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Support scalar functions pushdown to Duckdb with LIMIT. #8764

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#8943
duckdb/duckdb
#24122
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Support scalar functions pushdown to Duckdb with LIMIT.#8764
#8943
duckdb/duckdb
#24122
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myrrc
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ext/duckdbRelates to the DuckDB integrationtracking-issueShared implementation context for work likely to span multiple PRs.

Description

@myrrc
myrrc
opened on Jul 15, 2026

As an example, SELECT array_length("GT") FROM statpopgen LIMIT 1 produces
PROJECTION -> STREAMING_LIMIT -> READ_VORTEX query plan which breaks pushdown because
we don't have a PROJECTION -> GET chain.

We need to support this in scalar function pushdown pass and upstream it.

Activity

  1. myrrc
    self-assigned this
    on Jul 15, 2026
  2. myrrc
    added
    tracking-issueShared implementation context for work likely to span multiple PRs.
    on Jul 15, 2026
  3. myrrc
    added a parent issue on Jul 15, 2026
  4. myrrc
    added
    ext/duckdbRelates to the DuckDB integration
    on Jul 15, 2026
  5. myrrc
    added
    tracking-issueShared implementation context for work likely to span multiple PRs.
    and removed
    tracking-issueShared implementation context for work likely to span multiple PRs.
    on Jul 23, 2026
  6. myrrc
    linked a pull request that will close this issueduckdb: pushdown expressions with LIMIT #8943on Jul 24, 2026
  7. myrrc
    linked a pull request that will close this issuepush down scalar functions for queries with LIMIT #24122on Jul 24, 2026
  8. myrrc
    added a commit that references this issue on Jul 24, 2026

    duckdb: pushdown expressions with LIMIT (#8943)

    03ca2ed
  9. myrrc
    closed this as completedin #8943on Jul 24, 2026
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