Hello,


I have a use case like below.



*USE CASE*

I have a document with fields like



Id,

Id_type,

Field_1.

Filed_2



2 sample messages will look like



{

  "id": "12334",

  "id_type": "USER_RECORD",

  "field_1": null,

  "field_2": null

}





{

  "id": "31321",

  "id_type": "OWNER_RECORD",

  "field_1": null,

  "field_2": null

}





*QUESTIONS*



I’d like to define the unique key as a compound key from fields *id* and
*id_type*

   1. Could someone give me an example of how to do this ? Or point to the
   relevant section in the docs?
   2. Is this the best way to define a compound primary key ? Is there a
   more efficient way ?



*Regards,*

*Vivek*

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