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Implement FROM-first selects #1713

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merged 3 commits into from
Feb 9, 2025
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mitsuhiko
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This implements "FROM-first" selects. DuckDB and Clickhouse support this syntax where FROM can be placed before SELECT. To disambiguate these cases for formatting I added a new SelectFlavor enum:

  • SelectFlavor::Standard: SELECT *
  • SelectFlavor::FromFirst: FROM ... SELECT *
  • SelectFlavor::FromFirstNoSelect: FROM ... (implied SELECT)

I'm not sure if this is the right approach.

Refs #1400

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@iffyio iffyio left a comment

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LGTM! Thanks @mitsuhiko!
cc @alamb

tests/sqlparser_duckdb.rs Outdated Show resolved Hide resolved
@iffyio iffyio merged commit 46cfcfe into apache:main Feb 9, 2025
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@mitsuhiko mitsuhiko deleted the feature/from-first branch February 9, 2025 18:46
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