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must declare the scalar variable!


must declare the scalar variable!

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edalatfeizi
edalatfeizi
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hello every body.
I have a question about declaring variable in sql server 2012.
when i declare a variable for example :
  DECLARE @X INT;  


when i compile this line it's true
but when i set a value in different line to this variable:
  SET  @X =12;  


it returns an error message as:
 Must declare the scalar variable @X 


how can i fix it?
ChrisM@Work
ChrisM@Work
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Can you post all of the code between the DECLARE and the SET?

“Write the query the simplest way. If through testing it becomes clear that the performance is inadequate, consider alternative query forms.” - Gail Shaw

For fast, accurate and documented assistance in answering your questions, please read this article.
Understanding and using APPLY, (I) and (II) Paul White
Hidden RBAR: Triangular Joins / The "Numbers" or "Tally" Table: What it is and how it replaces a loop Jeff Moden
Exploring Recursive CTEs by Example Dwain Camps
edalatfeizi
edalatfeizi
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thank you ChrisM@Work.
but I have not entered any code between DECLARE and SET my code is:
DECLARE @X INT;
SET @X =12;


ChrisM@Work
ChrisM@Work
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edalatfeizi (5/9/2013)
thank you ChrisM@Work.
but I have not entered any code between DECLARE and SET my code is:
DECLARE @X INT;
SET @X =12;



Not even this?

DECLARE @X INT;
GO
SET @X =12;



“Write the query the simplest way. If through testing it becomes clear that the performance is inadequate, consider alternative query forms.” - Gail Shaw

For fast, accurate and documented assistance in answering your questions, please read this article.
Understanding and using APPLY, (I) and (II) Paul White
Hidden RBAR: Triangular Joins / The "Numbers" or "Tally" Table: What it is and how it replaces a loop Jeff Moden
Exploring Recursive CTEs by Example Dwain Camps
edalatfeizi
edalatfeizi
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no it's just

DECLARE @X INT;
SET @X =12;


ChrisM@Work
ChrisM@Work
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edalatfeizi (5/9/2013)
no it's just

DECLARE @X INT;
SET @X =12;



What are you using as your client?

“Write the query the simplest way. If through testing it becomes clear that the performance is inadequate, consider alternative query forms.” - Gail Shaw

For fast, accurate and documented assistance in answering your questions, please read this article.
Understanding and using APPLY, (I) and (II) Paul White
Hidden RBAR: Triangular Joins / The "Numbers" or "Tally" Table: What it is and how it replaces a loop Jeff Moden
Exploring Recursive CTEs by Example Dwain Camps
John Mitchell-245523
John Mitchell-245523
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You need to run the two statements as one batch, since a variable will only "live" until the end of the batch.

John
Grant Fritchey
Grant Fritchey
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You sure there's not something else at work here? I just tested your code and it's working fine. There's no intervening code of any kind?

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Your code run as a batch should work.

I think what you are probably doing is highlighting and running the statements individually which would reproduce the error you are getting.
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