[GitHub] [arrow] alamb opened a new pull request #7905: ARROW-9656: [Rust] [DataFusion] Better error messages for unsupported EXTERNAL TABLE types

Wed, 05 Aug 2020 07:51:39 -0700 


alamb opened a new pull request #7905:
URL: https://github.com/apache/arrow/pull/7905


   Previously, the error message for an invalid CREATE EXTERNAL TABLE command 
told the user there was a problem but not how to fix it. This PR improves the 
error message and adds some parser tests.
   
   Before this PR:
   
   ```
   CREATE EXTERNAL TABLE repro
   STORED AS ARROW
   LOCATION 'repro.arrow';
   
   ParserError(ParserError("Expected fileformat, found: ARROW"))
   ```
   
   
   After this PR:
   ```
   CREATE EXTERNAL TABLE repro
   STORED AS ARROW
   LOCATION 'repro.arrow';
   
   ParserError(ParserError("Expected one of PARQUET, NDJSON, or CSV, found: 
ARROW"))
   ```
   


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