I follow this link https://www.taosdata.com/cn/documentation/taos-sql#insert, what I have tried is the following command:
insert into TD_D019 FILE /root/TD_D019.csv
insert into TD_D01986 file '/root/TD_D01986.csv'
Unfortunately, I got the following errors ordinally:
DB error: syntax error near '/root/td_d019.csv;' (file path is required following keyword FILE) (0.001806s)
DB error: Syntax error in SQL (0.000125s)