Must Declare Scalar Variable Error, in SSRS

Must Declare Scalar Variable Error, in SSRS

There are various circumstances that may result in a "must declare the scalar variable" error when you try to run a report.

If you know of other circumstances and the associated workarounds, please contribute this information to this article.

Must Declare Scalar Variable Error and Multi-Value Parameters

When you create a multi-value parameter for a report, you add a variable to the dataset query. The text for the query variable must include the IN operator, as shown in the following example.

WHERE
  Production.ProductInventory.ProductID IN (@ProductID)

If you don’t include the parentheses around the variable as shown above, the report fails to render and the “must declare the scalar variable” error is displayed.

 
Leave a Comment
  • Please add 6 and 7 and type the answer here:
  • Post
Wiki - Revision Comment List(Revision Comment)
Sort by: Published Date | Most Recent | Most Useful
Comments
Page 1 of 1 (1 items)
Wikis - Comment List
Sort by: Published Date | Most Recent | Most Useful
Posting comments is temporarily disabled until 10:00am PST on Saturday, December 14th. Thank you for your patience.
Comments
Page 1 of 1 (1 items)