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Retrieving Rows with Maximum Date per Group in SQL

In many scenarios, you may need to retrieve rows from a database table where each row … Retrieving Rows with Maximum Date per Group in SQLRead more

database, filtering, grouping, join(), performance optimization, query, rank, row-number, SQL, subquery, window function

Selecting Distinct Rows Based on a Group in SQL

Introduction In SQL, you often need to retrieve unique rows from a table. The DISTINCT keyword … Selecting Distinct Rows Based on a Group in SQLRead more

data-retrieval, database, distinct, group by, row-number, select, SQL, subquery, window function

Retrieving Top Records by Category

In many database applications, it’s common to need to retrieve a limited number of top records … Retrieving Top Records by CategoryRead more

common-table-expressions, ctes, partition-by, rank, row-number, SQL, window-functions

Efficiently Paginating Results in SQL Server

Paginating Results in SQL Server When working with large datasets in SQL Server, it’s often necessary … Efficiently Paginating Results in SQL ServerRead more

data-paging, fetch, keyset-pagination, offset, pagination, performance, row-number, seek-method, SQL, SQL Server

Selecting Unique Records in SQL: Techniques and Examples

Introduction When working with databases, it’s common to encounter situations where you need to retrieve unique … Selecting Unique Records in SQL: Techniques and ExamplesRead more

common-table-expression, distinct, group by, PostgreSQL, row-number, SQL, subquery, unique-records

Understanding Row Numbering and Partitioning with MySQL

Introduction In SQL, row numbering is a powerful technique used to assign unique sequential integers to … Understanding Row Numbering and Partitioning with MySQLRead more

MySQL, mysql-8-0, partitioning, row-number, row-numbering, user-defined-variables, window function

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

duplicates, group by, having, partitioning, rank, row-number, SQL, window-functions

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

analytic-functions, offset-fetch, oracle-sql, row-number, rownum, top-n-rows

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

database, dense-rank, limit, nth-highest-salary, query optimization, row-number, SQL, subquery, top, window function

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

database, last-n-rows, order-by, performance, queries, row-number, SQL Server, top, window-functions

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