A user reports an errormessage on an Explore: “Non-unique value/primary key (or sql_distinct

Vendor: Google
Product: LookML-Developer
Update on: Jul 30, 2025
Questions: 50

Google LookML-Developer Question Answer

A user reports an errormessage on an Explore: “Non-unique value/primary key (or sql_distinct_key), value overflow or collision when computing sum”.

What should the LookML developer check for in the joined views of the Explore?

The sum measure used is defined correctly.

A unique primary key is defined in each view.

Symmetric_aggregates: no is not present in the Explore definition.

No concatenated primary keys are used.

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