### Before: return errors when tvf queries an empty file or an error uri: 1. get parsed schema failed, empty csv file 2. Can not get first file, please check uri. ### Now: we just return empty set when tvf queries an empty file or an error uri. ```sql mysql> select * from s3( "uri" = "https://error_uri/exp_1.csv", "s3.access_key"= "xx", "s3.secret_key" = "yy", "format" = "csv") limit 10; Empty set (1.29 sec) ```