从两个表查询

Question

I have a query from two tables ...

The first table in which the goods are in the form of tree accounts ....

The second table in which the sale is linked to the first table.

For example, now I have the first table.

Question A sort query is required ..

I get the cars for their condition ... electronics for their condition

Of Table II.

With attachments, I want to create a query.

Database Script :

USE [To_Test]
GO
/****** Object:  Table [dbo].[Items]    Script Date: 11/10/1438 05:54:35 م ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[Items](
    [Id_ItemS] [int] NOT NULL,
    [Name_ar] [nvarchar](50) NULL,
    [Number_Id] [int] NULL,
    [Basic] [bit] NULL,
 CONSTRAINT [PK_Items] PRIMARY KEY CLUSTERED 
(
    [Id_ItemS] 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_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[Sell_items](
    [Id_Sell] [int] IDENTITY(1,1) NOT NULL,
    [Id_items] [int] NULL,
    [price] [money] NULL,
 CONSTRAINT [PK_Sell_items] PRIMARY KEY CLUSTERED 
(
    [Id_Sell] 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
INSERT [dbo].[Items] ([Id_ItemS], [Name_ar], [Number_Id], [Basic]) VALUES (1, N'Cars', NULL, 1)
INSERT [dbo].[Items] ([Id_ItemS], [Name_ar], [Number_Id], [Basic]) VALUES (2, N'electronics', NULL, 1)
INSERT [dbo].[Items] ([Id_ItemS], [Name_ar], [Number_Id], [Basic]) VALUES (3, N'Toyota', 1, 1)
INSERT [dbo].[Items] ([Id_ItemS], [Name_ar], [Number_Id], [Basic]) VALUES (4, N'Nissan', 1, 1)
INSERT [dbo].[Items] ([Id_ItemS], [Name_ar], [Number_Id], [Basic]) VALUES (5, N'Camry', 3, 1)
INSERT [dbo].[Items] ([Id_ItemS], [Name_ar], [Number_Id], [Basic]) VALUES (6, N'2015', 5, 0)
INSERT [dbo].[Items] ([Id_ItemS], [Name_ar], [Number_Id], [Basic]) VALUES (7, N'2016', 5, 0)
INSERT [dbo].[Items] ([Id_ItemS], [Name_ar], [Number_Id], [Basic]) VALUES (8, N'2017', 5, 0)
INSERT [dbo].[Items] ([Id_ItemS], [Name_ar], [Number_Id], [Basic]) VALUES (9, N'TV', 2, 1)
INSERT [dbo].[Items] ([Id_ItemS], [Name_ar], [Number_Id], [Basic]) VALUES (10, N'LG', 9, 0)
INSERT [dbo].[Items] ([Id_ItemS], [Name_ar], [Number_Id], [Basic]) VALUES (11, N'Samsung', 9, 0)
SET IDENTITY_INSERT [dbo].[Sell_items] ON 

INSERT [dbo].[Sell_items] ([Id_Sell], [Id_items], [price]) VALUES (1, 11, 2500.0000)
INSERT [dbo].[Sell_items] ([Id_Sell], [Id_items], [price]) VALUES (2, 10, 2300.0000)
INSERT [dbo].[Sell_items] ([Id_Sell], [Id_items], [price]) VALUES (3, 6, 20000.0000)
INSERT [dbo].[Sell_items] ([Id_Sell], [Id_items], [price]) VALUES (4, 7, 270000.0000)
SET IDENTITY_INSERT [dbo].[Sell_items] OFF
ALTER TABLE [dbo].[Items]  WITH CHECK ADD  CONSTRAINT [FK_Items_Items1] FOREIGN KEY([Number_Id])
REFERENCES [dbo].[Items] ([Id_ItemS])
GO
ALTER TABLE [dbo].[Items] CHECK CONSTRAINT [FK_Items_Items1]
GO
ALTER TABLE [dbo].[Sell_items]  WITH CHECK ADD  CONSTRAINT [FK_Sell_items_Items] FOREIGN KEY([Id_items])
REFERENCES [dbo].[Items] ([Id_ItemS])
GO
ALTER TABLE [dbo].[Sell_items] CHECK CONSTRAINT [FK_Sell_items_Items]
GO

