এটি কেবল একটি একক স্ক্রিপ্টের চেয়ে বরং একটি পদ্ধতি তবে আপনাকে আরও অনেক নমনীয়তা দেয়।
সবার আগে 3 টি অবজেক্ট রয়েছে:
- ব্যবহারকারী সংজ্ঞায়িত টেবিল প্রকার [
ColumnActionList] -> পরামিতি হিসাবে ডেটা ধারণ করে
- এসপি [
proc_PivotPrepare] -> আমাদের ডেটা প্রস্তুত করে
- এসপি [
proc_PivotExecute] -> স্ক্রিপ্টটি কার্যকর করুন
প্রকারটি তৈরি করুন [ডিবিও]। [কলাম অ্যাকশনলিস্ট] যেমন টেবিল ([আইডি] [ছোট্ট] নাল নয়, [কলাম নাম] এনভারচর নট নয়, [অ্যাকশন] এনসিআর নট নল); যাওয়া
CREATE PROCEDURE [dbo].[proc_PivotPrepare]
(
@DB_Name nvarchar(128),
@TableName nvarchar(128)
)
AS
SELECT @DB_Name = ISNULL(@DB_Name,db_name())
DECLARE @SQL_Code nvarchar(max)
DECLARE @MyTab TABLE (ID smallint identity(1,1), [Column_Name] nvarchar(128), [Type] nchar(1), [Set Action SQL] nvarchar(max));
SELECT @SQL_Code = 'SELECT [<| SQL_Code |>] = '' '' '
+ 'UNION ALL '
+ 'SELECT ''----------------------------------------------------------------------------------------------------'' '
+ 'UNION ALL '
+ 'SELECT ''-----| Declare user defined type [ID] / [ColumnName] / [PivotAction] '' '
+ 'UNION ALL '
+ 'SELECT ''----------------------------------------------------------------------------------------------------'' '
+ 'UNION ALL '
+ 'SELECT ''DECLARE @ColumnListWithActions ColumnActionList;'''
+ 'UNION ALL '
+ 'SELECT ''----------------------------------------------------------------------------------------------------'' '
+ 'UNION ALL '
+ 'SELECT ''-----| Set [PivotAction] (''''S'''' as default) to select dimentions and values '' '
+ 'UNION ALL '
+ 'SELECT ''-----|'''
+ 'UNION ALL '
+ 'SELECT ''-----| ''''S'''' = Stable column || ''''D'''' = Dimention column || ''''V'''' = Value column '' '
+ 'UNION ALL '
+ 'SELECT ''----------------------------------------------------------------------------------------------------'' '
+ 'UNION ALL '
+ 'SELECT ''INSERT INTO @ColumnListWithActions VALUES ('' + CAST( ROW_NUMBER() OVER (ORDER BY [NAME]) as nvarchar(10)) + '', '' + '''''''' + [NAME] + ''''''''+ '', ''''S'''');'''
+ 'FROM [' + @DB_Name + '].sys.columns '
+ 'WHERE object_id = object_id(''[' + @DB_Name + ']..[' + @TableName + ']'') '
+ 'UNION ALL '
+ 'SELECT ''----------------------------------------------------------------------------------------------------'' '
+ 'UNION ALL '
+ 'SELECT ''-----| Execute sp_PivotExecute with parameters: columns and dimentions and main table name'' '
+ 'UNION ALL '
+ 'SELECT ''----------------------------------------------------------------------------------------------------'' '
+ 'UNION ALL '
+ 'SELECT ''EXEC [dbo].[sp_PivotExecute] @ColumnListWithActions, ' + '''''' + @TableName + '''''' + ';'''
+ 'UNION ALL '
+ 'SELECT ''----------------------------------------------------------------------------------------------------'' '
EXECUTE SP_EXECUTESQL @SQL_Code;
GO
CREATE PROCEDURE [dbo].[sp_PivotExecute]
(
@ColumnListWithActions ColumnActionList ReadOnly
,@TableName nvarchar(128)
)
AS
--#######################################################################################################################
--###| Step 1 - Select our user-defined-table-variable into temp table
