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NULL should not be compared directly

  • Bug
  • Major

Rule description

  • NULL should not be compared directly

 

Non-compliant Code Example 

SELECT Product.ProductID,  
Product.Name,
Color  
FROM Production.Product  
WHERE ListPrice = NULL; --Non compliant code (Column is directly compared with NULL)

Compliant Code Example

SELECT Product.ProductID,  
Product.Name,
Color  
FROM Production.Product  
WHERE ListPrice Is NULL; --Compliant code
Visual Expert 2020
 VETSQLRULE17