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[lquerel]

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[Plommonsorbet]

Hey!

Thanks for creating this library, I'm really happy to be able to use rust for working with bigquery data!

I have a question about using the query parameter option:

Looking through the docs I've found that there is the option QueryParameter however it requires you to declare a QueryParameterType which I'm not quite clear on how to do.

Looking at the code snippet for the QueryParameterType, I'm understanding this as a recursive type since there is no Option around array_type, I know this is normally fine because of the Box but I don't understand how to opt out of this without an option or some other kind of enum or break point.

pub struct QueryParameterType {
    pub array_type: Box<QueryParameterType>,
    pub struct_types: Option<Vec<QueryParameterTypeStructTypes>>,
    pub type: String,
}

Maybe there is some trick I don't know with Box to not make it infinitely recursive? Would love to just get a short code snippet of how to define a simple parameter type like a string or int if that would be possible?

[crbl1122]

Hi! I am looking at the example provided for gcp_bigquery_client but I have an authentication issue. I am running the code from a GCP Compute Engine and I am using a service account to access resources (like BigQuery), not a credentials file. The example I see is only for credentials file usage. Could someone provide an example about how I can authenticate with this client into BigQuery using a service account: username@project_id.iam.gserviceaccount.com? Thank you.