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;
- By ID
Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.
SqlCheckUsingColumns
Inspection Details | |
---|---|
By default bundled with: | CLion 2024.3, DataGrip 2024.3, GoLand 2024.3, IntelliJ IDEA 2024.3, JetBrains Rider 2024.3, PhpStorm 2024.3, PyCharm 2024.3, Qodana for .NET 2024.3, Qodana for Go 2024.3, Qodana for JS 2024.3, Qodana for JVM 2024.3, Qodana for PHP 2024.3, Qodana for Ruby 2024.3, RubyMine 2024.3, WebStorm 2024.3 |
Can be installed with plugin: | Database Tools and SQL, 243.23140 |
Thanks for your feedback!