[GitHub] [iceberg] luoyuxia commented on issue #7110: Support to read iceberg table's metadata column with Flink

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

luoyuxia commented on issue #7110:
URL: https://github.com/apache/iceberg/issues/7110#issuecomment-1475532560

   Thanks all for the information. Now I got it. Maybe the issue's title is not clear.  Now I change the title from `Support to read iceberg table's metadata with Flink` to `Support icberge table's metadata column`.
   
   What I mean is that we can implemet `SupportsReadingMetadata`  for `IcebergTableSource` just like `SparkTable` implements `SupportsMetadataColumns`.  So that user can use such Flink SQL to know which file the row comes from by the column `file_path`.
   ```
   CREATE TABLE icberg_t(
      id STRING,
      file_path STRING METADATA
   ) with
    ('connector' = 'iceberge', xxx);
   
   SELECT  id, file_path FROM icberg_t;
   ```
   


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