3b8c7d61ece8_.py 文件源码

def upgrade():
    # ### commands auto generated by Alembic - please adjust! ###
    op.drop_constraint('GradeHistory_Work_id_fkey', 'GradeHistory', type_='foreignkey')
    op.create_foreign_key('GradeHistory_Work_id_fkey', 'GradeHistory', 'Work', ['Work_id'], ['id'], ondelete='CASCADE')
    # ### end Alembic commands ###