Counts the number of rows in a table or group for which all given conditions are true.
CountIf(condition 1, ...)
condition 1 (required) The condition to test. If the condition is true, then the row will be counted.
condition 2+ (optional) Additional conditions to test. If multiple conditions are given, they must all be True in order to be counted
CountIf([Age] > 65)
- Count rows where Age is greater than 65
- Count rows where age is greater than 65 and Gender indicated is Female.