yellowjacket/.planning/phases/06-sql-consolidation-code-quality/06-03-SUMMARY.md

phase, plan, subsystem, tags, requires, provides, affects, tech-stack, key-files, key-decisions, patterns-established, requirements-completed, duration, completed

phase	plan	subsystem	tags	requires	provides	affects	tech-stack	key-files	key-decisions	patterns-established	requirements-completed	duration	completed
06-sql-consolidation-code-quality	03	database	sqlite sqlc fts5 sql-safety code-quality	phase provides 06-sql-consolidation-code-quality track_metadata VIEW for sqlc query migration	sqlc-generated LookupTrackMetaByPaths query with sqlc.slice() SAFETY comments on all 12 hand-crafted SQL statements	07-performance-startup-optimization	added patterns sqlc.slice() for variable-length IN clauses SAFETY comment convention for hand-crafted SQL	created modified backend/database/sql/queries/audio_files.sql backend/database/sql/sqlcgen/audio_files.sql.go backend/queue/persistence.go backend/database/search.go backend/library/library.go backend/library/rescan.go	Used sqlc.slice() with track_metadata VIEW for type-safe batch lookups Preserved chunking at maxSQLiteVars=900 since sqlc.slice() does not auto-chunk Two-part SAFETY comment format: why sqlc can't handle it + what makes it safe	SAFETY comment convention: // SAFETY: [reason sqlc can't handle] + [safety assurance] Cross-reference pattern: library.go/rescan.go SAFETY comments reference search.go canonical implementations	QUAL-03 QUAL-04	6min	2026-03-05

Phase 6 Plan 3: SQL Consolidation — lookupChunk Migration & SAFETY Comments Summary

Migrated queue lookupChunk from fmt.Sprintf IN clause to sqlc-generated LookupTrackMetaByPaths query via track_metadata VIEW, and documented all 12 hand-crafted SQL statements with // SAFETY: comments

Performance

• Duration: 6 min
• Started: 2026-03-05T00:27:52Z
• Completed: 2026-03-05T00:34:10Z
• Tasks: 2
• Files modified: 7

Accomplishments

• Replaced hand-crafted fmt.Sprintf IN clause in lookupChunk with sqlc-generated LookupTrackMetaByPaths query using sqlc.slice() and track_metadata VIEW
• Added // SAFETY: comments to all 12 hand-crafted SQL statements across 4 files (7 in search.go, 3 in library.go, 1 in rescan.go, 1 in persistence.go)
• All existing tests pass unchanged: database (15), library (13), queue (29) — all with -race
• Zero hand-crafted SQL in lookupChunk; the only remaining hand-crafted SQL in queue is insertTrackBatch (documented with SAFETY comment)

Task Commits

Each task was committed atomically:

1. Task 1: Migrate lookupChunk to sqlc with sqlc.slice() - 2221a68 (feat)
2. Task 2: Add SAFETY comments to all hand-crafted SQL - 7dfe003 (docs)

Files Created/Modified

• backend/database/sql/queries/audio_files.sql - Added LookupTrackMetaByPaths query using track_metadata VIEW
• backend/database/sql/sqlcgen/audio_files.sql.go - sqlc-generated Go code for LookupTrackMetaByPaths
• backend/queue/persistence.go - lookupChunk now uses sqlc query; insertTrackBatch has SAFETY comment
• backend/database/search.go - 7 SAFETY comments on all FTS5 operations
• backend/library/library.go - 3 SAFETY comments on FTS5 INSERT/DELETE in commitNewAudioFile and updateAudioFileMetadata
• backend/library/rescan.go - 1 SAFETY comment on FTS5 DELETE in clearAllLibraryData

Decisions Made

• Used sqlc.slice() with track_metadata VIEW — the VIEW already provides the exact columns needed (id, file_path, title, artist_name), eliminating the need for an inline JOIN
• Preserved lookupTrackMetaBatch chunking at maxSQLiteVars (900) because sqlc.slice() does NOT auto-chunk large parameter lists
• Two-part SAFETY comment format: (1) why sqlc can't handle it, (2) what makes the query safe — makes it clear these are intentional exceptions, not oversights
• Cross-references in library.go/rescan.go point back to canonical search.go implementations to avoid divergent documentation

Deviations from Plan

None - plan executed exactly as written.

Issues Encountered

None

User Setup Required

None - no external service configuration required.

Next Phase Readiness

• Phase 6 complete: all 3 plans executed (VIEW consolidation, event codegen, SAFETY comments)
• All hand-crafted SQL documented; future maintainers can see why each exception exists
• Ready for Phase 7 (performance/startup optimization)

Self-Check: PASSED

All created/modified files exist on disk. All commit hashes verified in git log.

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Phase: 06-sql-consolidation-code-quality Completed: 2026-03-05