Coalesce Op

This is a coalescing operation.

This operation keeps evaluating and returning first non-null result. If there are expressions after the non-null value. They will not be evaluated.

Definition: ["coalesce", <result1: expression(any)>, ...<resultN: expression(any)>]

• <result: expression(any)> - These are results to be evaluated. Each result is evaluated sequentially and first non-null result is returned. Results after that are not evaluated.

Usage

Request:

["coalesce", ["run", "getUser", 1], ["value", {"name"; "default user"}]]

Response:

{"name": "default user"}

Typical Usage

You would use this operation to return default values if one or more operations fail and return a null.