Null comparison
Reports comparisons with NULL that can be replaced with IS NULL or IS NOT NULL operators.
Example (Microsoft SQL Server):
CREATE TABLE foo ( id int );
SELECT * FROM foo WHERE NULL = NULL;
SELECT * FROM foo WHERE NULL != NULL;
The NULL = NULL can be replaced with IS NULL, the NULL != NULL comparison with IS NOT NULL. To do this replacement, you can use Use IS NULL operator or Use IS NOT NULL operator quick-fixes.
SELECT * FROM foo WHERE NULL IS NULL;
SELECT * FROM foo WHERE NULL IS NOT NULL;
Inspection Details | |
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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