Database Normalization: From Messy Tables to Perfect Structure
When I built my first database years ago, I thought keeping everything in one big table was the eas...
Tag: SQL Functions
SQL Aggregate Functions: Summarize, Count, and Analyze Data
If you work with databases, you often need to turn large amounts of data into useful numbers. SQL a...
SQL String Functions From Basics to Advanced
When you’re working with databases, sooner or later you’ll face the need to clean, combine, or anal...
SQL Date and Time Functions: Tips, Tricks, and Examples
Working with SQL date and time functions is an essential skill for any database developer or analys...
Relational Database Management Systems (RDBMS) and Their Functions
Essentially, an RDBMS, or Relational Database Management System, is a crucial component of a databa...
What is Foreign Key in database: Functions, Usage, and Examples
A foreign key is an important element in relational database management systems, referring to a col...
MySQL CONCAT() AND CONCAT_WS() functions
MySQL CONCAT() functionMySQL CONCAT_WS() function MySQL CONCAT() function MySQL CONCAT() func...
How to extend group_concat() limit in MySQL & phpMyAdmin
To extend group_concat() limit in MySQL there are two methods, either using SQL command or by setti...