That's it. (postal_code). The ORM query now works from the iPad! Now I need 
to sort things out with Python on the Mac and with MySQL server. Having a 
working example like this helps as I go through the documentation. Thanks 
very much much for your patient assistance. 

On Sunday, August 25, 2019 at 9:35:28 PM UTC-4, Peter Schutt wrote:
>
> HI Ira,
>
> Again, that is an error that originates from inside the database layer and 
> its telling you that one of the columns that you've queried on doesn't 
> exist, which could mean a few things that will be hard for anyone to debug 
> without access to the schema that you are trying to abstract upon. E.g., it 
> could be that there is a column in civicrm_address that is called 
> "postcode" or "postal_code" and so the name that we have defined on the 
> Address class is simply wrong, e.g. Address.postalcode might need to be 
> Address.postal_code, or something else. It is also possible that no such 
> column actually exists in the civicrm_address table in the database, it 
> might be defined on another table, or just not be there at all. Inspecting 
> the result of 'SHOW CREATE TABLE civicrm_address' should provide you with 
> enough detail to work out what is going on.
>
> On Monday, 26 August 2019 10:57:14 UTC+10, Ira Fuchs wrote:
>>
>> Until I can get a new version of the server installed, I decided to try 
>> running this scipt on my iPad using Pythonista. The script now looks like 
>> this:
>>
>> from sqlalchemy import *
>> from sqlalchemy.ext.declarative import declarative_base
>> from sqlalchemy.orm import relationship
>> from sqlalchemy.orm import sessionmaker
>> from sqlalchemy import Column, Integer, String
>> import datetime
>> engine = create_engine('mysql+pymysql://root:pw!@ipaddr:3306/civicrm2')
>> Base = declarative_base()
>> Session = sessionmaker(bind=engine)
>> session = Session()
>>
>> class Contact(Base):
>>     __tablename__ = "civicrm_contact"
>>     id = Column(Integer, primary_key=True)
>>     first_name = Column(String(64, u'utf8_unicode_ci'), index=True)
>>     middle_name = Column(String(64, u'utf8_unicode_ci'))
>>     last_name = Column(String(64, u'utf8_unicode_ci'), index=True)
>>     display_name = Column(String(128, u'utf8_unicode_ci'))
>>                           
>> class Contribution(Base):
>>     __tablename__ = 'civicrm_contribution'
>>
>>     id = Column(INTEGER, primary_key=True)
>>     contact_id = Column(ForeignKey(u'civicrm_contact.id', 
>> ondelete=u'CASCADE'), nullable=False, index=True)
>>     financial_type_id = Column(ForeignKey(u'civicrm_financial_type.id'), 
>> index=True)
>>     contribution_page_id = Column(ForeignKey(u'
>> civicrm_contribution_page.id', ondelete=u'SET NULL'), index=True)
>>     payment_instrument_id = Column(INTEGER, index=True)
>>     receive_date = Column(DateTime, index=True)
>>     non_deductible_amount = Column(DECIMAL(20, 2), 
>> server_default=text("'0.00'"))
>>     total_amount = Column(DECIMAL(20, 2), nullable=False)
>>     fee_amount = Column(DECIMAL(20, 2))
>>     net_amount = Column(DECIMAL(20, 2))
>>     trxn_id = Column(String(255, u'utf8_unicode_ci'), unique=True)
>>     invoice_id = Column(String(255, u'utf8_unicode_ci'))
>>     currency = Column(String(3, u'utf8_unicode_ci'))
>>     cancel_date = Column(DateTime)
>>     cancel_reason = Column(Text(collation=u'utf8_unicode_ci'))
>>     receipt_date = Column(DateTime)
>>     thankyou_date = Column(DateTime)
>>     source = Column(String(255, u'utf8_unicode_ci'), index=True)
