ALTER TABLE [dbo].[USERINFO] ADD  DEFAULT ((1)) FOR [FirstLoggedInOnthedayflag]
GO

How to make such query or type of query to incorporate same in my application?

Answer 1

You have a table with a tree structure, the standard way to extract this is to use a recursive cte, something like this:

;with UserTree as
(
    select UserECode, UserID
      from USERINFO
     where UserID = <the managers user-id>
    union all
    select UserECode, UserID
      from UserTree parent
           inner join USERINFO child
                   on child.ImmediateSupervisor = parent.UserECode
)
select * --change this to the specific columns that you need
  from UserTree ut
       inner join Production p
               on p.UserID = ut.UserID
 where RoleId = 1

Please note that I haven’t managed to test this code, but I’m sure you can fix any minor issues yourself.

More information about recursive cte:s.

I also couldn’t help but notice a couple of potential issues with your tree datastructure: ImmediateSupervisor appears to reference UserECode, and I can see two problems in the table structure that you have posted:

1. No foreign key from ImmediateSupervisor to UserECode. This could result in users that have non-existing supervisors.
2. UserECode is not unique. This could result in multiple users with the same code, which means multiple supervisors per user, and that will really screw up the recursive cte query.

I don’t have the whole picture here, but with what I have I would change the ImmediateSupervisor-column to refer to the PK UserId instead.