The Difference between ‘Count’ and ‘Count(*)’
‘Count’: Counts the number of non-null values.‘Count(*)’: Counts the number of rows in the table, including null values and duplicates.
‘Count’: Counts the number of non-null values.‘Count(*)’: Counts the number of rows in the table, including null values and duplicates.
It is often necessary to get a list of values from multiple rows. Generally, this is done using the cursor, which tends to make the task more complicated.I tried to