>>     amount_level = Column(Text(collation=u'utf8_unicode_ci'))
>>     contribution_recur_id = Column(ForeignKey(u'
>> civicrm_contribution_recur.id', ondelete=u'SET NULL'), index=True)
>>     is_test = Column(Integer, server_default=text("'0'"))
>>     is_pay_later = Column(Integer, server_default=text("'0'"))
>>     contribution_status_id = Column(INTEGER, index=True)
>>     address_id = Column(ForeignKey(u'civicrm_address.id', ondelete=u'SET 
>> NULL'), index=True)
>>     check_number = Column(String(255, u'utf8_unicode_ci'))
>>     campaign_id = Column(ForeignKey(u'civicrm_campaign.id', 
>> ondelete=u'SET NULL'), index=True)
>>     tax_amount = Column(DECIMAL(20, 2))
>>     creditnote_id = Column(String(255, u'utf8_unicode_ci'), index=True)
>>     revenue_recognition_date = Column(DateTime)
>>     invoice_number = Column(String(255, u'utf8_unicode_ci'))
>>
>>     address = relationship(u'CivicrmAddress')
>>     contact = relationship(u'CivicrmContact')
>> class Address(Base):
>>     __tablename__ = "civicrm_address"
>>     id = Column(Integer, primary_key=True)
>>     contact_id = Column(ForeignKey(u'civicrm_contact.id', 
>> ondelete=u'CASCADE'), index=True)
>>     street_address = Column(String(96, u'utf8_unicode_ci'))
>>     city = Column(String(64, u'utf8_unicode_ci'))
>>     postalcode = Column(String(64, u'utf8_unicode_ci'))
>>     state_province_id = Column(String(64))
>>     country_id = Column(ForeignKey(u'civicrm_country.id', ondelete=u'SET 
>> NULL'))
>> class Country(Base):
>>     __tablename__ = "civicrm_country"
>>     id = Column(Integer, primary_key=True)
>>     name = Column(String(64, u'utf8_unicode_ci'))
>> class State(Base):
>>     __tablename__ = "civicrm_state_province"
>>     id = Column(Integer, primary_key=True)
>>     name = Column(String(64, u'utf8_unicode_ci'))
>>     abbreviation = Column(String(4, u'utf8_unicode_ci'))
>>     country_id = Column(ForeignKey(u'civicrm_country.id'))
>> class Entity_Tag(Base):
>>     __tablename__ = "civicrm_entity_tag"
>>     id = Column(INTEGER, primary_key=True)
>>     entity_id = Column(INTEGER, nullable=False, index=True)
>>     tag_id = Column(ForeignKey(u'civicrm_tag.id', ondelete=u'CASCADE'))
>>     
>> s = Session()
>> subquery = (
>>     s.query(Contact.display_name)
>>     .filter(
>>         Contribution.receive_date > datetime.date(2005, 7, 1),
>>         Contribution.contact_id == Contact.id,
>>         Contact.id == Entity_Tag.entity_id,
>>         Entity_Tag.tag_id == 6,
>>     )
>>     .subquery()
>>     )
>> result = (
>>     s.query(
>>         Contact.last_name,
>>         Contact.first_name,
>>         Address.street_address,
>>         Address.city,
>>         Address.postalcode,
>>         State.name,
>>         Country.name.label("country"),
>>     )
>>     .filter(
>>         Contact.id == Entity_Tag.entity_id,
>>         Entity_Tag.tag_id == 6,
>>         Contact.id == Address.contact_id,
>>         Address.state_province_id == State.id,
>>         Address.country_id == Country.id,
>>         Contact.display_name.notin_(subquery),
>>     )
>>     .distinct()
>>     .all()
>> )
>> for row in result:
>>     print(row)
>>
>> and the error Traceback is:
>>
>> Traceback (most recent call last):
>>   File 
>> "/private/var/mobile/Containers/Shared/AppGroup/05D14C00-CCAC-4E98-A3CC-96C6944B8534/Pythonista3/Documents/sqlalchemy-test.py",
>>  
>> line 108, in <module>
>>     Contact.display_name.notin_(subquery),
>>   File 
>> "/private/var/mobile/Containers/Shared/AppGroup/05D14C00-CCAC-4E98-A3CC-96C6944B8534/Pythonista3/Documents/site-packages/sqlalchemy/orm/query.py",
