Categories / sql
Converting Unicode to German Umlauts with SQL Queries
Parsing MySQL `WHERE` Strings with Regex: A Comprehensive Guide
Understanding Aggregate Functions and GROUP BY Clauses: How to Get the Second Highest Salary in a Database Table
SQL Self Joining to Filter Out Null Values: A Step-by-Step Guide
Filtering Rows with Earliest Date for Each ID but Only if Condition is Met
Mastering Date Data Types and Functions in PostgreSQL: Best Practices and Advanced Techniques
Mastering BigQuery's Unnest Function: A Step-by-Step Guide for Data Transformation and Joining
Optimizing Database Design: A Comprehensive Guide to Normalizing Your Data for Better Performance and Reliability
Deleting Rows from a Table Based on Query Results in SQL
Comparing Duplicate Rows Over Two Tables in Athena: A Step-by-Step Guide to Using Join Operations and Counting Distinct Elements