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python Programming Glossary: queriesHow can I profile a SQLAlchemy powered application? http://stackoverflow.com/questions/1171166/how-can-i-profile-a-sqlalchemy-powered-application Logging SQL will also illustrate if dozens hundreds of queries are being issued which could be better organized into much fewer.. issued which could be better organized into much fewer queries via joins. When using the SQLAlchemy ORM the eager loading feature.. loaded in one result set instead of multiplying numbers of queries as more depth is added i.e. r r r2 r r2 r3 ... If logging reveals..
“Large data” work flows using pandas http://stackoverflow.com/questions/14262433/large-data-work-flows-using-pandas this fashion e.g. I have tables on disk that I read via queries create data and append back. It's worth reading the docs and.. Read iterating files chunk by chunk and multiple table queries . Since pytables is optimized to operate on row wise which is..
http://stackoverflow.com/questions/1650591/whether-to-use-set-names utf8 on the top of every script to let the db know that my queries are utf8 encoded. Can anyone comment the above quote or to put..
Lost connection to MySQL server during query http://stackoverflow.com/questions/1884859/lost-connection-to-mysql-server-during-query with the client and closes the connection. If you need big queries for example if you are working with big BLOB columns you can..
Does Python support MySQL prepared statements? http://stackoverflow.com/questions/1947750/does-python-support-mysql-prepared-statements project earlier where prepared statements made the SELECT queries 20 faster. I'm wondering if it works on Python I can't seem..
Google AppEngine: How to fetch more than 1000? http://stackoverflow.com/questions/264154/google-appengine-how-to-fetch-more-than-1000 2010 you CAN From the changelog Results of datastore count queries and offsets for all datastore queries are no longer capped at..
How can I listen for 'usb device inserted' events in Linux, in Python? http://stackoverflow.com/questions/469243/how-can-i-listen-for-usb-device-inserted-events-in-linux-in-python you can read Hal documentation to find the more suitable queries for your needs or more information about the properties of the..
Using only the DB part of Django http://stackoverflow.com/questions/579511/using-only-the-db-part-of-django into setup. Secondly consider how you would create your queries to the DB with the standard Model.objects.filter call. If this.. So the above example becomes from django.db import reset_queries close_connection _rollback_on_exception reset_queries try tag_query.. close_connection _rollback_on_exception reset_queries try tag_query Tag.objects.filter name 'stackoverflow' if tag_query.count..
Python: pretty-printing ascii tables? http://stackoverflow.com/questions/5909873/python-pretty-printing-ascii-tables function I wrote for displaying the results from SQL queries I can only make over a SOAP API. It expects an input of a sequence..
http://stackoverflow.com/questions/775296/python-mysql-with-variables future when you want to know stuff like this. Better for queries some_dictionary_with_the_data 'name' 'awesome song' 'artist'..
http://stackoverflow.com/questions/7933596/django-dynamic-model-fields as listed above as it's not going to work well with queries. python django dynamic django models django custom manager.. eav__city 'New York' eav__country 'USA' # You can filter queries based on their EAV fields query1 Patient.objects.filter Q eav__city__contains.. name 'something' .data 'a' '1' You can issue indexed queries against hstore fields # equivalence Something.objects.filter..
http://stackoverflow.com/questions/929029/how-do-i-access-the-child-classes-of-an-object-in-django-without-knowing-the-nam For Django 1.2 and newer which can follow select_related queries across reverse OneToOneField relations and thus down inheritance.. class. Without this you may have to do quite a number of queries on child tables to find the instance depending how large your..
NDB Caching When Using Projected Queries http://stackoverflow.com/questions/12128424/ndb-caching-when-using-projected-queries Caching When Using Projected Queries Could not find this specific question asked before yet. How.. appengine docs python ndb cache From the docs Queries do not look up values in any cache. However query results are..
FQL multiquery from python fails with unicode query http://stackoverflow.com/questions/12464426/fql-multiquery-from-python-fails-with-unicode-query on how the facebook.py libraries handles the queries. Queries to Facebook all end up needing to be URL encoded. So digging..
Separation of business logic and data access in django http://stackoverflow.com/questions/12578908/separation-of-business-logic-and-data-access-in-django user.save # mail user send_mail ... # etc etc Thinking in Queries You example did not contain any queries so I took the liberty.. the outcome because we rely on an external API. Making Queries The most basic query in Django is the use of the Manager object..
Django: display time it took to load a page on every page http://stackoverflow.com/questions/17751163/django-display-time-it-took-to-load-a-page-on-every-page total_time .2fs Python python_time .2fs DB db_time .2fs Queries db_queries d ENDSTATS div ''' # Uncomment the following if you.. total_time .2fs Python python_time .2fs DB db_time .2fs Queries db_queries d ENDSTATS div Note you can name the div id stats..
How do I detect if Python is running as a 64-bit application? [duplicate] http://stackoverflow.com/questions/1842544/how-do-i-detect-if-python-is-running-as-a-64-bit-application import platform platform.architecture From the Python docs Queries the given executable defaults to the Python interpreter binary..
AppEngine: Query datastore for records with <missing> value http://stackoverflow.com/questions/598605/appengine-query-datastore-for-records-with-missing-value question According to the App Engine documentation on Queries and Indexes there is a distinction between entities that have..
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