David Overton 9921823915 GDC-189 custom aggregations ... > ## Description -> This PR allows DC agents to define custom aggregate functions for their scalar types. ### Related Issues -> GDC-189 ### Solution and Design > We added a new property `aggregate_functions` to the scalar types capabilities. This allows the agent author to specify a set of aggregate functions supported by each scalar type, along with the function's result type. During GraphQL schema generation, the custom aggregate functions are available via a new method `getCustomAggregateOperators` on the `Backend` type class. Custom functions are merged with the builtin aggregate functions when building GraphQL schemas for table aggregate fields and for `order_by` operators on array relations. ### Steps to test and verify > • Codec tests for aggregate function capabilities have been added to the unit tests. • Some custom aggregate operators have been added to the reference agent and are used in a new test in `api-tests`. PR-URL: https://github.com/hasura/graphql-engine-mono/pull/6199 GitOrigin-RevId: e9c0d1617af93847c1493671fdbb794f573bde0c		2022-10-27 00:44:06 +00:00
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V0	GDC-189 custom aggregations	2022-10-27 00:44:06 +00:00