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MySQL Worklogs are design specifications for changes that may define past work, or be considered for future development.

WL#8063: True bottom-up server parser: refactoring of the LOAD statement

Affects: Server-8.0 — Status: Complete

Description
Requirements
High Level Architecture
Low Level Design

This WL is intended to refactor LOAD DATA/XML statement grammar rules in a pure bottom-up style to make it context-independent for the better maintainability and extendibility.

Functional requirements

N/A

Non-functional requirements

NF-1: No performance degradation is expected.

User Documentation

No user-visible changes. No documentation required.

New classes

Class name	Description
PT_load	Parse tree root for `LOAD DATA/XML`
Sql_cmd_load	Command class for `LOAD DATA/XML`

Removal of unneeded "global" variables

LEX::exchange
LEX::load_field_list
LEX::load_update_list
LEX::load_value_list
LEX::load_set_str_list
LEX::local_file