>>  
>> line 2588, in all
>>     return list(self)
>>   File 
>> "/private/var/mobile/Containers/Shared/AppGroup/05D14C00-CCAC-4E98-A3CC-96C6944B8534/Pythonista3/Documents/site-packages/sqlalchemy/orm/query.py",
>>  
>> line 2736, in __iter__
>>     return self._execute_and_instances(context)
>>   File 
>> "/private/var/mobile/Containers/Shared/AppGroup/05D14C00-CCAC-4E98-A3CC-96C6944B8534/Pythonista3/Documents/site-packages/sqlalchemy/orm/query.py",
>>  
>> line 2751, in _execute_and_instances
>>     result = conn.execute(querycontext.statement, self._params)
>>   File 
>> "/private/var/mobile/Containers/Shared/AppGroup/05D14C00-CCAC-4E98-A3CC-96C6944B8534/Pythonista3/Documents/site-packages/sqlalchemy/engine/base.py",
>>  
>> line 914, in execute
>>     return meth(self, multiparams, params)
>>   File 
>> "/private/var/mobile/Containers/Shared/AppGroup/05D14C00-CCAC-4E98-A3CC-96C6944B8534/Pythonista3/Documents/site-packages/sqlalchemy/sql/elements.py",
>>  
>> line 323, in _execute_on_connection
>>     return connection._execute_clauseelement(self, multiparams, params)
>>   File 
>> "/private/var/mobile/Containers/Shared/AppGroup/05D14C00-CCAC-4E98-A3CC-96C6944B8534/Pythonista3/Documents/site-packages/sqlalchemy/engine/base.py",
>>  
>> line 1010, in _execute_clauseelement
>>     compiled_sql, distilled_params
>>   File 
>> "/private/var/mobile/Containers/Shared/AppGroup/05D14C00-CCAC-4E98-A3CC-96C6944B8534/Pythonista3/Documents/site-packages/sqlalchemy/engine/base.py",
>>  
>> line 1146, in _execute_context
>>     context)
>>   File 
>> "/private/var/mobile/Containers/Shared/AppGroup/05D14C00-CCAC-4E98-A3CC-96C6944B8534/Pythonista3/Documents/site-packages/sqlalchemy/engine/base.py",
>>  
>> line 1341, in _handle_dbapi_exception
>>     exc_info
>>   File 
>> "/private/var/mobile/Containers/Shared/AppGroup/05D14C00-CCAC-4E98-A3CC-96C6944B8534/Pythonista3/Documents/site-packages/sqlalchemy/util/compat.py",
>>  
>> line 200, in raise_from_cause
>>     reraise(type(exception), exception, tb=exc_tb)
>>   File 
>> "/private/var/mobile/Containers/Shared/AppGroup/05D14C00-CCAC-4E98-A3CC-96C6944B8534/Pythonista3/Documents/site-packages/sqlalchemy/engine/base.py",
>>  
>> line 1139, in _execute_context
>>     context)
>>   File 
>> "/private/var/mobile/Containers/Shared/AppGroup/05D14C00-CCAC-4E98-A3CC-96C6944B8534/Pythonista3/Documents/site-packages/sqlalchemy/engine/default.py",
>>  
>> line 450, in do_execute
>>     cursor.execute(statement, parameters)
>>   File 
>> "/private/var/mobile/Containers/Shared/AppGroup/05D14C00-CCAC-4E98-A3CC-96C6944B8534/Pythonista3/Documents/site-packages-2/pymysql/cursors.py",
>>  
>> line 170, in execute
>>     result = self._query(query)
>>   File 
>> "/private/var/mobile/Containers/Shared/AppGroup/05D14C00-CCAC-4E98-A3CC-96C6944B8534/Pythonista3/Documents/site-packages-2/pymysql/cursors.py",
>>  
>> line 328, in _query
>>     conn.query(q)
>>   File 
>> "/private/var/mobile/Containers/Shared/AppGroup/05D14C00-CCAC-4E98-A3CC-96C6944B8534/Pythonista3/Documents/site-packages-2/pymysql/connections.py",
>>  
>> line 517, in query
>>     self._affected_rows = self._read_query_result(unbuffered=unbuffered)
>>   File 
>> "/private/var/mobile/Containers/Shared/AppGroup/05D14C00-CCAC-4E98-A3CC-96C6944B8534/Pythonista3/Documents/site-packages-2/pymysql/connections.py",
>>  
>> line 732, in _read_query_result
>>     result.read()
>>   File 
>> "/private/var/mobile/Containers/Shared/AppGroup/05D14C00-CCAC-4E98-A3CC-96C6944B8534/Pythonista3/Documents/site-packages-2/pymysql/connections.py",