--#######################################################################################################################
IF OBJECT_ID('tempdb.dbo.#ColumnListWithActions', 'U') IS NOT NULL DROP TABLE #ColumnListWithActions;
SELECT * INTO #ColumnListWithActions FROM @ColumnListWithActions;
--#######################################################################################################################
--###| Step 2 - Preparing lists of column groups as strings:
--#######################################################################################################################
DECLARE @ColumnName nvarchar(128)
DECLARE @Destiny nchar(1)
DECLARE @ListOfColumns_Stable nvarchar(max)
DECLARE @ListOfColumns_Dimension nvarchar(max)
DECLARE @ListOfColumns_Variable nvarchar(max)
--############################
--###| Cursor for List of Stable Columns
--############################
DECLARE ColumnListStringCreator_S CURSOR FOR
SELECT [ColumnName]
FROM #ColumnListWithActions
WHERE [Action] = 'S'
OPEN ColumnListStringCreator_S;
FETCH NEXT FROM ColumnListStringCreator_S
INTO @ColumnName
WHILE @@FETCH_STATUS = 0
BEGIN
SELECT @ListOfColumns_Stable = ISNULL(@ListOfColumns_Stable, '') + ' [' + @ColumnName + '] ,';
FETCH NEXT FROM ColumnListStringCreator_S INTO @ColumnName
END
CLOSE ColumnListStringCreator_S;
DEALLOCATE ColumnListStringCreator_S;
--############################
--###| Cursor for List of Dimension Columns
--############################
DECLARE ColumnListStringCreator_D CURSOR FOR
SELECT [ColumnName]
FROM #ColumnListWithActions
WHERE [Action] = 'D'
OPEN ColumnListStringCreator_D;
FETCH NEXT FROM ColumnListStringCreator_D
INTO @ColumnName
WHILE @@FETCH_STATUS = 0
BEGIN
SELECT @ListOfColumns_Dimension = ISNULL(@ListOfColumns_Dimension, '') + ' [' + @ColumnName + '] ,';
FETCH NEXT FROM ColumnListStringCreator_D INTO @ColumnName
END
CLOSE ColumnListStringCreator_D;
DEALLOCATE ColumnListStringCreator_D;
--############################
--###| Cursor for List of Variable Columns
--############################
DECLARE ColumnListStringCreator_V CURSOR FOR
SELECT [ColumnName]
FROM #ColumnListWithActions
WHERE [Action] = 'V'
OPEN ColumnListStringCreator_V;
FETCH NEXT FROM ColumnListStringCreator_V
INTO @ColumnName
WHILE @@FETCH_STATUS = 0
BEGIN
SELECT @ListOfColumns_Variable = ISNULL(@ListOfColumns_Variable, '') + ' [' + @ColumnName + '] ,';
FETCH NEXT FROM ColumnListStringCreator_V INTO @ColumnName
END
CLOSE ColumnListStringCreator_V;
DEALLOCATE ColumnListStringCreator_V;
SELECT @ListOfColumns_Variable = LEFT(@ListOfColumns_Variable, LEN(@ListOfColumns_Variable) - 1);
SELECT @ListOfColumns_Dimension = LEFT(@ListOfColumns_Dimension, LEN(@ListOfColumns_Dimension) - 1);
SELECT @ListOfColumns_Stable = LEFT(@ListOfColumns_Stable, LEN(@ListOfColumns_Stable) - 1);
--#######################################################################################################################
--###| Step 3 - Preparing table with all possible connections between Dimension columns excluding NULLs
--#######################################################################################################################
