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select extract(epoch from ('15 minutes')::interval) gives wrong result #19799

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#19807
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select extract(epoch from ('15 minutes')::interval) gives wrong result#19799
Bug
#19807
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bugSomething isn't working

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@adriangb
adriangb
opened on Jan 14, 2026

Describe the bug

Run select extract(epoch from ('15 minutes')::interval); gives 0.0 in datafusion-cli, 900.0 in DuckDB and Postgres.

To Reproduce

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Expected behavior

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Activity

  1. adriangb
    added
    bugSomething isn't working
    on Jan 14, 2026
  2. adriangb
    added the
    Bug
    issue type on Jan 14, 2026

  3. lemorage commented on Jan 14, 2026

    @lemorage
    lemorage
    on Jan 14, 2026
    Contributor

    take this

  4. github-merge-queue
    added a commit that references this issue on Jan 16, 2026

    fix: calculate total seconds from interval fields for `extract(epoch)` (

    5edda9b
  5. adriangb
    closed this as completedin #19807on Jan 16, 2026
  6. de-bgunter
    added a commit that references this issue on Mar 24, 2026

    fix: calculate total seconds from interval fields for `extract(epoch)` (

    20980a5
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