Is this possible? Crosstab query

Question

Hi All,
I have a rather complicated requirement am trying to fulfill. I'll make it simple and leave unnecessary details out. I have a table with structure similar to shown below.
DECLARE @Trans TABLE (
trans_year int NULL,
customer_name nvarchar(100) NULL,
Amount FLOAT,
Quantity FLOAT)
INSERT INTO @Trans VALUES (2010, 'ABC', 100, 200)
INSERT INTO @Trans VALUES (2011, 'ABC', 200, 100)
INSERT INTO @Trans VALUES (2012, 'ABC', 500, 100)
INSERT INTO @Trans VALUES (2013, 'ABC', 400, 700)
INSERT INTO @Trans VALUES (2014, 'ABC', 600, 800)
SELECT * FROM @Trans
What I am trying to do is, for each customer, get all the amounts across by year. And for each year, I need to add a field that can show the total
until that year(sort of like YTD). This code will be executed in a stored procedure and the stored procedure has two parameters called start_year and end_year. For the first year provided as the parameter, we don't need the Total column as
it is going to be same as the amount for that year. Also, the quantity column is going to act like a normal column(not shown in the desired output below) and can be ignored for our discussion. Below is how the output needs to be.
Can someone please help? Thanks in advance!!
Cust
2010
2011
Total 
2012
Total 
2013
Total 
2014
Total 
 ABC
100
200
300
500
800
400
1200
600
1800

Answer 1

Well, to fix your immediate problem you needed to use correct variable in the loop (@year).
So, this is your code corrected
CREATE TABLE #Trans (
trans_year INT NULL
,customer_name NVARCHAR(100) NULL
,Amount FLOAT
,Quantity FLOAT
INSERT INTO #Trans
VALUES (
2010
,'ABC'
,100
,200
INSERT INTO #Trans
VALUES (
2011
,'ABC'
,200
,100
INSERT INTO #Trans
VALUES (
2012
,'ABC'
,500
,100
INSERT INTO #Trans
VALUES (
2013
,'ABC'
,400
,700
INSERT INTO #Trans
VALUES (
2014
,'ABC'
,600
,800
DECLARE @StartYear INT
,@EndYear INT;
SELECT @StartYear = MIN(trans_year)
,@EndYear = MAX(trans_year)
FROM #Trans;
DECLARE @Columns NVARCHAR(max)
,@Year INT;
SET @Columns = '';
SET @Year = @StartYear
WHILE @Year <= @EndYear
BEGIN
SET @Columns = @Columns + ', ' + quotename(cast(@year AS NVARCHAR(max)))
SET @Year = @Year + 1;
END
SET @Columns = STUFF(@Columns, 1, 2, '');
DECLARE @SQL NVARCHAR(max);
SET @SQL = ';WITH CTE AS (SELECT trans_year, customer_name, Amount FROM #Trans
WHERE trans_year >= @StartYear and trans_year < @EndYear)
SELECT * FROM CTE PIVOT (SUM(Amount) FOR trans_year IN (' + @Columns + ')) pvt'
--print @SQL;
EXECUTE sp_ExecuteSQL @SQL
,N'@StartYear INT, @EndYear INT'
,@StartYear
,@EndYear
DROP TABLE #Trans
However, this is not exactly what I had in mind for your case. In your case since you wanted to add Total columns in between I proposed to use slightly different approach of using CASE expressions and GROUP BY.
Will you be able to figure this out now or you need the solution spelled out?
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