MySQL

SQLServerCentral Article

Modifying MySQL data from within Python

  • Article

In the previous article in this series, I introduced you to how to access MySQL data from within a Python script. The article described how to use the MySQL Connector to establish a connection with a database and then retrieve data through that connection. In this article, I continue the discussion by demonstrating how to insert, update, and delete data in a MySQL database, again working with Python and the MySQL Connector.

2023-08-04

304 reads

External Article

Modifying MySQL data from within Python

  • Article

In the previous article in this series, I introduced you to how to access MySQL data from within a Python script. The article described how to use the MySQL Connector to establish a connection with a database and then retrieve data through that connection. In this article, I continue the discussion by demonstrating how to insert, update, and delete data in a MySQL database, again working with Python and the MySQL Connector.

2023-08-02

External Article

Retrieving MySQL data from within Python

  • Article

The approach you take when accessing MySQL will depend on the programming language you’re using and the connector you choose for interfacing with the database. Whatever approach you take, the same basic principles generally apply to each environment. You must establish a connection to the database and then issue the commands necessary to retrieve or modify the data.

2023-05-24

Technical Article

Extract parts of the strings from the SQL results directly by using SQL's substring-extraction API functions

  • Script

If you need to extract a substring or create a longer string by combining multiple strings, there are a few methods you can use. To extract a specific portion of a string, you can utilize a substring-extraction function.

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2023-05-09 (first published: )

271 reads

Technical Article

Python 3 Script for Generating SQL Insert Statements from CSV Data

  • Script

This Python 3 script is designed to take CSV file data pasted into the csv_data variable and generate SQL insert statements that can be used to insert the data into a MySQL database. The script is easy to use and can save you a lot of time when working with large amounts of data.

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2023-05-08 (first published: )

4,584 reads

External Article

Subqueries in MySQL

  • Article

A subquery is a type of query that is embedded—or nested—into a data manipulation language (DML) statement. The subquery itself is typically a SELECT statement, although you can also use a TABLE statement or VALUES statement. Even so, the SELECT statement continues to be the most common choice for subqueries, and that’s the one I focus on in this article.

2023-01-11

SQLServerCentral Article

How to Create a Power BI report using MySQL data

  • Article

Introduction In this article, we will learn to create a Power BI report using MySQL data. The article will teach us to use the MySQL Workbench (something like the SSMS, but for MySQL). We will do the following in this article. First, we will connect and create a database in MySQL. Secondly, we will create a […]

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2023-01-09

3,917 reads

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Question of the Day

The LAGging NULL

I have this data in a SQL Server 2022 table:

player         yearid team HR
Alex Rodriguez 2012   NYY  18
Alex Rodriguez 2013   NYY  7
Alex Rodriguez 2014   NYY  NULL
Alex Rodriguez 2015   NYY  12
Alex Rodriguez 2016   NYY  9
If I run this code, what are the results returned in the hrgrowth column?
SELECT
  player
, yearid
, hr
, hr - LAG (hr, 1, 0) IGNORE NULLS OVER (ORDER BY yearid) AS hrgrowth
FROM dbo.playerstats;

See possible answers