>>  
>> line 1075, in read
>>     first_packet = self.connection._read_packet()
>>   File 
>> "/private/var/mobile/Containers/Shared/AppGroup/05D14C00-CCAC-4E98-A3CC-96C6944B8534/Pythonista3/Documents/site-packages-2/pymysql/connections.py",
>>  
>> line 684, in _read_packet
>>     packet.check_error()
>>   File 
>> "/private/var/mobile/Containers/Shared/AppGroup/05D14C00-CCAC-4E98-A3CC-96C6944B8534/Pythonista3/Documents/site-packages-2/pymysql/protocol.py",
>>  
>> line 220, in check_error
>>     err.raise_mysql_exception(self._data)
>>   File 
>> "/private/var/mobile/Containers/Shared/AppGroup/05D14C00-CCAC-4E98-A3CC-96C6944B8534/Pythonista3/Documents/site-packages-2/pymysql/err.py",
>>  
>> line 109, in raise_mysql_exception
>>     raise errorclass(errno, errval)
>> InternalError: (pymysql.err.InternalError) (1054, u"Unknown column 
>> 'civicrm_address.postalcode' in 'field list'") [SQL: u'SELECT DISTINCT 
>> civicrm_contact.last_name AS civicrm_contact_last_name, 
>> civicrm_contact.first_name AS civicrm_contact_first_name, 
>> civicrm_address.street_address AS civicrm_address_street_address, 
>> civicrm_address.city AS civicrm_address_city, civicrm_address.postalcode AS 
>> civicrm_address_postalcode, civicrm_state_province.name AS 
>> civicrm_state_province_name, civicrm_country.name AS country \nFROM 
>> civicrm_contact, civicrm_address, civicrm_state_province, civicrm_country, 
>> civicrm_entity_tag \nWHERE civicrm_contact.id = 
>> civicrm_entity_tag.entity_id AND civicrm_entity_tag.tag_id = %(tag_id_1)s 
>> AND civicrm_contact.id = civicrm_address.contact_id AND 
>> civicrm_address.state_province_id = civicrm_state_province.id AND 
>> civicrm_address.country_id = civicrm_country.id AND 
>> civicrm_contact.display_name NOT IN (SELECT civicrm_contact.display_name 
>> \nFROM civicrm_contribution \nWHERE civicrm_contribution.receive_date > 
>> %(receive_date_1)s AND civicrm_contribution.contact_id = 
>> civicrm_contact.id AND civicrm_contact.id = civicrm_entity_tag.entity_id 
>> AND civicrm_entity_tag.tag_id = %(tag_id_2)s)'] [parameters: 
>> {u'receive_date_1': datetime.date(2005, 7, 1), u'tag_id_1': 6, u'tag_id_2': 
>> 6}]
>>
>>
>> On Thursday, August 22, 2019 at 9:51:22 PM UTC-4, Ira Fuchs wrote:
>>>
>>> Yes, that would appear to be the problem. When I was in 2.7 it worked 
>>> and in 3.6 the version of pymysql requires a later version (>5.5) of the 
>>> server. I am not able to upgrade the server at this point so I need to 
>>> figure out how to get my notebook back to Python 2 for the time being.
>>>
>>> On Aug 22, 2019, at 9:37 PM, Peter Schutt <peter....@gmail.com> wrote:
>>>
>>> Some time between yesterday and today you have switched python 
>>> interpreters between 2.7 and 3.6. Yesterday your errors were originating 
>>> from modules located in "/Users/ihf/anaconda2/lib/python2.7/", today they 
>>> seem to be coming from "~/anaconda2/lib/python3.6/". To be honest, it's 
>>> better if you are using python 3.x as 2.7 goes end of life in only a few 
>>> short months. This would explain why you had to reinstall pymysql as you 
>>> are now working in a totally different environment.
>>>
>>> The last error you've shown originates from the database layer. What 
>>> version of mysql are you using and might that have changed along with your 
>>> environment? utf8mb4 was introduced in 5.5.3, read more here: 
>>> https://stackoverflow.com/questions/21911733/error-1115-42000-unknown-character-set-utf8mb4
>>> .
