How to define requested_metrics in StoreMetricsAction action configuration for expect_column_pair_values_to_be_equal

[JakubPluta]

Hey,

I am trying to store my Expectations Results in postgres dabase. I am refering to this guide:
https://docs.greatexpectations.io/docs/guides/setup/configuring_metadata_stores/how_to_configure_a_metricsstore/

It's pretty straightforward how to store metrics for given column e.g:

action_list=[
{
  "name": "store_metrics",
  "action": {
    "class_name": "StoreMetricsAction",
    "target_store_name": "metric_store",
    "requested_metrics": {
      "*": [
        {
          "column": {
            "left_columnA": [
              "expect_column_values_to_not_be_null.result.element_count",
              "expect_column_values_to_not_be_null.result.partial_unexpected_list"
            ]
          }
        }
      ]
    }
  }
}
]

So I just provide it in the way:

{
  "column": {
    "left_columnA": [
      "expect_column_values_to_not_be_null.result.element_count",
      "expect_column_values_to_not_be_null.result.partial_unexpected_list"
    ]
  }
}

But I can't figure out how to store values for this kind of expectation: expect_column_pair_values_to_be_equal

I tried something like this:

{
  "column": {
    "column_A": "left_columnA",
    "column_B": "right_columnB",
    "requested_metrics": [
      "expect_column_pair_values_to_be_equal.result.element_count",
      "expect_column_pair_values_to_be_equal.result.missing_percent",
      "expect_column_pair_values_to_be_equal.result.unexpected_count"
    ]
  }
}

But it doesn't work. Can you help me with that ?