Hacking PostgreSQL

Final Code

PostgreSQL Subsystems

Hacking the PostgreSQL Way

From an Idea..

Parser Changes

Command Code Changes

Where is the parser?

The parser is in src/backend/parser

In that directory are:

scan.l - Lexer, handles tokenization

gram.y - Definition of the grammar

parse*.c - Specialized routines for parsing things

analyze.c - Tranforms raw parse tree into a Query

scansup.c - Support routines for the lexer