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2026-09-27 - Output Names With Multiple AS Keywords Parsed Correctly

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AgileData.io - Cleaner Parsing: Complex Expressions No Longer Confuse Output Names

When a rule’s output expression contained more than one AS keyword, for example CAST(x AS STRING) AS customer_code, the rule parser could pick up the wrong part of the expression as the output column name. This produced incorrect column names or rules that failed to parse.

The parser now uses the final AS as the output alias, so expressions containing casts and other AS clauses resolve to the name you intended.

What was happening:

  • Output names taken from the wrong AS in expressions such as casts

  • Unexpected column names or parse failures on otherwise valid rules

What this means for you:

  • Write natural SQL expressions without workarounds

  • Output columns named exactly as you specified

Last Refreshed

Doc Refreshed: 2026-10-21

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