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Suraj Kumar @surajkumar a adăugat un sunet in Education & Learning
2025-07-16 10:53:22 ·

SQL inner join

SQL INNER JOIN is used to retrieve records that have matching values in two or more tables. It combines rows from these tables based on a related column, typically a primary key in one table and a foreign key in the other. The INNER JOIN only returns rows when there is at least one match in both tables, making it ideal for extracting meaningful, relational data. For example, if you have a...

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