Convertir plusieurs enregistrements dans une colonne

Question

Dans SQL Server 2008, je tableau ci-dessous et le besoin de convertir en tableau suivant la création d'un enregistrement pour chaque

Date Name Colors 
Nov01 John Red 
Nov02 Mike Green 
Nov02 Mike Blue 
Nov02 Mike Grey 
Nov03 Melissa Yellow 
Nov03 Melissa Orange 
Nov10 Rita Pink 
Nov10 Rita Red 

Converti

Date Name Red Green Blue Grey Yellow Orange 
Nov01 John Red 
Nov02 Mike  Green Blue Grey 
Nov03 Melissa     Yellow Orange 
Nov10 Rita Red      Pink 

Voir ci-dessous pic, comme je ne savent pas comment formater la table ici

Merci beaucoup.

Answer 1

Voir:

How to pivot rows into columns (custom pivoting)

Answer 2

On dirait que vous voulez un Dynamic Pivot.

Ajouter cette procédure stockée:

CREATE PROC [dbo].[pivotsp] 
    @query AS NVARCHAR(MAX),     -- The query, can also be the name of a table/view. 
    @on_rows AS NVARCHAR(MAX),     -- The columns that will be regular rows. 
    @on_cols AS NVARCHAR(MAX),     -- The columns that are to be pivoted. 
    @agg_func AS NVARCHAR(257) = N'SUM',   -- Aggregate function. 
    @agg_col AS NVARCHAR(MAX),     -- Column to aggregate. 
    @output AS NVARCHAR(257) = N'',    -- Table for results 
    @debug AS bit = 0       -- 1 for debugging 
AS 

-- Example usage: 
-- exec pivotsp 
--   'select * from vsaleshistory', 
--   'market,marketid,family,familyid,Forecaster,Forecasterid,product,productid', 
--   'month', 
--   'sum', 
--   'ku', 
--   '##sales' 

-- Input validation 
IF @query IS NULL OR @on_rows IS NULL OR @on_cols IS NULL 
    OR @agg_func IS NULL OR @agg_col IS NULL 
BEGIN 
    RAISERROR('Invalid input parameters.', 16, 1); 
    RETURN; 
END 

-- Additional input validation goes here (SQL Injection attempts, etc.) 

BEGIN TRY 
    DECLARE 
    @sql  AS NVARCHAR(MAX), 
    @cols AS NVARCHAR(MAX), 
    @newline AS NVARCHAR(2); 

    SET @newline = NCHAR(13) + NCHAR(10); 

    -- If input is a valid table or view 
    -- construct a SELECT statement against it 
    IF COALESCE(OBJECT_ID(@query, N'U'), 
       OBJECT_ID(@query, N'V')) IS NOT NULL 
    SET @query = N'SELECT * FROM ' + @query; 

    -- Make the query a derived table 
    SET @query = N'(' + @query + N') AS Query'; 

    -- Handle * input in @agg_col 
    IF @agg_col = N'*' 
    SET @agg_col = N'1'; 

    -- Construct column list 
    SET @sql = 
     N'SET @result = '         + @newline + 
     N' STUFF('           + @newline + 
     N' (SELECT N'','' + quotename(' 
        + 'CAST(pivot_col AS sysname)' + 
        + ') AS [text()]'       + @newline + 
     N'  FROM (SELECT DISTINCT(' 
        + @on_cols + N') AS pivot_col'    + @newline + 
     N'   FROM' + @query + N') AS DistinctCols' + @newline + 
     N'  ORDER BY pivot_col'       + @newline + 
     N'  FOR XML PATH(''''))'       + @newline + 
     N' ,1, 1, N'''');' 

    IF @debug = 1 
    PRINT @sql 

    EXEC sp_executesql 
    @stmt = @sql, 
    @params = N'@result AS NVARCHAR(MAX) OUTPUT', 
    @result = @cols OUTPUT; 

    IF @debug = 1 
    PRINT @cols 

    -- Create the PIVOT query 
    IF @output = N'' 
     begin 
     SET @sql = 
      N'SELECT *'           + @newline + 
      N'FROM (SELECT ' 
          + @on_rows 
          + N', ' + @on_cols + N' AS pivot_col' 
          + N', ' + @agg_col + N' AS agg_col'  + @newline + 
      N'  FROM ' + @query + N')' + 
          + N' AS PivotInput'      + @newline + 
      N' PIVOT(' + @agg_func + N'(agg_col)'    + @newline + 
      N' FOR pivot_col IN(' + @cols + N')) AS PivotOutput;' 
     end 
    ELSE 
     begin 
     set @sql = 'IF EXISTS (SELECT * FROM tempdb.sys.objects WHERE ' + 
      'name = ''' + @output + ''' AND type = N''U'') DROP TABLE tempdb.' + @output 
     EXEC sp_executesql @sql; 

     SET @sql = 
      N'SELECT * INTO ' + @output       + @newline + 
      N'FROM (SELECT ' 
          + @on_rows 
          + N', ' + @on_cols + N' AS pivot_col' 
          + N', ' + @agg_col + N' AS agg_col'  + @newline + 
      N'  FROM ' + @query + N')' + 
          + N' AS PivotInput'      + @newline + 
      N' PIVOT(' + @agg_func + N'(agg_col)'    + @newline + 
      N' FOR pivot_col IN(' + @cols + N')) AS PivotOutput;' 
     end 

    IF @debug = 1 
     PRINT @sql 

    EXEC sp_executesql @sql; 
END TRY 
BEGIN CATCH 
    DECLARE 
    @error_message AS NVARCHAR(2047), 
    @error_severity AS INT, 
    @error_state AS INT; 

    SET @error_message = ERROR_MESSAGE(); 
    SET @error_severity = ERROR_SEVERITY(); 
    SET @error_state = ERROR_STATE(); 

    RAISERROR(@error_message, @error_severity, @error_state); 

    RETURN; 
END CATCH 

puis

exec pivotsp 'select * from mytable', 
    '[date],name', 
    'colours', 
    'min', 
    '#temp' 
select * from #temp 

(Le MIN est un peu un hack, mais il doit produire ce que vous voulez)