DML or Data Manipulation Commands should be handled with utmost care in SQL for the simple reason they modify the targeted data in some way. Typically, this is via UPDATE or DELETE statements. In this blog post, we will learn how to better protect the data (and ourselves) when running these types of commands by utilizing a SAVEPOINT within a TRANSACTION.
In, Exploring the FOUND_ROWS() function in MySQL – First encounter…, I blogged about my initial exploration of the FOUND_ROWS() function. I also mentioned an alternative use for it in a Stored Procedure versus a SELECT COUNT(*) INTO statement, capturing a row count into a user-defined variable. This companion post will take the concept further, putting it into practice for a similar type of Stored Procedure…
If you have read any of my blog posts, chances are you have seen many times where I have mentioned that typically there are multiple ways to achieve needed outcomes and results in SQL.
Maybe you need a total count of rows returned from a particular query’s results set? There are a myriad number of means to get that result.
However, it just so happens MySQL has a function that will determine the count of rows and return it (the number) for you. Honestly, I was not aware of it until a reader brought it to my attention.
What do I do? Dive right in and learn about it.
You may as well join me…
MySQL has a number of available String Functions, allowing you to work with string data values in a multitude of ways. In this blog post, I explore and learn about the REPLACE function, used to replace specific sections of a string…
I visit Stackoverflow from time to time, curious about problems and issues plaguing developers, similar to my own. More importantly, I am drawn to the answers provided by the community to those problems. Recently, I read a question I was not 100% sure of the solution myself. Trust me, this is the case more often than not (haha). Perfect! Another opportunity to learn something new and here I am, sharing it with y’all…
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