The quoting fix was necessary but not sufficient: "column 'op_name' can't have a
default value" persisted.
The translation worked line by line and rewrote only the FIRST column on each
line. Our own migrations put one column per line, so nothing showed there — but
sqlite_master stores a table's CREATE statement with every ALTER-added column
appended to the SAME line, and the baseline is built from exactly that. On a
logbook that had been through upgrades, most columns therefore kept their TEXT
type and MySQL rejected the schema.
Two consequences fixed together: every match is now rewritten, and each one is
decided from ITS OWN declaration — the text between the surrounding commas —
rather than from the whole line. Deciding per line would have made every column
sharing a line with a default-bearing one into VARCHAR(255), which breaches the
InnoDB row-size limit the TEXT rule exists to respect.
Tests cover the many-columns-on-one-line shape and pin that a neighbour's DEFAULT
does not leak.
rouggy
e3aabc06a4