Golang get Snowflake QueryID out of *sql.Rows

getSnowflakeQueryID.go

import (
	"context"
	"database/sql"
	"database/sql/driver"
	"errors"
	"reflect"
  // ...
	sf "github.com/snowflakedb/gosnowflake"
)

// from: https://stackoverflow.com/questions/42664837/how-to-access-unexported-struct-fields/60598827#60598827
func GetUnexportedField(field reflect.Value) interface{} {
	return reflect.NewAt(field.Type(), unsafe.Pointer(field.UnsafeAddr())).Elem().Interface()
}

resultSet, err := s.DB.QueryContext(ctxWithID, statement)
// ...
var queryID string
val := reflect.ValueOf(resultSet).Elem().FieldByName("rowsi")
field := GetUnexportedField(val)

if driverRows, ok := field.(driver.Rows); ok {
  queryID = driverRows.(sf.SnowflakeResult).GetQueryID()
}