should resolve with a nested lonely data source (TT-9884) #429
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This PR fixes an issue when a nested data source is lonely.
It is built on top of @buraksezer 's research.
How does it work?
The GraphQL data source planner has been slightly modified and will before printing the upstream query check for fields that require selections.
Example:
During this check, it will realize that
countries
is missing the selections and will therefore add the__typename
selection field. This will result in following upstream query:With that the upstream is valid again.