Question

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Parent Child table record – Building SQL query

Here is my table and data of these tables

Table name: Code

CID     Code
1       abc
2       def     
3       xyz

Table Name : Details

ID  Date        Value1  CID
1   1/1/2009    12      1       
2   1/1/2009    25      2
3   1/1/2009    18      3
4   1/2/2009    36      1
5   1/2/2009    45      2
6   1/3/2009    19      1

Resultant Table:

Date        Value1  CID     Code
1/1/2009    12      1       abc
1/1/2009    25      2       def
1/1/2009    18      3       xyz
1/2/2009    36      1       abc
1/2/2009    45      2       def
1/2/2009    Null    3       xyz
1/3/2009    19      1       abc
1/3/2009    NUll    2       def
1/3/2009    Null    3       xyz

I need to get all record from the code table and against each code I have to get all the rows from the details table, if some code have value their need value and if not then Null

Thanks

Answer 1

@Muhammad Akhtar, Have a look at this. Let me know if it helps

DECLARE @Code TABLE(
        CID INT,
        Code VARCHAR(10)
)

INSERT INTO @Code SELECT 1,'abc' 
INSERT INTO @Code SELECT 2,'def'      
INSERT INTO @Code SELECT 3,'xyz'

DECLARE @Details TABLE(
        ID  INT,
        Date DATETIME,
        Value1 INT,
        CID INT
)

INSERT INTO @Details SELECT 1,'1/1/2009',12,1        
INSERT INTO @Details SELECT 2,'1/1/2009',25,2 
INSERT INTO @Details SELECT 3,'1/1/2009',18,3 
INSERT INTO @Details SELECT 4,'1/2/2009',36,1 
INSERT INTO @Details SELECT 5,'1/2/2009',45,2 
INSERT INTO @Details SELECT 6,'1/3/2009',19,1 

SELECT  v.Date,
        d.Value1,
        v.CID,
        v.Code
FROM    (
            SELECT  DISTINCT
                    d.Date,
                    c.CID,
                    c.Code
            FROM    @Details d, @Code c
        ) v LEFT JOIN 
        @Details d  ON  v.CID = d.CID 
                    AND v.Date = d.Date