DECLARE @DIM_TAB TABLE ([DIM_ID] smallint, [ColumnName] nvarchar(128))
INSERT INTO @DIM_TAB
SELECT [DIM_ID] = ROW_NUMBER() OVER(ORDER BY [ColumnName]), [ColumnName] FROM #ColumnListWithActions WHERE [Action] = 'D';
DECLARE @DIM_ID smallint;
SELECT @DIM_ID = 1;
DECLARE @SQL_Dimentions nvarchar(max);
IF OBJECT_ID('tempdb.dbo.##ALL_Dimentions', 'U') IS NOT NULL DROP TABLE ##ALL_Dimentions;
SELECT @SQL_Dimentions = 'SELECT [xxx_ID_xxx] = ROW_NUMBER() OVER (ORDER BY ' + @ListOfColumns_Dimension + '), ' + @ListOfColumns_Dimension
+ ' INTO ##ALL_Dimentions '
+ ' FROM (SELECT DISTINCT' + @ListOfColumns_Dimension + ' FROM ' + @TableName
+ ' WHERE ' + (SELECT [ColumnName] FROM @DIM_TAB WHERE [DIM_ID] = @DIM_ID) + ' IS NOT NULL ';
SELECT @DIM_ID = @DIM_ID + 1;
WHILE @DIM_ID <= (SELECT MAX([DIM_ID]) FROM @DIM_TAB)
BEGIN
SELECT @SQL_Dimentions = @SQL_Dimentions + 'AND ' + (SELECT [ColumnName] FROM @DIM_TAB WHERE [DIM_ID] = @DIM_ID) + ' IS NOT NULL ';
SELECT @DIM_ID = @DIM_ID + 1;
END
SELECT @SQL_Dimentions = @SQL_Dimentions + ' )x';
EXECUTE SP_EXECUTESQL @SQL_Dimentions;
--#######################################################################################################################
--###| Step 4 - Preparing table with all possible connections between Stable columns excluding NULLs
--#######################################################################################################################
DECLARE @StabPos_TAB TABLE ([StabPos_ID] smallint, [ColumnName] nvarchar(128))
INSERT INTO @StabPos_TAB
SELECT [StabPos_ID] = ROW_NUMBER() OVER(ORDER BY [ColumnName]), [ColumnName] FROM #ColumnListWithActions WHERE [Action] = 'S';
DECLARE @StabPos_ID smallint;
SELECT @StabPos_ID = 1;
DECLARE @SQL_MainStableColumnTable nvarchar(max);
IF OBJECT_ID('tempdb.dbo.##ALL_StableColumns', 'U') IS NOT NULL DROP TABLE ##ALL_StableColumns;
SELECT @SQL_MainStableColumnTable = 'SELECT xxx_ID_xxx = ROW_NUMBER() OVER (ORDER BY ' + @ListOfColumns_Stable + '), ' + @ListOfColumns_Stable
+ ' INTO ##ALL_StableColumns '
+ ' FROM (SELECT DISTINCT' + @ListOfColumns_Stable + ' FROM ' + @TableName
+ ' WHERE ' + (SELECT [ColumnName] FROM @StabPos_TAB WHERE [StabPos_ID] = @StabPos_ID) + ' IS NOT NULL ';
SELECT @StabPos_ID = @StabPos_ID + 1;
WHILE @StabPos_ID <= (SELECT MAX([StabPos_ID]) FROM @StabPos_TAB)
BEGIN
SELECT @SQL_MainStableColumnTable = @SQL_MainStableColumnTable + 'AND ' + (SELECT [ColumnName] FROM @StabPos_TAB WHERE [StabPos_ID] = @StabPos_ID) + ' IS NOT NULL ';
SELECT @StabPos_ID = @StabPos_ID + 1;
END
SELECT @SQL_MainStableColumnTable = @SQL_MainStableColumnTable + ' )x';
EXECUTE SP_EXECUTESQL @SQL_MainStableColumnTable;
--#######################################################################################################################
--###| Step 5 - Preparing table with all options ID
--#######################################################################################################################
DECLARE @FULL_SQL_1 NVARCHAR(MAX)
SELECT @FULL_SQL_1 = ''
DECLARE @i smallint
IF OBJECT_ID('tempdb.dbo.##FinalTab', 'U') IS NOT NULL DROP TABLE ##FinalTab;
SELECT @FULL_SQL_1 = 'SELECT t.*, dim.[xxx_ID_xxx] '
