[GitHub] [arrow-datafusion] liningpan commented on issue #1736: Files without `.parquet`, `.csv` extension inferred as having no schema

["liningpan (via GitHub)" <gi...@apache.org>]

liningpan commented on issue #1736:
URL: https://github.com/apache/arrow-datafusion/issues/1736#issuecomment-1505811924

   I also ran into this issue. The problem seems to be even if only a single file is provided, we still try to match by extension. 
   
   https://github.com/apache/arrow-datafusion/blob/0e5f6df2c4fb2d647874102a19c74eaaf7f34d98/datafusion/core/src/datasource/listing/url.rs#L143-L175
   
   If my use case always uses a single csv file for each table, would a reasonable workaround be setting file extension to an empty string in `CsvReadOptions`? Are there any problems?
   
   ```rust
   ctx.register_csv(
       name,
       path,
       CsvReadOptions::new().file_extension("")
   ).await?
   ```


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