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Author SHA1 Message Date
Simon Willison
577f3011e5 Create tables with compound foreign keys, refs #594 
create_table() and friends now accept compound foreign keys, specified
as lists of column names in the existing tuple forms:

    foreign_keys=[
        (["campus_name", "dept_code"], "departments"),
        (["campus_name", "dept_code"], "departments", ["campus_name", "dept_code"]),
    ]

The two-item form guesses the compound primary key of the other table.
Compound keys are rendered as table-level FOREIGN KEY constraints,
while single-column keys keep their inline REFERENCES clauses.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
 2026-07-05 14:30:41 -07:00
Simon Willison
d5bf51df35 Fix TypeError when sorting mixed compound/single foreign keys 
sorted() on a foreign_keys list containing both compound (column=None)
and single-column ForeignKeys raised TypeError because dataclass
ordering compared None against str. column/other_column are now
excluded from comparison - ordering and equality use the always
populated columns/other_columns lists instead.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
 2026-07-05 14:26:56 -07:00
Simon Willison
f10459cffb table.foreign_keys now handles compound foreign keys, refs #594 
This is a breaking change, since the return type is now a dataclass
and not a namedtuple.
 2026-07-05 13:59:25 -07:00