How to eliminate column with same name using self join? - sql-server

Question

In this stored procedure, I have to use
SELECT *
FROM #policyData a
LEFT OUTER JOIN ##Temp b ON b.qguid = a.quoteguid
LEFT OUTER JOIN ##Temp c ON c.qguid = a.quoteguid2;
And because of that I have two columns with the same name "QuoteGuid".
Then when I try to add this query in SSRS, I get an error, because I have 2 columns with the same name.
I am not the author of this stored procedure, so I cannot understand is any chance to eliminate or rename column name that causing this.
CREATE PROCEDURE dbo.SP_Catalytic_WindEQRenewalExtract
#pos INT,
#len INT,
#value varchar(8000),
#PriorDays INT,
#PastDays INT,
#LineName varchar(50)
AS
SET NOCOUNT ON;
SELECT #LineName ='wind'
SELECT #PriorDays= -15
SELECT #PastDays = 55
DECLARE #policyData TABLE
(
NamedInsured varchar(1000),
displaystatus varchar(100),
quoteguid uniqueidentifier,
quoteid int,
controlno int,
ExpirationDate datetime,
MonthName nvarchar(25),
ExpiringPremium money,
Underwriter varchar(250),
linename varchar(25),
RenewalSubmissionRecieved varchar(5),
QuotedPremium money,
quoteguid2 uniqueidentifier,
controlno2 int,
displaystatus2 varchar(50),
quotestatuscomment varchar(2500),
quotestatusreasoncomment varchar(2500),
BoundPremium money,
Underwriter2 varchar(500)
)
INSERT INTO #policyData
EXEC ('Catalytic_sp_FetchRenewalPolicy ' + #PriorDays + ',' + #PastDays + ', ' + #LineName + '')
DECLARE #cols AS NVARCHAR(MAX),
#query AS NVARCHAR(MAX)
SET #cols = STUFF((SELECT ',' + QUOTENAME(c.locationCode)
FROM Catalytic_vw_LocationCodeByLine c WHERE c.linename =#LineName order by c.CompanyName, c.LocationCode
FOR XML PATH('')),1,1,'')
IF OBJECT_ID('tempdb.dbo.##Temp', 'U') IS NOT NULL
DROP TABLE ##Temp;
set #query =
'select * into ##Temp
from
(SELECT QUOTEGUID as qguid, ' + #cols + ' from
(
select QuoteGUID, LocationCode, LineName,LineGUID
--from Catalytic_vw_PolicyLocationCode where quoteguid=''99D60178-C33B-4A3F-9EA7-0001EF31626A''
from Catalytic_vw_PolicyLocationCode
) x
pivot
(
max(locationCode)
for locationCode in (' + #cols + ')
)p)x'
EXEC sp_executesql #query;
set #pos = 0
set #len = 0
WHILE CHARINDEX(',', #cols, #pos+1)>0
BEGIN
set #len = CHARINDEX(',', #cols, #pos+1) - #pos
set #value = SUBSTRING(#cols, #pos, #len)
-- PRINT #value
set #pos = CHARINDEX(',', #cols, #pos+#len) +1
declare #sql nvarchar (1000);
set #sql = N'update ##Temp set ' + #value + '= ''X'' where len(' + #value + ') > 0 ' ;
exec sp_executesql #sql;
END
SELECT *
FROM
#policyData a
LEFT OUTER JOIN ##Temp b on b.qguid = a.quoteguid
/*Because I am using another LEFT JOIN here, I have two columns namem "qguid"*/
LEFT OUTER JOIN ##Temp c on c.qguid = a.quoteguid2;
DROP TABLE ##Temp;

Answer 1

just change where you are trying to make another left join in the last and explicitly mention all column name.
SELECT a.* ,b.*,c.qguid as qguid1
FROM
#policyData a
LEFT OUTER JOIN ##Temp b on b.qguid = a.quoteguid
/*Because I am using another LEFT JOIN here, I have two columns namem "qguid"*/
LEFT OUTER JOIN ##Temp c on c.qguid = a.quoteguid2;
Another way,
declare #CurDate datetime=getdate()
Declare #CurDate1 varchar(8)
select #CurDate1= replace(convert(varchar(8), #CurDate, 112), ':','')
select #CurDate1
SET #cols = STUFF((SELECT ',' + QUOTENAME(c.locationCode) +#CurDate1
FROM Catalytic_vw_LocationCodeByLine c WHERE c.linename =#LineName order by c.CompanyName, c.LocationCode
FOR XML PATH('')),1,1,'')

Answer 2

If I am understanding your question correctly you need to use an existing stored procedure to get data for an SSRS report and you cannot modify the procedure. The problem is the stored procedure returns two columns with the same name and SSRS will not accept that in a dataset.
To get around that call the stored procedure and store its results in a temp table with different column names. Then output the temp table contents. This gives you fill control over the name of the columns. See example below.
CREATE PROCEDURE dbo.sp_Test
AS
BEGIN
SELECT
1 AS 'Test1',
2 AS 'Test2',
3 AS 'Test3',
3 AS 'Test3'
END
CREATE TABLE #Test
(
Test1 int,
Test2 int,
Test3 int,
Test4 int
)
INSERT INTO #Test
EXEC dbo.sp_Test
SELECT * FROM #Test
DROP TABLE #Test