Aditya Manthramurthy 41a9d1d778 Fix S3Select SQL column reference handling (#11957)
This change fixes handling of these types of queries:

- Double quoted column names with special characters:
    SELECT "column.name" FROM s3object
- Double quoted column names with reserved keywords:
    SELECT "CAST" FROM s3object
- Table name as prefix for column names:
    SELECT S3Object."CAST" FROM s3object
2021-04-06 12:40:28 -07:00
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