Getting dynamic query select fields to show in Crystal Reports - sql-server

Question

I have what I consider to be a pretty complicated query (at least to me) and I decided to attempt to solve it using dynamic SQL. However I have two issues that I have not been able to solve.
Situation
In a table, a user can enter an item which has an amount, week and status.
So the data is supposed to resembles this format.
Week 1 Week 2
---------+-----------+-------------
Status 1 | 50 25
Status 2 10 20
And this is the data in SQL.
Status 1 | Week 1 | 25
Status 1 | Week 1 | 25
Status 1 | Week 2 | 25
Status 2 | Week 1 | 2
Status 2 | Week 1 | 8
Status 2 | Week 1 | 10
Status 2 | Week 1 | 10
For each status I sum the amount based on weeks using a dynamic pivot table.
What have I attempted:
--EXEC usp_weekReport #weeks=1, #year='2019'
ALTER PROCEDURE usp_weekReport
(#weeks INT,
#year NVARCHAR(4))
AS
DECLARE #columns NVARCHAR(MAX), #sql NVARCHAR(MAX);
SET #columns = N'';
SELECT #columns += N', p.' + QUOTENAME([week])
FROM
(SELECT p.[week]
FROM [dbo].[Invoices] P
WHERE DATEPART(YEAR, P.date) = #year
AND ([week] IN (#weeks)
OR [week] IN (#weeks + 1)
OR [week] IN (#weeks + 2)
OR [week] IN (#weeks + 3)
OR [week] IN (#weeks + 4)
OR [week] IN (#weeks + 5))
GROUP BY P.[week]) AS x;
SET #sql = N'
SELECT p.[statusName],' + STUFF(#columns, 1, 2, '') + '
FROM
(
SELECT
SUM(CAST(REPLACE(REPLACE(A.amount,'','',''''),''$'','''') AS FLOAT)) as sumInvoice,
A.invoiceStatusID_FK,
B.statusName,
[week]
FROM [dbo].[Invoices] A
INNER JOIN invoiceStatus B
ON A.invoiceStatusID_FK=B.invoiceStatusID
GROUP BY invoiceStatusID_FK,B.statusName,[week]--,C.programme
) AS j
PIVOT
(
SUM(sumInvoice) FOR [week] IN ('
+ STUFF(REPLACE(#columns, ', p.[', ',['), 1, 1, '')
+ ')
) AS p;';
--PRINT #sql;
--EXEC sp_executesql #sql;
CREATE TABLE #reportResult
(
statusName nvarchar(50),
weekA INT DEFAULT 0,
weekB int DEFAULT 0
--weekC int DEFAULT 0,
--weekD int DEFAULT 0,
--weekE int DEFAULT 0,
--weekF int DEFAULT 0
)
INSERT #reportResult Exec(#sql)
SELECT statusName, weekA,weekB--,weekC,weekD,weekE,weekF -- here you have "static SELECT with field names"
FROM #reportResult
DROP TABLE #reportResult
To solve this, I have the above code and while it works(returns the values in SQL) I have two issues.
Problems
My first problem is that, I cannot use this code in conjunction with creating a report in Crystal Reports. When I import the stored procedure, the columns shows up blank. I looked at the following link. [Select field Names from Dynamic SQL query][1]
[1]: SELECT fieldnames FROM dynamic SQL query and even if I attempted to model my answer after what was said to work exactly. It does not seem to work for me as my data columns are still blank in Crystal.
I had the idea of calling my first stored procedure from a separate stored procedure but given of how my answer is returned (not just a single value that I can assign to a variable, currently thinking of returning a table value function) I doubt that that would work.
A second problem that developed is because my 'weeks' are dynamic (up to 6 weeks) I cant create the temp table with "Spare" columns or I get an error (incorrect number of columns), as you see i commented them out and I also can't use "Select into"
Appreciate any assistance or ideas offered.

