visit_param_extract_raw once 4000 10000 param '{"myparam":"test_string"}' '{"myparam":{"nested_1":"test_string","nested_2":"test_2"}}' '{"myparam":{"nested_1":"test_string","nested_2":"test_2","nested_1":"test_string","nested_2":"test_2","nested_1":"test_string","nested_2":"test_2"}}' SELECT count() FROM system.numbers WHERE NOT ignore(visitParamExtractRaw(materialize({param}), 'myparam'))