Bala Krishna Commented 2 Months ago through
Blogs | 1 Point
@Riks,
There are 2 things to observe.
1. If we use COUNT(CASE WHEN gender='M' THEN 1 ELSE 0 END) , RESULT= COUNT(CONDITIONAL PART + ELSE PART) that means like COUNT(*)
2. If we use SUM(CASE WHEN gender='M' THEN 1 ELSE 0 END) , RESULT= COUNT(CO...