SELECT auto_increment FROM information_schema.tables WHERE table_name = 'aaa' ;
ALTER TABLE aaa AUTO_INCREMENT = 1 ;
SELECT auto_increment FROM information_schema.tables WHERE table_name = 'aaa' ;
ALTER TABLE aaa AUTO_INCREMENT = 1 ;
mysqldump -hhostname -uusername -ppassword dbname table1 table2 table3 > dump.sql 2> err.txt