DbVisualizer articles - 250 total
Working with the SQL STUFF Function in SQL Server
Manipulating strings in SQL Server often involves cleaning data or formatting results. The STUFF...
Making SQL Queries Clearer with Aliases
As queries grow more complex, readability matters. You may end up with long table names, repeated...
Working with SQL Date Comparisons
When dealing with records, dates are one of the most common conditions in queries. SQL makes it...
Best MariaDB Clients in 2025
Choosing a MariaDB client is about fit, not flash. This vendor-neutral guide is written for...
OpenSearch vs. ElasticSearch: A Practical Comparison for Developers
OpenSearch and ElasticSearch often get lumped together, but they’re not identical. Both are...
Best MySQL Clients in 2025
This overview helps you match day-to-day tasks to a sensible tool without deep dives. We cover...
A Developer’s Guide to PostgreSQL REGEXP_MATCH (with Snippets)
Need to extract structured data from messy text without leaving SQL? PostgreSQL’s REGEXP_MATCH...
Types of Databases: A Developer’s Overview
Databases are central to development. They store, query, and manage the information our applications...
MySQL ALTER TABLE: A Developer’s Guide to Schema Changes
Schema changes are part of development. Whether you need to add a column, create an index, or change...
MySQL Shutdown Unexpectedly: Causes and Fixes for Developers
As developers, we rely on MySQL for dependable access to data. When the error “MySQL Shutdown...
Primary Key vs. Foreign Key in SQL: Explained with Examples
ver confused about when to use a primary key vs. a foreign key in your SQL tables? You’re not alone....
SQL LIKE Operator: What It Is, How It Works, and Best Practices
The LIKE operator in SQL allows you to filter string data using simple patterns. It’s especially...
How to Use PostgreSQL Foreign Keys the Right Way
PostgreSQL foreign keys allow you to define relationships between tables — like ensuring that every...
MySQL IFNULL Simplified: Replace NULL Values in Queries
In MySQL, NULL values can interfere with query results if not handled properly. The IFNULL function...
Secure Sensitive Data: Discovery Practices and Tools That Work
Discovering and protecting sensitive data—like credit card numbers, health records, or personal...
How to Discover and Protect Sensitive Data Using CLI and SQL Tools
Handling sensitive data requires more than just good intentions. From credit card numbers to personal...
How to Use SQL Server DATEADD for Real-Time Date Calculations
In SQL Server, many operations involve adjusting a date—moving it forward, calculating durations, or...
How to Back Up and Restore MySQL Using mysqldump
If you need to back up or move your MySQL data quickly, mysqldump is the tool for the job. It exports...
Simplifying SQL DELETE for Developers: Syntax and Best Practices
Deleting data in SQL is common but risky. One mistake and you could drop all rows in a table. This...
Simplifying SQL Date Data Types with Practical Tips
SQL databases provide multiple date types, but developers often misuse them or underestimate timezone...
SQL HAVING Explained: Filter Grouped Data With Ease
If you’ve ever tried to filter aggregated results in SQL using WHERE, you probably ran into...
SQL INTERSECT Explained: Find Shared Rows Easily
Comparing data across tables is a common requirement in SQL development. Whether validating user data...
Write Clean SQL: Tools That Format Your Queries for You
Writing SQL is one thing—reading it six months later is another. That’s why formatters exist. These...
Clean and Compare Strings in SQL with TRIM
Inconsistent string values are one of the most common causes of mismatched query results. Whether...
A Developer's Guide to PostgreSQL Full Text Search
Looking to move beyond simple LIKE queries in SQL? PostgreSQL offers native full text search, a...
SQL UNION ALL: Combine Queries and Keep Duplicates
Need to combine results from two or more queries—but keep all the rows, even the duplicates? UNION...
How to Use SQL UNION and UNION ALL to Merge Query Results
If you've ever needed to combine the results of multiple SQL queries into one list, UNION is your...
How to Use SQL CONVERT for Clean Type Conversions
Type conversion in SQL can be tricky, especially across different database systems. SQL Server and...
SQL CASE Statement Explained with Real-World Examples
Conditional logic is everywhere—from setting discounts to classifying users. SQL has a native way to...
SQL REPLACE Function: Quick Guide with Real Examples
Keeping string data accurate is a routine but critical part of working with databases. SQL’s...