Is there a good practice for entering NULL key values to a PostgreSQL database when a variable is None in Python? Running this query: mycursor.execute('INSERT INTO products (user_id, city_id, product_id, quantity, price) VALUES (%i, %i, %i, %i, %f)' %(u...

I got a lot of errors with the message : "DatabaseError: current transaction is aborted, commands ignored until end of transaction block" after changed from python-psycopg to python-psycopg2 as Django project's database engine. The code remains the sa...

I got a lot of errors with the message : "DatabaseError: current transaction is aborted, commands ignored until end of transaction block" after changed from python-psycopg to python-psycopg2 as Django project's database engine. The code remains the sa...

Does psycopg2 have a function for escaping the value of a LIKE operand for Postgres? For example I may want to match strings that start with the string "20% of all", so I want to write something like this: sql = '... WHERE ... LIKE %(myvalue)s' cursor.f...

How can I determine if a table exists using the Psycopg2 Python library? I want a true or false boolean.

I need to generate a list of insert statements (for postgresql) from html files, is there a library available for python to help me properly escape and quote the names/values? in PHP i use PDO to do the escaping and quoting, is there any equivalent librar...

What's the best way to make psycopg2 pass parameterized queries to PostgreSQL? I don't want to write my own escpaing mechanisms or adapters and the psycopg2 source code and examples are difficult to read in a web browser. If I need to switch to something...

I got a lot of errors with the message : "DatabaseError: current transaction is aborted, commands ignored until end of transaction block" after changed from python-psycopg to python-psycopg2 as Django project's database engine. The code remains the sa...

I installed psycopg2 in virtualenv using easy_install psycopg2. I did not see any errors and looks like installation went fine.. there is an egg file created in the site-packages dir for psycopg2.. but when I run import psycopg2 in the interpreter, I am ...

I'm using Postgres 9 and Python 2.7.2 along with psycopg2 and am trying to insert an array of string values with properly escaped quotation marks. Sample: metadata = {"Name": "Guest", "Details": "['One', 'Two', 'Three']"} cur.execute("insert into meta v...

I'm looking for the most efficient way to bulk-insert some millions of tuples into a database. I'm using Python, PostgreSQL and psycopg2. I have created a long list of tulpes that should be inserted to the database, sometimes with modifiers like geometri...

I'm new to Python and Django. I'm configuring a Django project using a PostgreSQL database engine backend, But I'm getting errors on each database operation. For example when I run manage.py syncdb, I'm getting: C:\xampp\htdocs\djangodir>python manag...

I'm new to Python and Django. I'm configuring a Django project using a PostgreSQL database engine backend, But I'm getting errors on each database operation. For example when I run manage.py syncdb, I'm getting: C:\xampp\htdocs\djangodir>python manag...

I'm new to Python and Django. I'm configuring a Django project using a PostgreSQL database engine backend, But I'm getting errors on each database operation. For example when I run manage.py syncdb, I'm getting: C:\xampp\htdocs\djangodir>python manag...

I haven't worked with psycopg2 before but I'm trying to change the cursor factory to DictCursor so that fetchall or fetchone will return a dictionary instead of a list. I created a test script to make things simple and only test this functionality. Here'...

For some reasons, I would like to do an explicit quoting of a string value (becoming a part of constructed SQL query) instead of waiting for implicit quotation performed by cursor.execute method on contents of its second parameter. By "implicit quotation...

I'm using virtualenv and I need to install "psycopg2". I have done the following: pip install http://pypi.python.org/packages/source/p/psycopg2/psycopg2-2.4.tar.gz#md5=24f4368e2cfdc1a2b03282ddda814160 And I have the following messages: Downloading/un...

I'm using Python and psycopg2 to interface to postgres. When I insert a row... sql_string = "INSERT INTO hundred (name,name_slug,status) VALUES (" sql_string += hundred_name + ", '" + hundred_slug + "', " + status + ");" cursor.execute(sql_string) ..

I'm trying to install psycopg2 on CentOS, I followed everything on this tutorial from "On with it: Installing Python 2.6" all the way to when it imports psycopg2, but when I try to import I get the following error: Traceback (most recent call last): F...

I am using Python with psycopg2 and I'm trying to run a full VACUUM after a daily operation which inserts several thousand rows. The problem is that when I try to run the VACUUM command within my code I get the following error: psycopg2.InternalError: V...