How to know which rows were skipped after loading data file in MySQL

Question

After executing the following command

LOAD DATA LOCAL INFILE '/path/to/file.csv'     
     INTO TABLE  mydb.tablename FIELDS TERMINATED BY ',';

mysql workbench's output console printed the following:

14935 row(s) affected Records: 14981 Deleted: 0 Skipped: 46

Warnings: 0

The question is, how on earth do I find out which rows were skipped?