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ClickHouse type sizing, Nullable, LowCardinality, codec, compression, and column storage guidance.
用 Codex 或 Claude 帮你安装 复制这段 Prompt，粘贴到 Codex、Claude 或其他助手里，让它检查 Skill 页面并帮你完成安装。
基于 SOC 职业分类
Rules and strategies for exploring databases, tables, schemas, and searching metadata.
Complex rules for calling render_chart, inferring axes, and choosing chart types based on user intent.
Diagnose a ClickHouse server error (code/name/exception) and give a concrete, actionable fix.
Diagnose part/partition health of a MergeTree table — too many parts, slow/stuck merges, bad partition key.
Rules for using explain/analyze/optimize tools to help the user tune their queries.
Diagnose a column/table schema issue — Nullable overhead, oversized integer, or weak compression — and propose an ALTER.
| name | types-codecs-compression |
| description | ClickHouse type sizing, Nullable, LowCardinality, codec, compression, and column storage guidance. |
Use this skill when diagnosing wasteful schemas, poor compression, oversized integer types, Nullable overhead, LowCardinality opportunities, or codec choices.
Read reference.md before proposing schema changes or ALTER TABLE statements related to data types and codecs.
