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Joining CTE using a LEFT JOIN in Postgres throw error

When using a left join to join a CTE in Postgres, we receive a column "does not exist" error. This error occurs when one or several of the columns in the CTE are not used in the joined query. When inspecting the Execution Trace and reviewing the Postgr...

CTE PostgreSQL left join


Left outer join losing rows

Hi, I'm joining a bunch of derived views. The SQL has 3 INNER joins and 2 LEFT OUTER joins. The LEFT OUTER joins are losing rows. One of this LEFT OUTER join has a static filter condition (like Active = 'Yes'). None of these derived views have PKs def...

Denodo 8.0 left join


Filtering Left Outer Joins with Automatic Simplification of Queries enabled causing execution plan to be complex

My development team is seeing strange behaviour with Denodo execution plans when using left outer joins and filters. We have a query that has multiple left joins to get data from a lookup table. When we execute the query, it takes approximately 20 se...

Filter left join Query Simplification


For left join, do we need to create associations to remove not required Join

Questions for Asssociation I have one view (v) creating by one fact table (Table F) left join several dimension tables (Table A, B, C, D), I define PK for the fact and all dimesion tables. I have not defined associats for them, when I ran this: "sele...

left join Associations