Loading csv or delimited data files to MySQL database is a very common task frequently questioned about and almost everytime LOAD DATA INFILE come into rescue. In this article we will try to understand some of the very common scenarios for loading data into MySQL Database.

Recently while we were building a slave with a newer version of MySQL 5.1 from an InnoDB Hot backup, the following error occurred when we ran "mysql_upgrade":mysql.time_zone OKmysql.time_zone_leap_second OKmysql.time_zone_name OKmysql.time_zone_transition OKmysql.time_zone_transition_type OKmysql.user OKRunning 'mysql_fix_privilege_tables'...ERROR 13 (HY000) at line 311: Can't get stat of './mysql/general_log.CSV' (Errcode: 2)ERROR 13 (HY000) at line 316: Can't get stat of './mysql/slow_log.CSV' (Errcode: 2)FATAL ERROR: Upgrade failedThe problem is that in MySQL 5.1, it is possible to log the slow query log and general log to tables in the "mysql" schema (source: Selecting General Query and Slow Query Log Output Destinations). These tables are  []