Xueersi Online School Tech Team
Aug 21, 2020 · Databases
Understanding MySQL SQL Parsing: Yacc Grammar, Parse Trees, and Call Stacks
This article explains how MySQL parses SQL statements using Yacc, detailing the grammar structure, definition and rule sections, relevant source files, parse‑tree node declarations, common error messages, and the call stacks involved in both parsing and pre‑parsing phases.
Database InternalsParse TreeSQL parsing
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