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.
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Last modified: 13 May 2022