CASE WHEN "AE_SIGNALS"."AE_SKILL_NAME" LIKE ('%Veredelung%') THEN COUNT ( "AE_SIGNALS"."SIGNAL_ID" ) * 30 / 60 ELSE NULL END
I get the following error:
The aggregation function COUNT cannot be used together with a dimension function input. Please check that there are no aggregations and dimensions used together as function inputs.