External File Format | CREATE FOREIGN TABLE | VantageCloud Lake - External File Object Rules - Teradata Vantage

Teradata® VantageCloud Lake
Deployment
VantageCloud
Edition
Lake
Product
Teradata Vantage
Published
January 2023
ft:locale
en-US
ft:lastEdition
2024-12-11
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phg1621910019905.ditamap
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pny1626732985837.ditaval
dita:id
phg1621910019905
External files must be in one of the following formats:
  • JSON
  • CSV
  • Parquet

Field names in CSV and JSON are case sensitive.

Unsupported files and compression types are skipped.

Records that contain errors are skipped. Errors can include mismatched quotation marks (" "), embedded line feeds, and so forth.

External files with UTF-8 BOMs (Byte Order Markers) are supported, but UTF-16LE, UTF-16BE, UTF-32LE, UTF-32BE BOMs are not supported.

Queries return results only for file formats where the format matches the format of the first file specified by the LOCATION option, including:
  • File type (JSON, CSV, or Parquet)
  • File compression (GZIP for JSON or CSV, SNAPPY for Parquet, or uncompressed)
  • Character encoding (LATIN or UTF-8)
  • Field delimiter (comma, tab, and so on)
  • Record delimiter (line feed)