Story 17.6 — Known Limitations & Roadmap MD mirror (honest BI-tool gap framing) — elasticsql#141
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Story 17.6 — Known Limitations & Roadmap MD mirror (honest BI-tool gap framing) — elasticsql#141fupelaqu wants to merge 2 commits into
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…raming) Story 17.6 (Epic 17, Layer 0). MD mirror of the canonical web /known-limitations/ page: exactly what SQL works in R1, what's coming in R2a/R2b/R3+, and the per-tool BI workaround (Tableau / Power BI / Looker / Metabase) for the subquery/CTE gap. Token-for-token parity with the web MDX. Every works/does-not-work claim verified against release-r1 source. - NEW documentation/sql/known_limitations.md - UPDATE documentation/sql/README.md: index link after DQL Support - Inbound one-liners on documentation/sql/dql_statements.md and documentation/client/arrow_flight_sql.md - Outbound links to joins.md (17.1) and ../client/federation_operator_guide.md (16.6/17.2) forward-declared until those targets land on release-r1 Closed Issue #139 Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This was referenced Jun 25, 2026
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Epic 17 (R1 Documentation & Marketing), Story 17.6 — Layer 0. Closes #139.
MD mirror (dual-docs-sync) of the canonical web Known Limitations & Roadmap page (softclient4es-web PR #17 / issue #15). Token-for-token parity with the web MDX.
Changes
documentation/sql/known_limitations.md([Back to index](README.md)+# Known Limitations & RoadmapH1)documentation/sql/README.md— index link after DQL Supportdocumentation/sql/dql_statements.mdanddocumentation/client/arrow_flight_sql.mdAccuracy
Every "works"/"does NOT work" claim re-verified against
origin/release-r1parser source:FromParser.scala:43-49); UNION ALL token only, no bare UNION (operator/package.scala:77); IN-literal-only (WhereParser.scala:240-242); Exists commented out (cond/package.scala:53); all 8WITHkeywords non-CTE; NTILE/LAG/LEAD zero hits;Exceptis projection-exclusion not set operator (Select.scala:118-120); Epic-14 functions present (aggregate/package.scala).SELECT * EXCEPT(cols)projection (works) vsEXCEPTset operator (does not); NTILE/LAG/LEAD are positional/tiling, NOT "percentile-distinct".Forward-declared (NOT live yet)
joins.md(17.1) and../client/federation_operator_guide.md(16.6/17.2) — targets not onrelease-r1; plain text +<!-- pending -->comment. Launch gate (17.8) strips markers once merged.Web-only carve-out (A3)
DBeaver/Superset/Grafana have no
documentation/MD twin → intentionally web-only; MD inbound links land only on the existing SQL/client twins (dql_statements.md,arrow_flight_sql.md).🤖 Generated with Claude Code