DataGrip 2021.2 Help

Code Inspection: Unused common table expression

Reports unused common table expressions (CTE) inside the query.

Example (PostgreSQL):

CREATE TABLE foo(a INT); WITH a AS (SELECT 1 AS x FROM foo) SELECT 1 + 2 FROM foo;


By using WITH, we create a temporary named result set with the name a, also known as a common table expression (CTE). But we do not use this CTE later in the code. The unused CTE is greyed out.

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