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Showing posts with the label Sql

Execute .sql Files That Are Used To Run In Sql Management Studio In Python

As part of artifacts delivery, our developers give the data and structure scripts in .sql files. I … Read more Execute .sql Files That Are Used To Run In Sql Management Studio In Python

Why Isn't Sqlalchemy Creating Serial Columns?

SQLAlchemy is generating, but not enabling, sequences for columns in postgresql. I suspect I may b… Read more Why Isn't Sqlalchemy Creating Serial Columns?

Union All Parameterised Queries

I have a certain query which is working fine. The problem is that a part of that query is a string … Read more Union All Parameterised Queries

Matrix Multiplication In Python And Mysql

I have a currency exchange dictionary, as follows: exchange_rates = {'USD': 1.00000, … Read more Matrix Multiplication In Python And Mysql

Sql Date Variables In Python

I am writing a query inside a Python script.The query is as follows: cur = conn.cursor() query1 = &… Read more Sql Date Variables In Python

Sqlalchemy - Count Status Is True

I have two tables in db. One is named company, the other named company_map. company table like: C_… Read more Sqlalchemy - Count Status Is True

Crafting A Query To Construct A Challenging Django Queryset

I have a Django website where users can make groups and other users then visit the groups to post c… Read more Crafting A Query To Construct A Challenging Django Queryset

Saleforce Retrieving Fields From Two Different Objects - (soql) Simple Salesforce Python

I am using simpleSalesforce library for python to query SalesForce. I am looking at two different o… Read more Saleforce Retrieving Fields From Two Different Objects - (soql) Simple Salesforce Python

Sqlite Or Flat Text File?

I process a lot of text/data that I exchange between Python, R, and sometimes Matlab. My go-to is t… Read more Sqlite Or Flat Text File?

Perform A Substring Query In Peewee

I'm using Python 2.7 together with Peewee. At this moment, I need to use Peewee to execute the … Read more Perform A Substring Query In Peewee

Unrecognized Token In Sqlite Statement

I am inserting data from one table to another, however for some reason I get 'unrecognized toke… Read more Unrecognized Token In Sqlite Statement

Pivoting Data And Complex Annotations In Django Orm

The ORM in Django lets us easily annotate (add fields to) querysets based on related data, hwoever … Read more Pivoting Data And Complex Annotations In Django Orm

Sql To Query Set

I have 2 tables: puzz_meeting_candidats : - id, canceled, candidat_id, meeting_id puzz_meeting :… Read more Sql To Query Set

Sql/python: Transform Data From Csv And Into Table With Different Schema With Condition

So, I have a csv file containing data like this: id type sum_cost date_time ----… Read more Sql/python: Transform Data From Csv And Into Table With Different Schema With Condition

Query Q() Is Not Working As 'set Contain' For Related Field In Django?

Let's say we have baskets of fruits. How to filter out those baskets that contains all fruits i… Read more Query Q() Is Not Working As 'set Contain' For Related Field In Django?

Python Is Slow When Iterating Over A Large List

I am currently selecting a large list of rows from a database using pyodbc. The result is then cop… Read more Python Is Slow When Iterating Over A Large List

Parse Table Names From A Bunch Sql Statements

I have an table with thousands of SQL statements in a column called Queries. Any ideas on how to ge… Read more Parse Table Names From A Bunch Sql Statements

Join Pandas Dataframes Based On Column Values

I'm quite new to pandas dataframes, and I'm experiencing some troubles joining two tables. … Read more Join Pandas Dataframes Based On Column Values

Block Insert From Array To Sqlite In Python

So I read this article that says inserting in blocks beats one row at a time: Which is faster: mult… Read more Block Insert From Array To Sqlite In Python

Django Model Inheritance Query A Central Table

I have a solution that I thought I could take care of model inheritance, but now looking at it agai… Read more Django Model Inheritance Query A Central Table