+ ' INTO ##FinalTab '
+ 'FROM ' + @TableName + ' t '
+ 'JOIN ##ALL_Dimentions dim '
+ 'ON t.' + (SELECT [ColumnName] FROM @DIM_TAB WHERE [DIM_ID] = 1) + ' = dim.' + (SELECT [ColumnName] FROM @DIM_TAB WHERE [DIM_ID] = 1);
SELECT @i = 2
WHILE @i <= (SELECT MAX([DIM_ID]) FROM @DIM_TAB)
BEGIN
SELECT @FULL_SQL_1 = @FULL_SQL_1 + ' AND t.' + (SELECT [ColumnName] FROM @DIM_TAB WHERE [DIM_ID] = @i) + ' = dim.' + (SELECT [ColumnName] FROM @DIM_TAB WHERE [DIM_ID] = @i)
SELECT @i = @i +1
END
EXECUTE SP_EXECUTESQL @FULL_SQL_1
--#######################################################################################################################
--###| Step 6 - Selecting final data
--#######################################################################################################################
DECLARE @STAB_TAB TABLE ([STAB_ID] smallint, [ColumnName] nvarchar(128))
INSERT INTO @STAB_TAB
SELECT [STAB_ID] = ROW_NUMBER() OVER(ORDER BY [ColumnName]), [ColumnName]
FROM #ColumnListWithActions WHERE [Action] = 'S';
DECLARE @VAR_TAB TABLE ([VAR_ID] smallint, [ColumnName] nvarchar(128))
INSERT INTO @VAR_TAB
SELECT [VAR_ID] = ROW_NUMBER() OVER(ORDER BY [ColumnName]), [ColumnName]
FROM #ColumnListWithActions WHERE [Action] = 'V';
DECLARE @y smallint;
DECLARE @x smallint;
DECLARE @z smallint;
DECLARE @FinalCode nvarchar(max)
SELECT @FinalCode = ' SELECT ID1.*'
SELECT @y = 1
WHILE @y <= (SELECT MAX([xxx_ID_xxx]) FROM ##FinalTab)
BEGIN
SELECT @z = 1
WHILE @z <= (SELECT MAX([VAR_ID]) FROM @VAR_TAB)
BEGIN
SELECT @FinalCode = @FinalCode + ', [ID' + CAST((@y) as varchar(10)) + '.' + (SELECT [ColumnName] FROM @VAR_TAB WHERE [VAR_ID] = @z) + '] = ID' + CAST((@y + 1) as varchar(10)) + '.' + (SELECT [ColumnName] FROM @VAR_TAB WHERE [VAR_ID] = @z)
SELECT @z = @z + 1
END
SELECT @y = @y + 1
END
SELECT @FinalCode = @FinalCode +
' FROM ( SELECT * FROM ##ALL_StableColumns)ID1';
SELECT @y = 1
WHILE @y <= (SELECT MAX([xxx_ID_xxx]) FROM ##FinalTab)
BEGIN
SELECT @x = 1
SELECT @FinalCode = @FinalCode
+ ' LEFT JOIN (SELECT ' + @ListOfColumns_Stable + ' , ' + @ListOfColumns_Variable
+ ' FROM ##FinalTab WHERE [xxx_ID_xxx] = '
+ CAST(@y as varchar(10)) + ' )ID' + CAST((@y + 1) as varchar(10))
+ ' ON 1 = 1'
WHILE @x <= (SELECT MAX([STAB_ID]) FROM @STAB_TAB)
BEGIN
SELECT @FinalCode = @FinalCode + ' AND ID1.' + (SELECT [ColumnName] FROM @STAB_TAB WHERE [STAB_ID] = @x) + ' = ID' + CAST((@y+1) as varchar(10)) + '.' + (SELECT [ColumnName] FROM @STAB_TAB WHERE [STAB_ID] = @x)
SELECT @x = @x +1
END
SELECT @y = @y + 1
END
SELECT * FROM ##ALL_Dimentions;
EXECUTE SP_EXECUTESQL @FinalCode;
প্রথম ক্যোয়ারী কার্যকর করা থেকে (উত্স ডিবি এবং টেবিলের নামটি পাস করে) আপনি দ্বিতীয় এসপির জন্য একটি প্রাক-নির্ধারিত এক্সিকিউশন ক্যোয়ারী পাবেন, আপনাকে যা করতে হবে তা হ'ল আপনার উত্স থেকে কলামটি নির্ধারণ করা হবে: + স্থিত + মান (ব্যবহৃত হবে) এর উপর ভিত্তি করে মানগুলি কেন্দ্রীভূত করতে)
নাম এবং ডেটাটাইপগুলি স্বয়ংক্রিয়ভাবে সংজ্ঞায়িত হবে!
আমি এটি কোনও উত্পাদন পরিবেশের জন্য সুপারিশ করতে পারি না তবে অ্যাডহক বিআই অনুরোধগুলির জন্য কাজ করে।
cross joinবরং পরিবর্তে ব্যবহার করতে পারেনleft joinকারণ প্রতিটি সাবকিউরি এক সারিতে ফিরে আসে।