The above code successfully connects to the database. The script also returns no errors when run, however when I go to check if the table was created, there are no tables in the SQL DB at all. Why is no table created and why is no error returned? Answer Each user in MS SQL Server has a default schema associated
Tag: python
SQLite over LAN
my application uses SQLite database for it’s data storage. Idelly, this database should reside on some network drive, let’s name it Z: (Windows XP’s “Map network drive” feature). Application is being developed under Linux, with database locally stored. Here is a part of one module: What would be the correct way to access database on Z: drive? Something along the
sqlalchemy simple example of `sum`, `average`, `min`, `max`
For sqlalchemy, Who can gently give simple examples of SQL functions like sum, average, min, max, for a column (score in the following as an example). As for this mapper: Answer See SQL Expression Language Tutorial for the usage. The code below shows the usage:
Retrieving Data from SQL Using pyodbc
I am trying to retrieve data from an SQL server using pyodbc and print it in a table using Python. However, I can only seem to retrieve the column name and the data type and stuff like that, not the actual data values in each row of the column. Basically I am trying to replicate an Excel sheet that retrieves
RIGHT OUTER JOIN in SQLAlchemy
I have two tables beard and moustache defined below: I have created a SQL Query in PostgreSQL which will combine these two tables and generate following result: Query: However I can not create SQLAlchemy representation of it. I tried several ways from implementing from_statement to outerjoin but none of them really worked. Can anyone help me with it? Answer From
Sqlite3 – Update table using Python code – syntax error near %s
This is my Python code – cursor.execute(“””UPDATE tasks SET task_owner=%s,task_remaining_hours=%s, task_impediments=%s,task_notes=%s WHERE task_id=%s”””, (…
creating a temporary table from a query using sqlalchemy orm
I can create a temporary table this way: but the new table is unreadable because it says it has no primary key. existingtable.id is the primary key of exisitingtable, so I expected it to get the same treatment in the temp table. However, I would rather find some ORM way of doing this anyway. Given: How can I populate temp_table
Filtering Django Query by the Record with the Maximum Column Value
Is there an easy way to filter a Django query based on which record has a max/min value in a column? I’m essentially asking these questions, but in the specific context of Django’s ORM. e.g. Say I have a model designed to store the historical values of everyone’s phone numbers. with the records: Now say I wanted to find everyone’s
How to query database by id using SqlAlchemy?
I need to query a SQLAlchemy database by its id something similar to but for id. How do I do this? [Searching over Google and SO didn’t help] Answer Query has a get function that supports querying by the primary key of the table, which I assume that id is. For example, to query for an object with ID of
Select NULL Values in SQLAlchemy
Here’s my (PostgreSQL) table — I want to select all people that are not known to be married, i.e., including those with NULL marriage_status. This does not work — Of course this does — The problem is that I’m accessing it from SQLAlchemy with — which gets translated to — And does not work — neither does — How should