Guide PostgreSQL COPY command internals across the four-file split.
npx skills add https://github.com/matejformanek/postgres-claude --skill copy-family
Please help me install this Agent Skill. Skill: copy-family Source: https://github.com/matejformanek/postgres-claude/tree/main/.claude/skills/copy-family Command: npx skills add https://github.com/matejformanek/postgres-claude --skill copy-family
This skill resolves the complexity of navigating PostgreSQL's bulk-load machinery, preventing common errors when extending or debugging the COPY command family.
Use the copy-family skill to analyze the current implementation of the COPY FROM row loop and identify the correct file for adding a new format option.
High-intent search queries and answers about installing and using this skill.
The PostgreSQL COPY command four-file split separates bulk-loading logic across copy.c, copyto.c, copyfrom.c, and copyfromparse.c. Each file handles distinct routing, export, import, and parsing subsystems to ensure patches target the correct internal machinery.
To add new options to the PostgreSQL COPY FROM row loop, you must navigate the four-file split architecture and apply patches to the correct subsystem, ensuring new formats or progress reporting fields integrate safely with existing multi-insert buffer management.
PostgreSQL bulk-load patches break trigger firing mechanisms when modifications to the COPY machinery bypass the backend utility path. You must preserve existing trigger and multi-insert buffer logic when extending the COPY FROM command internals.
The PostgreSQL COPY command integrates with table AMs for partition routing during bulk-loading. Proper integration requires deep knowledge of the backend utility path and multi-insert buffer management to avoid breaking existing trigger firing mechanisms.
The best way to audit PostgreSQL COPY performance is to analyze the bulk-load machinery and multi-insert buffer management within the copyfrom.c and copyfromparse.c subsystems. This identifies bottlenecks in the COPY FROM row processing loop.
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