q1002

R-ORD GOLD-ONLY arbitrary-cut

formula_1 · mini_dev_postgresql from https://bird-bench.oss-cn-beijing.aliyuncs.com/minidev.zip (sha256 cc48ba16838204e4e214512030cb572eeb5f7bcdd999bae4b9b6ff12ec13b92f, downloaded 2026-09-07), member minidev/MINIDEV/mini_dev_postgresql.json

The question

As of the present, what is the full name of the youngest racer? Indicate her nationality and the name of the race to which he/she first joined.

the hint the set supplies: full name refers to forename+surname; Youngest racer = MAX(dob)

This question was audited without a prediction beside it, so there is nothing to compare the gold with. The probes below read the gold alone.

The statements

gold

SELECT T1.forename, T1.surname, T1.nationality, T3.name FROM drivers AS T1 INNER JOIN driverStandings AS T2 ON T1.driverId = T2.driverId INNER JOIN races AS T3 ON T2.raceId = T3.raceId WHERE T1.dob notnull ORDER BY T1.dob DESC LIMIT 1
t1.dob
descending

sha256:eb047a3c8de950a622382a39f1c316af05d518665aad62e526b439ced91b5761

The results

gold, 1 row

from evidence-gold.json, 1 row

forenametext surnametext nationalitytext nametext
Lance Stroll Canadian Chinese Grand Prix

The probes

A smell is a mechanical reason to read this gold statement again. It is a heuristic: it does not state that the statement is wrong, and a maintainer decides.

ordering-over-numeric-text not applicable

this statement orders by a text column holding only numbers, and ordering it as a number gives a different answer, so the gold may be sorting 9.5 above 10

no ORDER BY key resolves to a text column

what it measured 
{
  "heuristic": true,
  "reason": "no ORDER BY key resolves to a text column",
  "keys": [
    {
      "key": "t1.dob",
      "column": "drivers.dob",
      "declared_type": "date",
      "not_applicable": "the column is not declared as text"
    }
  ]
}

arbitrary-cut fired

this statement cuts its result at a LIMIT that does not decide which rows come back, so a different but equally correct statement can return other rows and score zero

from smells.json, 10 rows

Lance Stroll Canadian Austrian Grand Prix 1998-10-29
Lance Stroll Canadian Russian Grand Prix 1998-10-29
Lance Stroll Canadian British Grand Prix 1998-10-29
Lance Stroll Canadian Italian Grand Prix 1998-10-29
Lance Stroll Canadian Monaco Grand Prix 1998-10-29
Lance Stroll Canadian Singapore Grand Prix 1998-10-29
Lance Stroll Canadian Spanish Grand Prix 1998-10-29
Lance Stroll Canadian Chinese Grand Prix 1998-10-29
Lance Stroll Canadian Canadian Grand Prix 1998-10-29
Lance Stroll Canadian Bahrain Grand Prix 1998-10-29
what it measured 
{
  "heuristic": true,
  "cut": 1,
  "offset": 0,
  "distinct_kept": false,
  "unbounded_sql": "SELECT t1.forename, t1.surname, t1.nationality, t3.name, t1.dob AS attestql_ordering_key_0 FROM drivers t1 JOIN driverstandings t2 ON t1.driverid = t2.driverid JOIN races t3 ON t2.raceid = t3.raceid WHERE t1.dob IS NOT NULL ORDER BY t1.dob DESC",
  "unbounded_rows": 31226,
  "projected_columns": [
    "forename",
    "surname",
    "nationality",
    "name"
  ],
  "ordering_key_columns": [
    "attestql_ordering_key_0"
  ],
  "ordering_keys": [
    {
      "key": "t1.dob",
      "direction": "desc",
      "nulls": "default",
      "nulls_first_in_effect": true,
      "returned_rows_null_in_this_key": 0,
      "fires": false
    }
  ],
  "tied_at_the_cut": {
    "positions": [
      0,
      1,
      2,
      3,
      4,
      5,
      6,
      7,
      8,
      9
    ],
    "tied_rows": 13,
    "distinct_projected_answers": 13,
    "rows": [
      [
        {
          "type": "str",
          "value": "Lance"
        },
        {
          "type": "str",
          "value": "Stroll"
        },
        {
          "type": "str",
          "value": "Canadian"
        },
        {
          "type": "str",
          "value": "Austrian Grand Prix"
        }
      ],
      [
        {
          "type": "str",
          "value": "Lance"
        },
        {
          "type": "str",
          "value": "Stroll"
        },
        {
          "type": "str",
          "value": "Canadian"
        },
        {
          "type": "str",
          "value": "Russian Grand Prix"
        }
      ],
      [
        {
          "type": "str",
          "value": "Lance"
        },
        {
          "type": "str",
          "value": "Stroll"
        },
        {
          "type": "str",
          "value": "Canadian"
        },
        {
          "type": "str",
          "value": "British Grand Prix"
        }
      ],
      [
        {
          "type": "str",
          "value": "Lance"
        },
        {
          "type": "str",
          "value": "Stroll"
        },
        {
          "type": "str",
          "value": "Canadian"
        },
        {
          "type": "str",
          "value": "Italian Grand Prix"
        }
      ],
      [
        {
          "type": "str",
          "value": "Lance"
        },
        {
          "type": "str",
          "value": "Stroll"
        },
        {
          "type": "str",
          "value": "Canadian"
        },
        {
          "type": "str",
          "value": "Monaco Grand Prix"
        }
      ],
      [
        {
          "type": "str",
          "value": "Lance"
        },
        {
          "type": "str",
          "value": "Stroll"
        },
        {
          "type": "str",
          "value": "Canadian"
        },
        {
          "type": "str",
          "value": "Singapore Grand Prix"
        }
      ],
      [
        {
          "type": "str",
          "value": "Lance"
        },
        {
          "type": "str",
          "value": "Stroll"
        },
        {
          "type": "str",
          "value": "Canadian"
        },
        {
          "type": "str",
          "value": "Spanish Grand Prix"
        }
      ],
      [
        {
          "type": "str",
          "value": "Lance"
        },
        {
          "type": "str",
          "value": "Stroll"
        },
        {
          "type": "str",
          "value": "Canadian"
        },
        {
          "type": "str",
          "value": "Chinese Grand Prix"
        }
      ],
      [
        {
          "type": "str",
          "value": "Lance"
        },
        {
          "type": "str",
          "value": "Stroll"
        },
        {
          "type": "str",
          "value": "Canadian"
        },
        {
          "type": "str",
          "value": "Canadian Grand Prix"
        }
      ],
      [
        {
          "type": "str",
          "value": "Lance"
        },
        {
          "type": "str",
          "value": "Stroll"
        },
        {
          "type": "str",
          "value": "Canadian"
        },
        {
          "type": "str",
          "value": "Bahrain Grand Prix"
        }
      ]
    ]
  },
  "case": "tie-at-the-cut"
}

