SQL query with return columns based on grouping

Question

I have this select as follows:

SELECT SUBSTRING(Col1, 1, 3)          AS \'Series\',
       b.Col2,
       CAST(c.Price * c.Qty AS MONEY) AS Total
FROM   tabl         


        

Answer 1

Please try the following codes. You have to use PIVOT query.

create table TableName (Series varchar(20),col2 varchar(10), price decimal(8,2))

insert into TableName values ('105','C50',30)
insert into TableName values ('105','C50',10)

insert into TableName values ('105','C53',20)
insert into TableName values ('105','C53',30)


SELECT Series,
       [C50],
       [C53]
FROM   (SELECT Series,
               col2,
               price
        FROM   TableName) AS SourceTable 
                   PIVOT ( SUM(price) FOR col2 IN ([C50],
                                                   [C53])
       ) AS PivotTable;  

Answer 2

For potential null value for col2, please try the following code.

Note: you may need to adjust @PIV_COL size depend on how many distinct records of col2. I used 'NO_VAL' for potential NULL value of col2.

insert into TableName  values ('105',NULL,100)


DECLARE @PIV_COL VARCHAR(100)

SELECT @PIV_COL = STUFF(
(
    SELECT DISTINCT ',[' + ISNULL(COL2,'NO_VAL') + ']'
    FROM TableName  C   
    FOR XML PATH('')
), 1, 1, '') 


EXEC
('
    SELECT Series,' + @PIV_COL + '
    FROM   (
                SELECT Series,
                   ISNULL(COL2,''NO_VAL'') col2,
                   price
            FROM   TableName ) AS SourceTable 
                       PIVOT ( SUM(price) FOR col2 IN ('+ @PIV_COL + ')
    ) AS PivotTable
')