November 3, 2017 at 2:06 pm
Hi All
i have this Query Below
string updateReq = "UPDATE Student SET Student.ID_Request = Request.ID_Request FROM Request INNER JOIN Request ON Student.ID_Request = Request.ID_Request";
but when i excute this i get this error :
The objects "Request" and "Request" in the FROM clause have the same exposed names. Use correlation names to distinguish them.
how can i solve this ?
What I have tried:
i tried to select the records in the temp table but it doesn't work or maybe i do it wrong
string select = "SELECT * INTO #TempTable FROM Student s where ID_Request IS NULL";
string updateReq = "UPDATE TempTable SET s.ID_Request = Request.ID_Request FROM Request INNER JOIN Request ON Student.ID_Request = Request.ID_Request";
when i excute these string i get the same error
November 3, 2017 at 2:21 pm
aminhitman0212 - Friday, November 3, 2017 2:06 PMHi All
i have this Query Below
string updateReq = "UPDATE Student SET Student.ID_Request = Request.ID_Request FROM Request INNER JOIN Request ON Student.ID_Request = Request.ID_Request";but when i excute this i get this error :
The objects "Request" and "Request" in the FROM clause have the same exposed names. Use correlation names to distinguish them.how can i solve this ?
What I have tried:
i tried to select the records in the temp table but it doesn't work or maybe i do it wrong
string select = "SELECT * INTO #TempTable FROM Student s where ID_Request IS NULL";string updateReq = "UPDATE TempTable SET s.ID_Request = Request.ID_Request FROM Request INNER JOIN Request ON Student.ID_Request = Request.ID_Request";
when i excute these string i get the same error
UPDATE s
SET ID_Request = r.ID_Request
FROM
Student s
JOIN Request r ON s.ID_Request = r.ID_Request;
If you haven't even tried to resolve your issue, please don't expect the hard-working volunteers here to waste their time providing links to answers which you could easily have found yourself.
November 3, 2017 at 3:06 pm
Phil Parkin - Friday, November 3, 2017 2:21 PMaminhitman0212 - Friday, November 3, 2017 2:06 PMHi All
i have this Query Below
string updateReq = "UPDATE Student SET Student.ID_Request = Request.ID_Request FROM Request INNER JOIN Request ON Student.ID_Request = Request.ID_Request";but when i excute this i get this error :
The objects "Request" and "Request" in the FROM clause have the same exposed names. Use correlation names to distinguish them.how can i solve this ?
What I have tried:
i tried to select the records in the temp table but it doesn't work or maybe i do it wrong
string select = "SELECT * INTO #TempTable FROM Student s where ID_Request IS NULL";string updateReq = "UPDATE TempTable SET s.ID_Request = Request.ID_Request FROM Request INNER JOIN Request ON Student.ID_Request = Request.ID_Request";
when i excute these string i get the same error
UPDATE s
SET ID_Request = r.ID_Request
FROM
Student s
JOIN Request r ON s.ID_Request = r.ID_Request;
thanks a lot for your answer
but now i found i need to update that record has the same St_Code in 2 table (Request,Student)
i tried thisUPDATE s SET ID_Request = r.ID_Request where St_Code=@code FROM Student s JOIN Request r ON s.ID_Request = r.ID_Request cmd3.Parameters.Add("@code", SqlDbType.NVarChar).Value = tbStcode.Text;
and i get the error
how put this condition on this update statement ?
November 3, 2017 at 3:26 pm
Qualify the column name.
UPDATE s
SET ID_Request = r.ID_Request
FROM Student s
INNER JOIN Request r ON s.ID_Request = r.ID_Request
WHERE s.St_Code=@code
And WHERE clause goes after the join.
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability
November 12, 2017 at 3:39 pm
Should it look like this?
UPDATE S
SET ID_Request = R.ID_Request
FROM Student S
INNER JOIN Request R ON S.ID_Student = R.ID_Student
where S.ID_Request is null
_____________
Code for TallyGenerator
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