Creating a JSON result from SQL server database

Question

I have an SQL server with the following layout

Table (    id int
           title varchar(40),
           start Date(),
           end Date(),
           al         


        

Answer 1

DECLARE @listCol VARCHAR(2000)
DECLARE @query VARCHAR(4000)

SELECT  @listCol = STUFF(( SELECT distinct  '], [' + [PSize]
                           FROM     Pattern
                         FOR
                           XML PATH('')
                         ), 1, 2, '') + ']'


SET @query = 'SELECT * FROM
      (SELECT PColour as Colour_Size_Matrix, PSize, PCode
            FROM Pattern
            ) src
PIVOT (Count(PCode) FOR PSize
IN (' + @listCol + ')) AS pvt'

EXECUTE ( @query )

I want the result of this query as JSON