>>>
>>> On Friday, 23 August 2019 11:05:14 UTC+10, Ira Fuchs wrote:
>>>>
>>>> OK, I made a few changes/corrections to the Class definitions:
>>>>
>>>> class Contact(Base):
>>>>     __tablename__ = "civicrm_contact"
>>>>     id = Column(Integer, primary_key=True)
>>>>     first_name = Column(String(64, u'utf8_unicode_ci'), index=True)
>>>>     middle_name = Column(String(64, u'utf8_unicode_ci'))
>>>>     last_name = Column(String(64, u'utf8_unicode_ci'), index=True)
>>>>     display_name = Column(String(128, u'utf8_unicode_ci'))
>>>>                           
>>>> class Contribution(Base):
>>>>     __tablename__ = 'civicrm_contribution'
>>>>
>>>>     id = Column(INTEGER, primary_key=True, comment=u'Contribution ID')
>>>>     contact_id = Column(ForeignKey(u'civicrm_contact.id', 
>>>> ondelete=u'CASCADE'), nullable=False, index=True)
>>>>     financial_type_id = Column(ForeignKey(u'civicrm_financial_type.id'), 
>>>> index=True)
>>>>     contribution_page_id = Column(ForeignKey(u'
>>>> civicrm_contribution_page.id', ondelete=u'SET NULL'), index=True)
>>>>     payment_instrument_id = Column(INTEGER, index=True, comment=u'FK to 
>>>> Payment Instrument')
>>>>     receive_date = Column(DateTime, index=True, comment=u'when was gift 
>>>> received')
>>>>     non_deductible_amount = Column(DECIMAL(20, 2), 
>>>> server_default=text("'0.00'"))
>>>>     total_amount = Column(DECIMAL(20, 2), nullable=False)
>>>>     fee_amount = Column(DECIMAL(20, 2), comment=u'actual processor fee 
>>>> if known - may be 0.')
>>>>     net_amount = Column(DECIMAL(20, 2))
>>>>     trxn_id = Column(String(255, u'utf8_unicode_ci'), unique=True)
>>>>     invoice_id = Column(String(255, u'utf8_unicode_ci'))
>>>>     currency = Column(String(3, u'utf8_unicode_ci'))
>>>>     cancel_date = Column(DateTime, comment=u'when was gift cancelled')
>>>>     cancel_reason = Column(Text(collation=u'utf8_unicode_ci'))
>>>>     receipt_date = Column(DateTime)
>>>>     thankyou_date = Column(DateTime, comment=u'when (if) was donor 
>>>> thanked')
>>>>     source = Column(String(255, u'utf8_unicode_ci'), index=True, 
>>>> comment=u'Origin of this Contribution.')
>>>>     amount_level = Column(Text(collation=u'utf8_unicode_ci'))
>>>>     contribution_recur_id = Column(ForeignKey(u'
>>>> civicrm_contribution_recur.id', ondelete=u'SET NULL'), index=True)
>>>>     is_test = Column(Integer, server_default=text("'0'"))
>>>>     is_pay_later = Column(Integer, server_default=text("'0'"))
>>>>     contribution_status_id = Column(INTEGER, index=True)
>>>>     address_id = Column(ForeignKey(u'civicrm_address.id', 
>>>> ondelete=u'SET NULL'), index=True)
>>>>     check_number = Column(String(255, u'utf8_unicode_ci'))
>>>>     campaign_id = Column(ForeignKey(u'civicrm_campaign.id', 
>>>> ondelete=u'SET NULL'), index=True)
>>>>     tax_amount = Column(DECIMAL(20, 2), comment=u'Total tax amount of 
>>>> this contribution.')
>>>>     creditnote_id = Column(String(255, u'utf8_unicode_ci'), index=True)
>>>>     revenue_recognition_date = Column(DateTime, comment=u'Stores the 
>>>> date when revenue should be recognized.')