view

WITH Recursive_CTE AS (
SELECT        Items.Id_ItemS, Items.Name_ar, Items.Number_Id, 1 AS RecursionLevel, CAST(Items.Id_ItemS AS varchar(100)) AS Hierarchy, Sell_items.Id_Sell
FROM            Items INNER JOIN
                         Sell_items ON Items.Id_ItemS = Sell_items.Id_items
WHERE        (Items.Id_ItemS = 1)
 UNION ALL
SELECT        Items.Id_ItemS, Items.Name_ar, Items.Number_Id, 1 AS RecursionLevel, CAST(Hierarchy + ':' + CAST(Items.Id_ItemS AS varchar(100)) AS varchar(100)) AS Hierarchy, Sell_items.Id_Sell
FROM            Recursive_CTE AS parent INNER JOIN
                         Items ON parent.Id_items = Items.Number_Id INNER JOIN
                         Sell_items ON Items.Id_ItemS = Sell_items.Id_items )
SELECT * FROM Recursive_CTE ORDER BY Hierarchy

but The result is null

I wish to modify the query ?

The desired result enter image description here

Answer 1

I see it as data issue. You don't have any records which satisfy your query.

I don't see any items.Id_ItemS = 1 after Inner join on two tables - Items, Sell_items

  SELECT 
       Items.Id_ItemS, 
       Items.Name_ar, 
       Items.Number_Id, 
       1 AS RecursionLevel, 
       CAST(Items.Id_ItemS AS varchar(100)) AS Hierarchy,
       Sell_items.Id_Sell 
  FROM  Items INNER JOIN Sell_items ON Items.Id_ItemS = Sell_items.Id_items
       WHERE (Items.Id_ItemS = 1)

If you remove the where conditions (Items.Id_ItemS = 1) you will get results.

Hope this helps you!

Answer 2

Add the following 3 inserts to Sell_items and you'll get results...

INSERT dbo.Sell_items (Id_Sell, Id_items, price) VALUES (5, 1, 270000.0000);
INSERT dbo.Sell_items (Id_Sell, Id_items, price) VALUES (6, 3, 280000.0000);
INSERT dbo.Sell_items (Id_Sell, Id_items, price) VALUES (7, 4, 290000.0000);

Also note that you aren't incriminating your RecursionLevel column. You'll want to add 1 to the previous value...

parent.RecursionLevel + 1 AS RecursionLevel, 

Answer 3

I came to answer the question, very excellent

WITH Recursive_CTE (Id_ItemS,Name_ar,Number_Id,RecursionLevel,Hierarchy) AS (
SELECT        Items.Id_ItemS, Items.Name_ar, Items.Number_Id, 1 AS RecursionLevel, CAST(Items.Id_ItemS AS varchar(100)) AS Hierarchy
FROM            Items
where (Id_ItemS=1)
 UNION ALL
SELECT        Items.Id_ItemS, Items.Name_ar, Items.Number_Id, RecursionLevel+1 AS RecursionLevel, CAST(Hierarchy + ':' + CAST(Items.Id_ItemS AS varchar(100)) AS varchar(100)) AS Hierarchyss
FROM            Recursive_CTE AS parent INNER JOIN
                         Items ON parent.Id_items = Items.Number_Id)
SELECT        Id_ItemS, Name_ar, Number_Id, RecursionLevel, Hierarchy, Sell_items.Id_Sell, Sell_items.price, Sell_items.Id_items2
FROM           Recursive_CTE  INNER JOIN
                      Sell_items    ON Sell_items.Id_items2 = Recursive_CTE.Id_items
ORDER BY Hierarchy

---

The result

Id_ItemS    Name_ar Number_Id   RecursionLevel  Hierarchy   Id_Sell price   Id_items2
6   2015    5   4   1:3:5:6 3   20000.00    6
7   2016    5   4   1:3:5:7 4   270000.00   7
7   2016    5   4   1:3:5:7 5   998877.00   7