Simplify Dynamic SQL Pivot Table

Question

I have written a Dynamic Pivot Table Query based on the following. Here is a SQL FIDDLE for reference.

CREATE TABLE TestTable1 ([idnumber] INT, [DataTypeId]         


        

Answer 1

Try replacing it with this.

SET NOCOUNT ON
IF OBJECT_ID('TestTable1') IS NOT NULL
DROP TABLE TestTable1
GO

CREATE TABLE TestTable1 ([idnumber] INT, [DataTypeId] INT)
GO

INSERT INTO TestTable1 VALUES 
(1, 108),(1, 108),(1, 108),(2, 108),(2, 108),
(3, 108),(1, 109),(1, 109),(1, 110),(2, 110),
(1, 111),(4, 108),(4, 108),(4, 110),(4, 111)

DECLARE
    @AllColumns NVARCHAR(MAX)

SELECT @AllColumns = ''

SELECT @AllColumns = @AllColumns +
  '[' + CAST(DataTypeId as NVARCHAR)+'],' 
FROM TestTable1
GROUP BY DataTypeId


SET @AllColumns = LEFT(@AllColumns,LEN(@AllColumns)-1)
PRINT @AllColumns