Issue in procedure (resolve the collation conflict) - sql-server

Question

I have written a stored procedure like below lines of code
ALTER PROCEDURE [dbo].[pr_AgentLinceseInfo_Fetch]
AS
BEGIN
IF OBJECT_ID('tempdb..#BrList') IS NOT NULL
DROP TABLE #BrList
CREATE TABLE #BrList
(
AgentCode nvarchar(max)
,BrokerName nvarchar(max)
,LicenceID bigint
,LicenceNumber nvarchar(max)
,EffectiveDate datetime
,ExpirationDate datetime
,State nvarchar(max)
);
INSERT INTO #BrList
SELECT
a.AgentCode AS BrokerCode,
sy.BrokerName,
L.Licence, L.LicenceNumber,
DateIssued AS EffectiveDate,
L.ExpirationDate,
J.JurisdictionX AS State
FROM
tbAgent AS a
INNER JOIN
tbLicence L ON L.AgentId = a.Agent
LEFT OUTER JOIN
(SELECT Jurisdiction, JurisdictionX
FROM tbJurisdiction) AS j ON j.Jurisdiction =
(CASE
WHEN ISNULL(L.Jurisdiction, '0') = '0'
THEN a.PhysicalAddressState
ELSE L.Jurisdiction
END)
LEFT OUTER JOIN
(SELECT
SystemUser, (FirstName + ' ' + LastName) AS BrokerName
FROM tbSystemUser) AS sy ON sy.SystemUser = a.SystemUser
SELECT * FROM #BrList
SELECT
t.*, p.ProductX, p.ProductCode
FROM
tbCompanyAgent ca
LEFT OUTER JOIN
(SELECT
AgentCode, BrokerName,
LicenceID, LicenceNumber,
EffectiveDate, ExpirationDate, [State]
FROM #BrList) AS t ON t.LicenceNumber = ca.LicenceNumber
INNER JOIN
tbProduct p ON p.Product = ca.ProductId
DROP TABLE #BrList
END
When we execute this procedure, it throws error message
Cannot resolve the collation conflict
Cannot resolve the collation
conflict between "SQL_Latin1_General_CP1_CI_AS" and
"Latin1_General_CI_AI" in the equal to operation.

Answer 1

The problem is you have two different collations in comparing columns
You should not have two different collation in columns when you want to compare them.
Example:
Consider the following query
SELECT 1
WHERE 'a' COLLATE SQL_Latin1_General_CP1_CI_AS = 'a' COLLATE Latin1_General_CI_AI
Which will throw error stating
Msg 468, Level 16, State 9, Line 1 Cannot resolve the collation
conflict between "Latin1_General_CI_AI" and
"SQL_Latin1_General_CP1_CI_AS" in the equal to operation.
It can resolved by explictly making the collation same in both LHS and RHS
SELECT 1
WHERE 'a' COLLATE SQL_Latin1_General_CP1_CI_AS = 'a' COLLATE SQL_Latin1_General_CP1_CI_AS.
Try updating your query like this
SELECT t.*,
p.ProductX,
p.ProductCode
FROM tbCompanyAgent ca
LEFT OUTER JOIN (SELECT AgentCode,
BrokerName,
LicenceID,
LicenceNumber,
EffectiveDate,
ExpirationDate,
[State]
FROM #BrList) AS t
ON t.LicenceNumber COLLATE SQL_Latin1_General_CP1_CI_AS = ca.LicenceNumber COLLATE SQL_Latin1_General_CP1_CI_AS
INNER JOIN tbProduct p
ON p.Product COLLATE SQL_Latin1_General_CP1_CI_AS = ca.ProductId COLLATE SQL_Latin1_General_CP1_CI_AS

Answer 2

jUST ADD this line -> SQL_Latin1_Generstrong textal_CP1_CI_AS in your joinings. Thats it :)
https://premkt.blogspot.my/2016/12/error-cannot-resolve-collation-conflict.html