not-a-function-of-the-data quiet

rerun over the same rows in another physical order this statement gives another answer, so its result depends on how the rows are stored and not only on the data

what it measured 
{
  "heuristic": true,
  "rule": "R-ORD",
  "baseline_result_hash": "sha256:eb047a3c8de950a622382a39f1c316af05d518665aad62e526b439ced91b5761",
  "baseline_result": {
    "columns": [
      {
        "name": "forename",
        "declared_type": "text"
      },
      {
        "name": "surname",
        "declared_type": "text"
      },
      {
        "name": "nationality",
        "declared_type": "text"
      },
      {
        "name": "name",
        "declared_type": "text"
      }
    ],
    "row_count": 1,
    "truncated": false,
    "rows_shown": 1,
    "rows": [
      [
        {
          "type": "str",
          "value": "Lance"
        },
        {
          "type": "str",
          "value": "Stroll"
        },
        {
          "type": "str",
          "value": "Canadian"
        },
        {
          "type": "str",
          "value": "Chinese Grand Prix"
        }
      ]
    ],
    "result_hash": "sha256:eb047a3c8de950a622382a39f1c316af05d518665aad62e526b439ced91b5761"
  },
  "planner_statistics": {
    "races": {
      "last_analyze": null,
      "last_autoanalyze": null,
      "n_mod_since_analyze": 954
    },
    "drivers": {
      "last_analyze": null,
      "last_autoanalyze": null,
      "n_mod_since_analyze": 840
    },
    "driverstandings": {
      "last_analyze": null,
      "last_autoanalyze": null,
      "n_mod_since_analyze": 31578
    }
  },
  "shuffle": {
    "seed": "1",
    "row_limit": 300000,
    "tables": [
      "races",
      "drivers",
      "driverstandings"
    ],
    "tables_not_shuffled": [],
    "tables_skipped_for_size": {
      "laptimes": 400524,
      "legalities": 427907,
      "posthistory": 303155,
      "trans": 1056320,
      "yearmonth": 383282
    },
    "tables_not_reached_by_a_copy": {}
  },
  "shuffled_copies": {
    "run": true,
    "verdict": "equal",
    "differs": false,
    "result_hash": "sha256:eb047a3c8de950a622382a39f1c316af05d518665aad62e526b439ced91b5761",
    "result": {
      "columns": [
        {
          "name": "forename",
          "declared_type": "text"
        },
        {
          "name": "surname",
          "declared_type": "text"
        },
        {
          "name": "nationality",
          "declared_type": "text"
        },
        {
          "name": "name",
          "declared_type": "text"
        }
      ],
      "row_count": 1,
      "truncated": false,
      "rows_shown": 1,
      "rows": [
        [
          {
            "type": "str",
            "value": "Lance"
          },
          {
            "type": "str",
            "value": "Stroll"
          },
          {
            "type": "str",
            "value": "Canadian"
          },
          {
            "type": "str",
            "value": "Chinese Grand Prix"
          }
        ]
      ],
      "result_hash": "sha256:eb047a3c8de950a622382a39f1c316af05d518665aad62e526b439ced91b5761"
    }
  },
  "plan_variant": {
    "run": false,
    "reason": "the plan variant was not asked for"
  }
}

