1. Error Messages:
MariaDB [baidd]> select * from t1 into outfile '/var/lib/mysql/t1.txt'; Query OK, 1 row affected (0.000 sec MariaDB [baidd]> load data infile '/var/lib/mysql/t1.txt' into table t2; ERROR 1261 (01000): Row 1 doesn't contain data for all columns
2. Reason
t2 has more fields than t1, so the import fails.
t2 has more fields than t1, so the import fails.