postgresql syntax reference

SKILL.md

Use this skill when you need to understand PostgreSQL's SQL syntax, DDL statement structure, or how PostgreSQL parses specific SQL constructs. This is essential for correctly parsing SQL files and generating valid DDL in pgschema.

Main parser directory: https://github.com/postgres/postgres/blob/master/src/backend/parser/

| Statement Type | gram.y Section | parseutilcmd.c Function |

參考 PostgreSQL 的解析器和語法（gram.y），了解實現 pgschema 功能時的 SQL 語法、DDL 語句結構和解析規則 來源：microck/ordinary-claude-skills。

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