[luthermonson]

MySQL statement shapes that PHP apps (Sendy among them) send and that SQLite rejects as written. Each was verified over the MySQL wire against rusqlite and Turso: crates/litewire/tests/mysql_compat_statements.rs checks results and affected-row counts, not the emitted SQL.

MySQL	Now
INSERT ... SELECT ... FROM DUAL WHERE NOT EXISTS (...)	FROM DUAL dropped. 1 affected row when inserted, 0 when suppressed (mysqli_affected_rows is branched on). A quoted or aliased dual is kept as a user table
FORCE / USE / IGNORE INDEX|KEY [FOR JOIN|ORDER BY|GROUP BY] (...)	removed. Never mapped to INDEXED BY, which errors when the index is missing
FOR UPDATE, FOR SHARE, NOWAIT, SKIP LOCKED, LOCK IN SHARE MODE	removed, rows returned. LOCK IN SHARE MODE is stripped before parsing because sqlparser cannot parse it. Single-writer semantics are documented: a double "claim" fails at the second write rather than blocking
LIMIT 18446744073709551615 [OFFSET n] / LIMIT n, 18446744073709551615 (any literal ≥ 2^63)	LIMIT -1
ALTER TABLE t ROW_FORMAT=… / ENGINE=… / [DEFAULT] CHARSET … / COLLATE … / AUTO_INCREMENT=… / COMMENT … / CONVERT TO CHARACTER SET … / ENABLE|DISABLE KEYS / FORCE / ALGORITHM= / LOCK= (options only, comma- or space-separated)	no-op. If mixed with a real operation, the statement goes to the parser
LEAST / GREATEST / CHAR_LENGTH / CHARACTER_LENGTH	min / max (multi-arg, NULL if any NULL) / length

Fix: the DDL display-width pre-pass and the SELECT-hint pre-pass pushed every byte as a char, so multi-byte UTF-8 was re-encoded (DEFAULT 'café' was stored as 'café', and the same happened to strings in a SELECT SQL_NO_CACHE ...). They also ended a string at a backslash-escaped quote. Both pre-passes now copy byte spans through a shared quote scanner that understands escapes.

Docs: docs/sql-translation.md (MySQL dialect + "what does not work"), CHANGELOG.

Local: clippy (default and all features), +1.88 check, cargo test --workspace --all-features. The only failure is the Windows-only single_tenant_attach path test, which fails on main too.