Convert multiple records into one column
In SQL 2008, I have below table and need to convert into following table creating one record for each
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
Converted
Date Name Red Green Blue Grey Yellow Orange
Nov01 John Red
Nov02 Mike Green Blue Grey
Nov03 Melissa Yellow Orange
Nov10 Ri开发者_JS百科ta Red Pink
See below pic, as I do not know how to format table here
Many thanks.
See:
How to pivot rows into columns (custom pivoting)
Looks like you want a Dynamic Pivot.
Add this Stored Procedure:
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
and then
exec pivotsp 'select * from mytable',
'[date],name',
'colours',
'min',
'#temp'
select * from #temp
(The MIN is a bit of a hack, but it should produce what you want)
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