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when you use the using keyword for a join ?

Here are some links that might be useful to you:

https://stackoverflow.com/questions/11366006/mysql-join-on-vs-using

https://stackoverflow.com/questions/11366006/mysql-join-on-vs-using
MySQL JOIN ON vs USING? – Stack Overflow
The USING clause works for Oracle, PostgreSQL, MySQL, and MariaDB. SQL Server doesn’t support the USING clause, so you need to use the ON clause instead. The USING clause can be used with INNER, LEFT, RIGHT, and FULL JOIN statements. SQL JOIN ON clause with SELECT * Now, if we change the previous ON clause query to select all columns …

https://vladmihalcea.com/sql-join-using

https://vladmihalcea.com/sql-join-using
SQL JOIN USING – A Beginner’s Guide – Vlad Mihalcea
SQL JOIN ON clause with custom projection. Typically, when writing an INNER JOIN or LEFT JOIN query, we would use the ON clause to define the join condition. For instance, to get the comments as well as the associated post title and post identifier, we can write the following SQL projection query: SELECT. post.post_id,

https://www.geeksforgeeks.org / sql-using-clause

https://www.geeksforgeeks.org / sql-using-clause
SQL | USING Clause – GeeksforGeeks
USING Clause is used to match only one column when more than one column matches. NATURAL JOIN and USING Clause are mutually exclusive. It should not have a qualifier (table name or Alias) in the referenced columns. NATURAL JOIN uses all the columns with matching names and datatypes to tables. The Clause can be used to specify …

https://stackoverflow.com/questions/30476377/how-does-using-keyword-work-in-postgresql

https://stackoverflow.com/questions/30476377/how-does-using-keyword-work-in-postgresql
How does `USING` keyword work in PostgreSQL? – Stack Overflow
The USING clause is a shorthand that allows you to take advantage of the specific situation where both sides of the join use the same name for the joining column (s). It takes a comma-separated list of the shared column names and forms a join condition that includes an equality comparison for each one. For example, joining T1 and T2 with …

https://learnsql.com/blog/sql-joins-complete-guide

https://learnsql.com/blog/sql-joins-complete-guide
Your Complete Guide to SQL JOINs (with Resources)
In the SQL Basics course, you’ll learn and practice all the different JOIN types. The course contains 129 exercises, which is equivalent to over 10 hours of coding. Over one-third of the course is devoted solely to SQL JOINs. In many other parts of the course, you’ll combine JOIN knowledge with other SQL features.

https://www.freecodecamp.org/news/understanding-sql-joins

https://www.freecodecamp.org/news/understanding-sql-joins
SQL Joins – LEFT Join, RIGHT Join, and INNER Join Explained
To perform a join, you use the JOIN keyword. And we’ll see how it works in this tutorial. Prerequisites: To continue with this tutorial, you should know the basics of insertion and retrieval operations with SQL. Also, you can setup a demo database that we’ll use for this article. The database should have tables like this:

https://learnsql.com/blog/sql-join-examples-with-explanations

https://learnsql.com/blog/sql-join-examples-with-explanations
7 SQL JOIN Examples With Detailed Explanations
Introduction to JOIN. INNER JOIN. Example #1: Showing books and their authors. Example #2: Showing books and their translators. LEFT JOIN. Example #3: Showing all books alongside their authors and translators, if they exist. Example #4: Showing all books with their editors, if any. RIGHT JOIN.

https://www.digitalocean.com/community/tutorials/how-to-use-joins-in-sql

https://www.digitalocean.com/community/tutorials/how-to-use-joins-in-sql
How To Use Joins in SQL | DigitalOcean
Using equi joins is the most common way to join tables, but it’s possible to use other SQL operators such as , LIKE, NOT LIKE, or even BETWEEN in ON clause search conditions. Be aware, though, that using more complicated search conditions can make it difficult to predict what data will appear in the result set.

https://learnsql.com/blog/sql-join-cheat-sheet

https://learnsql.com/blog/sql-join-cheat-sheet
SQL JOIN Cheat Sheet | LearnSQL.com
The JOIN condition doesn’t have to be an equality – it can be any condition you want. JOIN doesn’t interpret the JOIN condition, it only checks if the rows satisfy the given condition. To refer to a column in the JOIN query, you have to use the full column name: first the table name, then a dot (.) and the column name: ON cat.cat_id = toy.cat_id

https://www.databasestar.com/sql-joins

https://www.databasestar.com/sql-joins
SQL Joins: The Complete Guide – Database Star
The USING keyword is a keyword that you can use as part of the JOIN syntax. It allows you to specify the column name once, instead of twice, when writing a query. A query would look like this: SELECT employee_id, full_name, job_role, department_id, department_name FROM employee JOIN department (department_id);
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