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Diagnose slow queries and add the right indexes — read the query plan, index for filters/joins/sorts, avoid over-indexing.
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
Write a blameless incident postmortem — timeline, impact, root cause, and concrete follow-ups, focused on systems not people.
Write clear, conventional git commit messages — type(scope): summary, imperative mood, a body that explains the why.
Build small, secure container images — pinned base, non-root user, multi-stage builds, no secrets in layers, minimal attack surface.
Control and query Home Assistant through the connector's call_service tool — REST API patterns, common domains, how to find entities before acting.
Design predictable REST APIs — noun resources, correct status codes, pagination, consistent errors, and versioning.
Handle API keys, tokens and passwords safely — store them in the vault, reference by name, never in chat, repo, memory, or code.
SOC 職業分類に基づく
| name | sql-index-review |
| description | Diagnose slow queries and add the right indexes — read the query plan, index for filters/joins/sorts, avoid over-indexing. |
| category | Data |
| tags | sql, database, performance, indexing |
A query is slow, or before shipping a query that runs hot.
EXPLAIN (ANALYZE, BUFFERS) (Postgres) / EXPLAIN (MySQL). Look
for Seq Scan / full table scan on big tables, and rows estimated ≫ rows returned.WHERE, JOIN ... ON,
and ORDER BY. A composite index follows the column order of the predicate
(equality columns first, then the range/sort column).INCLUDE (...) in Postgres) — no heap fetch.WHERE (WHERE lower(email)=…) unless you
built a matching expression index — it defeats the index.Add the index that turns the most expensive Seq Scan in your hottest query into an index scan; verify with EXPLAIN before and after.