Check using clause columns

Reports columns in the USING clause that does not exist in both tables.

Example (MySQL):

CREATE TABLE t1 (i INT, j INT);
CREATE TABLE t2 (k INT, l INT);
SELECT * FROM t1 JOIN t2 USING (j);

In USING clauses, a column name must be present in both tables, and the SELECT query will automatically join those tables by using the given column name. As we do not have the j column in t2, we can rewrite the query using ON. The ON clause can join tables where the column names do not match in both tables.

SELECT * FROM t1 JOIN t2 ON t1.j = t2.l;

Inspection Details
Available in:	AppCode 2023.3, CLion 2023.3, DataGrip 2023.3, DataSpell 2023.3, GoLand 2023.3, IntelliJ IDEA 2023.3, JetBrains Rider 2023.1, PhpStorm 2023.3, PyCharm 2023.3, Qodana for .NET 2023.1, Qodana for JVM 2023.3, Qodana for PHP 2023.3, Qodana for Ruby 2023.3, RubyMine 2023.3
Plugin:	Database Tools and SQL, 233.SNAPSHOT

Last modified: 13 July 2023