Why is peewee including the 'id' column into the mysql select query?

Question

I am trying to learn how to use peewee with mysql.

I have an existing database on a mysql server with an existing table. The table is currently empty (I am just testing

Answer 1

Most simple active-record pattern ORMs need an id column to track object identity. PeeWee appears to be one of them (or at least I am not aware of any way to not use an id). You probably can't use PeeWee without altering your tables.

Your existing table doesn't seem to be very well designed anyway, since it appears to lack a key or compound key. Every table should have a key attribute - otherwise it is impossible to distinguish one row from another.

If one of these columns is a primary key, try adding a primary_key=True argument as explained in the docs concerning non-integer primary keys

date = DateField(primary_key=True)

If your primary key is not named id, then you must set your table's actual primary key to a type of "PrimaryKeyField()" in your peewee Model for that table.

You should investigate SQLAlchemy, which uses a data-mapper pattern. It's much more complicated, but also much more powerful. It doesn't place any restrictions on your SQL table design, and in fact it can automatically reflect your table structure and interrelationships in most cases. (Maybe not as well in MySQL since foreign key relationships are not visible in the default table engine.) Most importantly for you, it can handle tables which lack a key.