This explains the COUNT function, which allows you to quickly calculate the total number of data items stored in a database (a warehouse of information). Just as the English word "count" implies, it ...

Each has its strengths, but their performance profiles vary dramatically depending on dataset size, indexing, and query structure. For this example, I used a table that a table that had 1 Mn+ records ...

SQL-Mongo Converter is a lightweight Python library for converting SQL queries into MongoDB query dictionaries and converting MongoDB query dictionaries into SQL statements. It is designed for ...

Using SELECT DISTINCT in SQL queries is a common way to remove duplicate rows from results, but it’s not always the best choice. It can slow down your queries, especially with large datasets, because ...

Need help choosing the best Python ORM for your projects? Here's what you need to know about SQLAlchemy, PonyORM, Django ORM, Peewee, SQLObject, and Tortoise ORM. When you want to work with a ...

pre-commit is a nice development tool to automatize the binding of pre-commit hooks. After installation and configuration pre-commit will run your hooks before you commit any change. CREATE OR REPLACE ...

For decades, databases have supported declarative SQL as well as imperative functions and procedures as ways for users to express data processing tasks. While the evaluation of declarative SQL has ...

In-memory database engine, improved integration with Windows Azure, and new indexing technology for high performance data warehousing applications - there's plenty to like in SQL Server 2014, released ...