Jack

Looks the issue is caused by the default case of switch when running tidbEncoder.appendSQL. 

Many thanks for you elaboration, learn a lot from you. By reference to https://dba.stackexchange.com/questions/80727/converting-falsestring-to-falseboolean-during-load-data-local-infile, it propose below solution. This is just for your reference. ``` LOAD DATA LOCAL INFILE 'file1'...