DataGrip 2021.2 Help

Code Inspection: 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;

Suppress an inspection in the editor

  1. Position the caret at the highlighted line and press Alt+Enter or click the Intention action icon.

  2. Click the arrow next to the inspection you want to suppress and select the necessary suppress action.

Last modified: 16 July 2021