>>>>     invoice_number = Column(String(255, u'utf8_unicode_ci'), 
>>>> comment=u'Human readable invoice number')
>>>>
>>>>     address = relationship(u'CivicrmAddress')
>>>>     contact = relationship(u'CivicrmContact')
>>>> class Address(Base):
>>>>     __tablename__ = "civicrm_address"
>>>>     id = Column(Integer, primary_key=True)
>>>>     contact_id = Column(ForeignKey(u'civicrm_contact.id', 
>>>> ondelete=u'CASCADE'), index=True)
>>>>     street_address = Column(String(96, u'utf8_unicode_ci'))
>>>>     city = Column(String(64, u'utf8_unicode_ci'))
>>>>     postalcode = Column(String(64, u'utf8_unicode_ci'))
>>>>     state_province_id = Column(String(64))
>>>>     country_id = Column(ForeignKey(u'civicrm_country.id', 
>>>> ondelete=u'SET NULL'))
>>>> class Country(Base):
>>>>     __tablename__ = "civicrm_country"
>>>>     id = Column(Integer, primary_key=True)
>>>>     name = Column(String(64, u'utf8_unicode_ci'))
>>>> class State(Base):
>>>>     __tablename__ = "civicrm_state_province"
>>>>     id = Column(Integer, primary_key=True)
>>>>     name = Column(String(64, u'utf8_unicode_ci'))
>>>>     abbreviation = Column(String(4, u'utf8_unicode_ci'))
>>>>     country_id = Column(ForeignKey(u'civicrm_country.id'))
>>>> class Entity_Tag(Base):
>>>>     __tablename__ = "civicrm_entity_tag"
>>>>     id = Column(INTEGER, primary_key=True)
>>>>     entity_id = Column(INTEGER, nullable=False, index=True)
>>>>     tag_id = Column(ForeignKey(u'civicrm_tag.id', ondelete=u'CASCADE'))
>>>>
>>>> then I created a session and ran your query (with one or two 
>>>> corrections:
>>>>
>>>>     s = Session()
>>>>     subquery = (
>>>>         s.query(Contact.display_name)
>>>>         .filter(
>>>>             Contribution.receive_date > datetime.date(2005, 7, 1),
>>>>             Contribution.contact_id == Contact.id,
>>>>             Contact.id == Entity_Tag.entity_id,
>>>>             Entity_Tag.tag_id == 6,
>>>>         )
>>>>         .subquery()
>>>>     )
>>>>     result = (
>>>>         s.query(
>>>>             Contact.last_name,
>>>>             Contact.first_name,
>>>>             Address.street_address,
>>>>             Address.city,
>>>>             Address.postalcode,
>>>>             State.name,
>>>>             Country.name.label("country"),
>>>>         )
>>>>         .filter(
>>>>             Contact.id == Entity_Tag.entity_id,
>>>>             Entity_Tag.tag_id == 6,
>>>>             Contact.id == Address.contact_id,
>>>>             Address.state_province_id == State.id,
>>>>             Address.country_id == Country.id,
>>>>             Contact.display_name.notin_(subquery),
>>>>         )
>>>>         .distinct()
>>>>         .all()
>>>>     )
>>>>
>>>> and the result is the same error as when I just try to execute an SQL 
>>>> statement without using ORM(I'm note including the entire traceback unless 
>>>> you need it):
>>>>
>>>> InternalError: (pymysql.err.InternalError) (1115, "Unknown character set: 
>>>> 'utf8mb4'")
>>>>
>>>> Since this worked before, all I can think is that I somehow updated or 
>>>> changed pymysql and the result is this error.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>> -- 
>>> SQLAlchemy - 
>>> The Python SQL Toolkit and Object Relational Mapper
>>>  
>>> http://www.sqlalchemy.org/
>>>  
>>> To post example code, please provide an MCVE: Minimal, Complete, and 
>>> Verifiable Example. See http://stackoverflow.com/help/mcve for a full 
>>> description.
>>> --- 
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>>>  
>>> <https://groups.google.com/d/msgid/sqlalchemy/df9aa766-90d3-440b-8b48-18bfc47f568f%40googlegroups.com?utm_medium=email&utm_source=footer>
>>> .
>>>
>>>
>>>

-- 
SQLAlchemy - 
The Python SQL Toolkit and Object Relational Mapper

http://www.sqlalchemy.org/

To post example code, please provide an MCVE: Minimal, Complete, and Verifiable 
Example.  See  http://stackoverflow.com/help/mcve for a full description.
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