Please help me pivot SQL table below

Question

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SQL-Server-2014

Source	
AccountNo	GSTNumber
A1	1231
A1	1232
A1	1233
A2	1241
A2	1242
A3	1243
A3	1244
A3	1251
A3	1252
A4	1253

output expected

AccountNo	Column1	Column2	Column3	Column4
A1	          1231	1232	1233	
A2	          1241	1242		
A3	          1243	1244	1251	1252
A4	          1253

What I have tried:

select * from 
(select AccountNo, GSTIN from [GST Sales Report]) as s
PIVOT
(
GSTIN
 FOR GSTIN in ()
 )as pvt

Posted 29-Apr-18 23:57pm

sunil mali

Updated 2-May-18 3:07am

v2

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Rajat-Indiandotnet · Accepted Answer · 2018-04-30T03:46:00

For Dynamic columns you can try below solution

CREATE  table #source (AccountNo varchar(2), GSTNumber varchar (5) ,GSTAmount INT)
insert into #source (AccountNo, GSTNumber,GSTAmount) values
('A1',	'GST1',1231),
('A1',	'GST2',1232),
('A1',	'GST3',1233),
('A2',	'GST1',1241),
('A2',	'GST2',1242),
('A3',	'GST1',1243),
('A3',	'GST2',1244),
('A3',	'GST3',1251),
('A3',	'GST4',1252),
('A4',	'GST1',1253)





DECLARE @cols AS NVARCHAR(MAX),
        @query AS NVARCHAR(MAX)

SELECT @cols = STUFF
        (
          (
            SELECT ',' + QUOTENAME(GSTNumber)
            FROM #source
            GROUP BY GSTNumber
                     
            ORDER BY GSTNumber
            FOR XML PATH(''), TYPE
          ).value('.', 'NVARCHAR(MAX)'),
          1,1,''
        );

SET @query = 'SELECT AccountNo,' + @cols + ' 
              FROM
              (
                SELECT AccountNo,GSTNumber,GSTAmount
                FROM #source
             ) x
             PIVOT
             (
                MAX(GStAmount)
                FOR GSTNumber IN (' + @cols + ')
             ) p ';

EXECUTE(@query);

CHill60 · Accepted Answer · 2018-04-30T00:21:00

Solution 1

You need to put the values in that FOR list and use a function e.g.

clare @source table (AccountNo varchar(2), GSTNumber varchar (5))
insert into @source (AccountNo, GSTNumber) values
('A1',	'GST1'),
('A1',	'GST2'),
('A1',	'GST3'),
('A2',	'GST1'),
('A2',	'GST2'),
('A3',	'GST1'),
('A3',	'GST2'),
('A3',	'GST3'),
('A3',	'GST4'),
('A4',	'GST1')

SELECT * FROM 
	(select AccountNo, GSTNumber from @source) src
	PIVOT
	(
		MAX(GSTNumber)
		FOR GSTNumber in (GST1, GST2, GST3, GST4)
	) as pvt

You could just have easily used MIN(GSTNumber), but you do have to have a function there

Posted 30-Apr-18 0:21am

CHill60

v2

Comments

sunil mali 30-Apr-18 6:53am

I am having problem with the column names as my columns are not fixed like,
GST1, GST2, GST3, GST4
This could have any value,

SELECT * FROM
(select AccountNo, GSTNumber from source) src
PIVOT
(
MAX(GSTNumber)
FOR GSTNumber in (select GSTNumber from source)
) as pvt

i want to use select query inside (in) like above. but its not working.

CHill60 30-Apr-18 8:28am

It's not working because that is not the correct syntax for Pivot! :-)
That list has to contain the column names generated by the pivot, it is not a list of values.
In my article Processing Loops in SQL Server[^] I have an example of how to generate that list dynamically