MySQL last year week month day trend periods
Why? I recently made a joomla module that displays the lastest members to signup. It goes a little further and counts activated accounts for the past day, week, month and year (the below examples count...
View ArticleStrip HTML in MySQL
Just putting a note as I have spent ages looking for a solution and getting it to work in my environment. What? Need to be able to omit HTML tags in certain fields of a mySQL database. Why? We are...
View ArticleGetting the mysql where in delimited string to work
What? I have a mySQL database table of room assets that has a field containing the ID numbers of images relevant to this room. The Problem? When I select specifying the statement "WHERE IN...
View ArticleMySQL: Display Users and Duration in Matrix Timesheet
Given Data Activities by employees with start dates and end dates in a mySQL database. Objective User Mon Tue Wed Thu Fri Sat Sun Total --------------- ------- ------- ------- ------- ------- -------...
View ArticleMySQL day of week ending on Friday
What? Week Ending Date has been requested a lot more frequently now. It's an odd one but the example below shows how to do this for when the week ends on Friday. Assuming it starts on the previous...
View ArticleGenerate Academic Calendar using MySQL
What? We have a specific timetabling system for academic institutions and all our staff/students follow academic week numbers as opposed to calendar week numbers. Why? The aim of this article is to...
View ArticleDelete related records from multiple tables
What? So this is a quick article on how to delete from multiple tables in a mySQL database where we use some JOIN statements. Why? It is never recommended to delete from multiple tables and instead to...
View ArticleQuickly update all content in mySQL database replacing a string
What? This is an article on how to replace a string with another in all your joomla articles without modifying other data such as modified date and author. Why? I used to have a third-party plugin that...
View ArticleExport/Import Database using MySQL Workbench
What? This article isn't unique as there are other tutorials out there. This is meant to detail a process to export a database using MySQL Workbench and then to import it into another database. Why? If...
View ArticleReorder Columns in a Table
What? Just a quick note to myself on how to reorder columns as I was having difficulty using a phpMyAdmin interface to do this. How? Taken from the best forum for programming Qs&As:...
View ArticleSQL: Use CASE for Relevance column
What? So this is a quick note to myself as I was playing with the relevance heuristics of a query. This example adds a column of relevance and sorts the rows accordingly. How? This has to be a real...
View ArticleMySQL: Find all non-alphanumeric rows
What? Quick note on how to do this. I was tasked with cleaning up an english database by replacing all special alphabets (ë to e) and non-alphanumeric symbols with URL friendly characters. How? --...
View Articlemysqldump: Got error: 2049: Connection using old (pre-4.1.1) authentication...
Applies to: MySQL Database v5.0.45 MySQL Workbench v6.0.8.11354 build 833 What? This is a quick article on how to get around the problem of backing up your MySQL database when attempting to "Data...
View ArticleMySQL Updating a database table from another table
What? A quick article on how to populate a database column from another table using a string comparison. Why? I have several database tables which replicate country names and I would rather they all...
View Article