Question

I been new to using SQL and I’ve been getting an error:

sql construct or statement is not supported

In visual studio each time I execute this statement:

IF (SELECT [Product_Availability] FROM Product WHERE [Product_Name] = @name) = 'True' 
UPDATE [Product] SET [Product_Availability] = 'False' 
WHERE ([Product_Name] = @name) 
ELSE 
UPDATE Product SET [Product_Availability] = 'True' 
WHERE ([Product_Name] = @name)

Though it works despite the error in the query part of visual studio; however, it doesn’t when I call it inside my database handler class. Any help would be appreciated!

Answer 1

Why not simplify to a single statement instead of all these if/else things?

UPDATE dbo.Product_Availability 
  SET Product_Availability = CASE Product_Availability
    WHEN 'True' THEN 'False' ELSE 'True' END
WHERE Product_Name = @name;