Cherry-pick: Fix dollar-quoting vs single-quote parsing in SQL files (#945)

[GingerAdonis]

Upstream PR

dimitri#945

Summary

SQL file parser conflated dollar-quoted strings ($$...$$, $A$...$A$) with single-quoted strings. Semicolons inside dollar-quoted blocks were treated as statement terminators. Fix introduces a new parser state :ett (Eat Tag-Quoted Text) to distinguish the two.

Files

• src/utils/read-sql-files.lisp

Notes

• Medium risk — parser state machine change, +14/-10 lines
• Fixes upstream READ-QUERIES broken for -- ';' in input dimitri/pgloader#944
• Priority: Medium