Answer 1

Try following, it uses Global TEMP table:
ALTER PROCEDURE usp_weekReport
#weeks INT,
#year NVARCHAR(4)
AS
BEGIN
DECLARE #columns NVARCHAR(MAX), #sql NVARCHAR(MAX);
SET #columns = N'';
SELECT #columns+=N', p.'+QUOTENAME([week])
FROM (
SELECT p.[week]
FROM [dbo].[Invoices] P
WHERE DATEPART(YEAR, P.date) = #year
AND ([week] IN(#weeks)
OR [week] IN(#weeks + 1)
OR [week] IN(#weeks + 2)
OR [week] IN(#weeks + 3)
OR [week] IN(#weeks + 4)
OR [week] IN(#weeks + 5))
GROUP BY P.[week]
) AS x;
SET #sql = N'
SELECT p.[statusName],'+STUFF(#columns, 1, 2, '')+'
into ##reportResult
FROM
(
SELECT
SUM(CAST(REPLACE(REPLACE(A.amount,'','',''''),''$'','''') AS FLOAT)) as sumInvoice,
A.invoiceStatusID_FK,
B.statusName,
[week]
FROM [dbo].[Invoices] A
INNER JOIN invoiceStatus B
ON A.invoiceStatusID_FK=B.invoiceStatusID
GROUP BY invoiceStatusID_FK,B.statusName,[week]--,C.programme
) AS j
PIVOT
(
SUM(sumInvoice) FOR [week] IN ('+STUFF(REPLACE(#columns, ', p.[', ',['), 1, 1, '')+')
) AS p;';
EXEC sp_executesql #sql;
SELECT *
FROM ##reportResult;
IF OBJECT_ID('tempdb..##reportResult') IS NOT NULL
BEGIN
DROP TABLE ##reportResult;
END;
END
Here is a solution without the Global temp table:
ALTER PROCEDURE usp_weekReport
#weeks INT,
#year NVARCHAR(4)
AS
BEGIN
DECLARE #columns NVARCHAR(MAX), #sql NVARCHAR(MAX), #COLCOUNT int, #TableColumns NVARCHAR(MAX);
SET #columns = N'';
SELECT #columns+=N', p.'+QUOTENAME([week])
FROM (
SELECT p.[week]
FROM [dbo].[Invoices] P
WHERE DATEPART(YEAR, P.date) = #year
AND ([week] IN(#weeks)
OR [week] IN(#weeks + 1)
OR [week] IN(#weeks + 2)
OR [week] IN(#weeks + 3)
OR [week] IN(#weeks + 4)
OR [week] IN(#weeks + 5))
GROUP BY P.[week]
) AS x;
SELECT #COLCOUNT = count(*)
FROM (
SELECT p.[week]
FROM [dbo].[Invoices] P
WHERE DATEPART(YEAR, P.date) = #year
AND ([week] IN(#weeks)
OR [week] IN(#weeks + 1)
OR [week] IN(#weeks + 2)
OR [week] IN(#weeks + 3)
OR [week] IN(#weeks + 4)
OR [week] IN(#weeks + 5))
GROUP BY P.[week]
) AS x;
SELECT #TableColumns = CASE When #COLCOUNT = 1 THEN 'weekA'
When #COLCOUNT = 2 THEN 'weekA, weekB'
When #COLCOUNT = 3 THEN 'weekA, weekB, weekC'
When #COLCOUNT = 4 THEN 'weekA, weekB, weekC, weekD'
When #COLCOUNT = 5 THEN 'weekA, weekB, weekC, weekD, weekE'
When #COLCOUNT = 6 THEN 'weekA, weekB, weekC, weekD, weekE, weekF'
end;
CREATE TABLE #reportResult
(
statusName nvarchar(50),
weekA INT DEFAULT 0,
weekB int DEFAULT 0,
weekC int DEFAULT 0,
weekD int DEFAULT 0,
weekE int DEFAULT 0,
weekF int DEFAULT 0
)
SET #sql = N'
INSERT INTO #reportResult (statusName,' + #TableColumns + ')
SELECT p.[statusName],'+STUFF(#columns, 1, 2, '')+'
into ##reportResult
FROM
(
SELECT
SUM(CAST(REPLACE(REPLACE(A.amount,'','',''''),''$'','''') AS FLOAT)) as sumInvoice,
A.invoiceStatusID_FK,
B.statusName,
[week]
FROM [dbo].[Invoices] A
INNER JOIN invoiceStatus B
ON A.invoiceStatusID_FK=B.invoiceStatusID
GROUP BY invoiceStatusID_FK,B.statusName,[week]--,C.programme
) AS j
PIVOT
(
SUM(sumInvoice) FOR [week] IN ('+STUFF(REPLACE(#columns, ', p.[', ',['), 1, 1, '')+')
) AS p;';
EXEC sp_executesql #sql;
SELECT *
FROM #reportResult;
IF OBJECT_ID('tempdb..#reportResult') IS NOT NULL
BEGIN
DROP TABLE #reportResult;
END;
END