refactor: Initialize countPositive with a default value of 0 in Analy…

…ticsDatabaseService

This commit modifies the AnalyticsDatabaseService by initializing the countPositive variable with a default value of 0 when the strResult is null or undefined. This change ensures that countPositive is always assigned a value, even when there is no valid strResult.

The modification improves the reliability of the countPositive variable and prevents potential errors when using it in subsequent calculations.

Co-authored-by: [Author Name]

CommonServer/Services/AnalyticsDatabaseService.ts

@@ -154,7 +154,7 @@ export default class AnalyticsDatabaseService<
         dbResult.stream,
       );
 
-      let countPositive: PositiveNumber = new PositiveNumber(strResult);
+      let countPositive: PositiveNumber = new PositiveNumber(strResult || 0);
 
       if (countBy.groupBy && Object.keys(countBy.groupBy).length > 0) {
         // this usually happens when group by is used. In this case we count the total number of groups and not rows in those groups.