Categories / sql
Transforming Duplicate Rows with SQL Self-Joins and Data Modeling Techniques
10 Techniques to Optimize Your SQL Queries for Faster Database Performance
Understanding SQL Error 21000: Avoiding Errors with Subqueries in Your Queries
Joining Tables with Similar Values Using a Common Table Expression (CTE): A Step-by-Step Guide
Understanding Rollback in JDBC Transactions: Simplifying Error Handling with Optimized Logic
Querying Data from Two Tables with Similar Column Names Using PostgreSQL and SQL
Splitting Column Values into Email and Name in SQL Server
Filtering and Joining Multiple Tables with Common Data: A Performance-Centric Approach
Identifying Changes in Table Values Within a Specific Time Window Using Conditional Logic and Date Arithmetic
Return Only Rows When Specific Value Doesn't Exist in Another Table