Multiple rows from MySQL query saved in an array structure

Norah Jones nh.jones01 at
Wed Mar 20 13:52:40 CET 2013

I  have this Python code:

    self.lock_tables("read", ['nets_permissions as n', 'devices_permissions as d'])
    usrs = self.db.get("SELECT n.user_id FROM nets_permissions as n \
                        left join devices_permissions as d \
                        on n.user_id = d.user_id \
                        where d.user_id is null \
                        and n.network_id=%s and n.perm3", netid)
    for usr in usrs:
        self.lock_tables("write", ['devices_permissions'])
        self.db.execute("INSERT devices_permissions SET \
                         user_id=%s, network_id=%s, device_id=%s, perm=%s",\
                         usr, netid, sensid, perm)

I first do a query to retrieve some user_id from two tables. I want save this user_id in one variable and after do a for loop to insert this records in another table...

    This code doesn't work. I obtain this error:    
    Exception: Multiple rows returned for Database.get() query

How can I retrieve this multiple rows and then process everyone of them at one time?

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