[coverage] Conformance findings: METADATA-037

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
48/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Quiet
Tech stack
sql, typescript
Domain
api, databases

Research direction

Start with the getColumns path in databricks-sql-nodejs and the METADATA-037 expected-failure described in the coverage PR; compare its SEA result with the Thrift result and read the reference driver PR for context. Done means a bare "%" catalog filter returns the fixture table's columns on SEA instead of zero rows, with the conformance test passing.

Written by the indexing model from the issue text.

Description

Surfaced by the multi-language coverage fan-out while conformance-testing these SPEC-IDs against databricks/databricks-sql-nodejs.

Each is committed as an expected-failure (xfail) test in the coverage PR — the test asserts the CORRECT behavior and stays red until this driver is fixed.

  • METADATA-037: SEA/kernel path does not expand a bare "%" catalog filter to match-all: getColumns(catalogName:'%', fixture schema+table) returns 0 rows on SEA vs the fixture table's columns on Thrift, because the catalog is forwarded as a literal identifier (cross-protocol row-set divergence, same class as ADBC issue 593)

Reference driver PR: https://github.com/adbc-drivers/databricks/pull/594
Coverage PR (reproducing xfail tests): https://github.com/databricks/databricks-driver-test/pull/1009

Dominant language
TypeScript
Stars
36
Forks
50
Avg merge
13h 46m
Merged PRs (30d)
9

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