DECLARE @pivot_cols NVARCHAR(MAX)
WITH dist_col_data AS
(
    SELECT DISTINCT [DT] FROM [dbo].[RecordHits]
)
SELECT  @pivot_cols = ISNULL(@pivot_cols + '],[', '') + CAST([DT] AS NVARCHAR(MAX)) FROM dist_col_data ORDER BY [DT];
EXECUTE ('
SELECT [RId],['+ @pivot_cols +']
FROM
(
    SELECT * FROM [dbo].[RecordHits]
) AS p
PIVOT
(
    SUM([Hits]) FOR [DT] IN (['+ @pivot_cols +'])
) AS Q;
')