Introduction In SQL, row numbering is a powerful technique used to assign unique sequential integers to … Understanding Row Numbering and Partitioning with MySQLRead more
row-number
Identifying and Selecting Duplicate Records Based on Multiple Fields in SQL
When working with databases, a common task is to identify duplicate records based on specific fields. … Identifying and Selecting Duplicate Records Based on Multiple Fields in SQLRead more
Retrieving Top Rows in Oracle SQL: Techniques and Examples
Introduction In database management, retrieving a specific number of top rows based on certain criteria is … Retrieving Top Rows in Oracle SQL: Techniques and ExamplesRead more
Finding the Nth Highest Salary
Finding the Nth Highest Salary In many database applications, you might need to retrieve the Nth … Finding the Nth Highest SalaryRead more
Retrieving the Last N Rows in SQL Server
Introduction Frequently, when working with databases, you’ll need to retrieve only the most recent entries – … Retrieving the Last N Rows in SQL ServerRead more
Retrieving Top Records from Each Group in SQL
In this tutorial, we will explore how to retrieve the top record from each group in … Retrieving Top Records from Each Group in SQLRead more
Selecting the Nth Row from a SQL Database Table
In this tutorial, we’ll explore how to select the nth row from a SQL database table. … Selecting the Nth Row from a SQL Database TableRead more
Understanding and Using SQL's `ROW_NUMBER()` Function
Introduction to ROW_NUMBER() In SQL, particularly with window functions introduced in SQL Server 2005, ROW_NUMBER() is … Understanding and Using SQL's `ROW_NUMBER()` FunctionRead more
Selecting Distinct Rows with All Columns in SQL
Selecting Distinct Rows with All Columns in SQL In SQL, you often need to retrieve unique … Selecting Distinct Rows with All Columns in SQLRead more
Retrieving the Latest Record for Each User in SQL
Introduction When working with time-series data in SQL, a common requirement is to retrieve the most … Retrieving the Latest Record for Each User in SQLRead more