join operator

computing

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Last updated

June 29, 2026

Quick Summary

The term "join" in computing, specifically within databases, refers to the operation of combining rows from two or more tables based on a related column between them. This process is fundamental for retrieving and analyzing data that is spread across multiple tables.12

For example, if you have a table of customers and another table of orders, a join operation can be used to link customers to their respective orders, allowing you to see which customer placed which order. There are different types of joins, such as inner join, left join, right join, and full outer join, each serving a specific purpose in how data from the tables is combined.12

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computer science
Information management
…tables by means of a “join” operation that combines records with identical values of common attributes. Payroll data, for example, can be stored in one table and personnel benefits data in another; complete information on an employee could be obtained by joining the two tables using the employee’s unique identification…
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…tables by means of a “join” operation that combines records with identical values of common attributes. Payroll data, for example, can be stored in one table and personnel benefits data in another; complete information on an employee could be obtained by joining the two tables using the employee’s unique identification…
Read More