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Data manipulation involves the process of transforming and organizing raw data to extract meaningful insights and support decision-making in various fields.
Redis, an in-memory data structure store, is often used as a database, cache, and message broker. Its versatility and speed make it a popular choice among developers. The possibilities are endless when combined with Python, one of the most widely-used programming languages. In this article, we’ll explore the basics of […]
MySQL provides several functions to round numbers. Here are the primary rounding functions: ROUND(): This is the most commonly used rounding function. It rounds the number to the nearest whole number or the specified number of decimal places. CEIL() or CEILING(): These functions return the smallest integer value greater than […]
MySQL provides the DATE_ADD() and DATE_SUB() functions to perform date arithmetic. Here are some examples to illustrate their usage: 1. DATE_ADD() The DATE_ADD() function is used to add a specified time interval to a date. Syntax: Example: To add five days to the current date: To add three months to […]
Using JSON format in MySQL involves utilizing JSON data type columns and JSON functions that MySQL provides. Here’s how you can work with JSON data in MySQL: Step 1: Creating a Table with JSON Data Type You can create a table with a JSON data type column to store JSON […]
A window function in MySQL is a type of function that performs a calculation across a set of related rows without grouping or aggregating the data. Window functions are also known as analytic functions or ranking functions. Window functions are different from regular aggregate functions, such as SUM(), AVG(), MAX(), […]
You can retrieve information about the columns in a MySQL view using the INFORMATION_SCHEMA database. To find the data types of the columns in your view, you can execute the following query: Replace your_database_name with the name of your database, and your_view_name with the name of your view. This query […]
In MySQL, VARCHAR and LONGTEXT are two different data types used to store character strings. VARCHAR is a variable-length character string type that can store up to 65,535 characters. When you define a VARCHAR column, you need to specify the maximum number of characters it can hold. For example, if […]
In MySQL, the GROUP BY keyword is used with the SELECT statement to group the result set by one or more columns. When a SELECT statement includes the GROUP BY clause, the result set is divided into groups based on the unique values in the specified columns. Then an aggregate […]
Both Pandas and Polars are valuable tools that serve different purposes. Pandas is a data manipulation and analysis library for Python, while Polars is a data visualization library specifically designed to work with Pandas data frames. Pandas is a powerful tool for working with and manipulating data in Python. It […]
Date functions in MySQL are a set of functions that allow you to manipulate and extract date and time values from expressions, columns, or literals. Date functions help perform various operations on dates, such as finding the difference between two dates, adding or subtracting intervals from a date, formatting a […]