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Yuzviak 6ff14a1a7d chore: import .claude command skills, CLAUDE.md, .gitignore, next_steps.md
- Vendor local .claude/ command skills (autopilot, plan, implement, etc.)
- Add CLAUDE.md pointing slash commands to .claude/commands/*/SKILL.md
- Untrack docs-Lokal/ and ignore .planning/ for local-only planning docs
- Include next_steps.md pulled from upstream

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-16 21:39:43 +03:00

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---
description: "SQL and database migration conventions: naming, safety, parameterized queries, indexing, Postgres"
globs: ["**/*.sql", "**/migrations/**", "**/Migrations/**"]
---
# SQL / Migrations
- Use lowercase for SQL keywords (or match project convention); snake_case for table/column names
- Every migration must be reversible (include DOWN/rollback)
- Never rename tables or columns without explicit confirmation — prefer additive changes
- Use parameterized queries; never concatenate user input into SQL
- Add indexes for columns used in WHERE, JOIN, ORDER BY
- Use transactions for multi-step data changes
- Include `NOT NULL` constraints by default; explicitly allow `NULL` only when needed
- Name constraints explicitly: `pk_table`, `fk_table_column`, `idx_table_column`
- Test migrations against a copy of production schema before applying