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1. Table
USE [Company]
GO
/****** Object: Table [dbo].[TestJoin] Script Date: 2019-06-06 7:02:25 PM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[TestJoin](
[Name] [varchar](50) NULL,
[Manager] [varchar](50) NULL
) ON [PRIMARY]
GO
INSERT [dbo].[TestJoin] ([Name], [Manager]) VALUES (N'Bob', NULL)
GO
INSERT [dbo].[TestJoin] ([Name], [Manager]) VALUES (N'Frank', N'Bob')
GO
INSERT [dbo].[TestJoin] ([Name], [Manager]) VALUES (N'Ann', N'Bob')
GO
INSERT [dbo].[TestJoin] ([Name], [Manager]) VALUES (N'Rob', N'Frank')
GO
INSERT [dbo].[TestJoin] ([Name], [Manager]) VALUES (N'Eddy', N'Frank')
GO
INSERT [dbo].[TestJoin] ([Name], [Manager]) VALUES (N'John', N'Rob')
GO
2. Query
Select TestJoin.Name As Boss ,
TestJoin2.Name As Director,
TestJoin3.Name As Manager,
TestJoin4.Name As Nobody
From TestJoin
Left Outer Join TestJoin As TestJoin2 On TestJoin.Name = TestJoin2.Manager
Left Outer Join TestJoin As TestJoin3 On TestJoin2.Name = TestJoin3.Manager
Left Outer Join TestJoin As TestJoin4 On TestJoin3.Name = TestJoin4.Manager
Where TestJoin.Name = 'Bob'
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