Counting no of rows a particular column of a .csv file


Could you please help me that how to know number of a rows in a particular column in a .csv file.
i have suppose 10 columns and each columns has different number of rows how to find each now of rows in each column in a .csv file.

I am having the same issue. Where you able to resolve this? It seems when I used read column and I specify a specific column it still counts the rows from other columns and will give me the result of the column with the highest total number of rows.