Added
Support INSERT with all default values
Table.insert() with no values now emits INSERT INTO t DEFAULT VALUES, useful when every column has a database or SQLAlchemy default. Combines with .returning() and .on_conflict_do_nothing() on Postgres/SQLite.
MyTable.insert().returning('id').render()
# ('INSERT INTO mytable DEFAULT VALUES RETURNING id', [])MySQL note: DEFAULT VALUES is not valid MySQL syntax. Combining empty values with .on_duplicate_key_update() raises ValueError.
See commit 8148264 for full details.