Minimizing not-equal-to joins
Not-equal-to joins should be avoided as they result in a full table scan, which can lead to poor performance, especially in large tables.
Example
Using Flag = 'Yes' is more efficient than Flag = 'No', as the latter performs a full table scan, potentially slowing down performance depending on the number of records with Flag = 'No'.
Considerations
This does not mean replacing Not Equal To statements with multiple OR conditions, which could lead to equally inefficient logic.
In such cases, refer to the best practices outlined in the section on "Minimizing Any Joins" for an optimal solution.