The evidence records

gold: evidence-gold.json

SELECT T1.forename, T1.surname, T1.nationality, T3.name FROM drivers AS T1 INNER JOIN driverStandings AS T2 ON T1.driverId = T2.driverId INNER JOIN races AS T3 ON T2.raceId = T3.raceId WHERE T1.dob notnull ORDER BY T1.dob DESC LIMIT 1
statement read from
data/questions/mini_dev_postgresql.json
digest
sha256:d2731292f20b8d8569cd956dd747ffe1df13cd625076263e38ae9ebcef50b1ab
origin
https://bird-bench.oss-cn-beijing.aliyuncs.com/minidev.zip (sha256 cc48ba16838204e4e214512030cb572eeb5f7bcdd999bae4b9b6ff12ec13b92f, downloaded 2026-09-07), member minidev/MINIDEV/mini_dev_postgresql.json, 2024-06-19

result_hash sha256:eb047a3c8de950a622382a39f1c316af05d518665aad62e526b439ced91b5761 recomputed from this JSON: match

record_hash sha256:eb0b681572cf4784fec135757d382b36a148d2549806fbbe7811e2c7633a5e3c recomputed from this JSON: match

the result this record holds, 1 row

from evidence-gold.json, 1 row

forenametext surnametext nationalitytext nametext
Lance Stroll Canadian Chinese Grand Prix
what ran, and where
run
audit-adbef1a5-9f41-4a8f-ac55-8c3d8df71394
executed at
2026-09-08T05:19:13.280491+00:00
data as of
2026-09-08T05:18:53.188261+00:00
backend at checkout
PostgreSQL 16.15 (Debian 16.15-1.pgdg13+2) on aarch64-unknown-linux-gnu, compiled by gcc (Debian 14.2.0-19) 14.2.0, 64-bit | server=172.17.0.2/32:5432 | database=bird
backend that answered
PostgreSQL 16.15 (Debian 16.15-1.pgdg13+2) on aarch64-unknown-linux-gnu, compiled by gcc (Debian 14.2.0-19) 14.2.0, 64-bit | server=172.17.0.2/32:5432 | database=bird
database role
auditor
replay rule
R-ORD
question set version
sha256:d2731292f20b8d8569cd956dd747ffe1df13cd625076263e38ae9ebcef50b1ab
validator
audit:libpg_query-parse
checks run
parses_as_exactly_one_statement, the_one_statement_is_a_select, no_placeholder_without_a_bound_parameter
statement timeout
30000 ms
rows
1 row
the session it ran under
engine
postgresql
time_zone
Etc/UTC
date_style
ISO, MDY
interval_style
postgres
extra_float_digits
1
database_collation
en_US.utf8
work_mem
4096
hash_mem_multiplier
2

recorded beside them

statement_timeout
0
search_path
"$user", public
server_version
16.15 (Debian 16.15-1.pgdg13+2)
server_version_num
160015
transaction_read_only
on
max_parallel_workers_per_gather
2
server_encoding
UTF8
datlocprovider
c
daticulocale
datcollversion
2.41
the rendering and the data
version
attestql/audit/2
numeric_scale
6
timestamp_format
%Y-%m-%dT%H:%M:%S.%fZ
timezone
UTC
null_rendering
NULL
encoding
utf-8
schema digest
sha256:ed320100cd50d5f7d7a6cd4d645c075cbe802ce4563aebb681be39ef2649fec4
source file sha256
sha256:31b1da211849d24a57c9af7636da46a5b82fc8a3ca1542bb3ebd8775e9a31cec
rows in public.drivers
840
rows in public.driverstandings
31578
rows in public.races
954

Running these again

gold

re-run this statement read-only against PostgreSQL 16.15 (Debian 16.15-1.pgdg13+2) on aarch64-unknown-linux-gnu, compiled by gcc (Debian 14.2.0-19) 14.2.0, 64-bit | server=172.17.0.2/32:5432 | database=bird under the session settings and over the data this record's fixture digest names, and compare the two results under R-ORD

This question's run

run
audit-adbef1a5-9f41-4a8f-ac55-8c3d8df71394
server
PostgreSQL 16.15 (Debian 16.15-1.pgdg13+2) on aarch64-unknown-linux-gnu, compiled by gcc (Debian 14.2.0-19) 14.2.0, 64-bit | server=172.17.0.2/32:5432 | database=bird
question set
mini_dev_postgresql from https://bird-bench.oss-cn-beijing.aliyuncs.com/minidev.zip (sha256 cc48ba16838204e4e214512030cb572eeb5f7bcdd999bae4b9b6ff12ec13b92f, downloaded 2026-09-07), member minidev/MINIDEV/mini_dev_postgresql.json
replay rule
R-ORD

the run this question belongs to

The JSON this page was rendered from