q900002

R-ORD GOLD-ONLY arbitrary-cut not-a-function-of-the-data

questions

The question

Who holds the highest score?

the hint the set supplies: the highest score refers to MAX(score)

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 name FROM scores ORDER BY score DESC LIMIT 1
score
descending

sha256:d500dc5fa293a6c4835e6fc60205555fe47bb3f7a37834dbf188edeba5fc449f

The results

gold, 1 row

from evidence-gold.json, 1 row

nameTEXT
ash

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": "score",
      "column": "scores.score",
      "declared_type": "INTEGER",
      "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, 3 rows

ash 99
bram 99
cleo 99
what it measured 
{
  "heuristic": true,
  "cut": 1,
  "offset": 0,
  "distinct_kept": false,
  "unbounded_sql": "SELECT name, score AS attestql_ordering_key_0 FROM scores ORDER BY score DESC",
  "unbounded_rows": 6,
  "projected_columns": [
    "name"
  ],
  "ordering_key_columns": [
    "attestql_ordering_key_0"
  ],
  "ordering_keys": [
    {
      "key": "score",
      "direction": "desc",
      "nulls": "last",
      "nulls_first_in_effect": false,
      "returned_rows_null_in_this_key": 0,
      "fires": false
    }
  ],
  "tied_at_the_cut": {
    "positions": [
      0,
      1,
      2
    ],
    "tied_rows": 3,
    "distinct_projected_answers": 3,
    "rows": [
      [
        {
          "type": "str",
          "value": "ash"
        }
      ],
      [
        {
          "type": "str",
          "value": "bram"
        }
      ],
      [
        {
          "type": "str",
          "value": "cleo"
        }
      ]
    ]
  },
  "case": "tie-at-the-cut"
}

not-a-function-of-the-data fired

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

from smells.json, 1 row

bram
what it measured 
{
  "heuristic": true,
  "rule": "R-ORD",
  "baseline_result_hash": "sha256:d500dc5fa293a6c4835e6fc60205555fe47bb3f7a37834dbf188edeba5fc449f",
  "baseline_result": {
    "columns": [
      {
        "name": "name",
        "declared_type": "TEXT"
      }
    ],
    "row_count": 1,
    "truncated": false,
    "rows_shown": 1,
    "rows": [
      [
        {
          "type": "str",
          "value": "ash"
        }
      ]
    ],
    "result_hash": "sha256:d500dc5fa293a6c4835e6fc60205555fe47bb3f7a37834dbf188edeba5fc449f"
  },
  "planner_statistics": {},
  "shuffle": {
    "seed": "1",
    "row_limit": 300000,
    "tables": [
      "scores"
    ],
    "tables_not_shuffled": [],
    "tables_skipped_for_size": {},
    "tables_not_reached_by_a_copy": {
      "main.y": "the statement names this table's schema, and a name that states its schema is read from that schema whatever TEMP holds, so the rerun reads this table and not a copy of it"
    }
  },
  "shuffled_copies": {
    "run": true,
    "verdict": "not_equal",
    "differs": true,
    "result_hash": "sha256:267ca256126251d0810bdb5d42028edbe1d9d583007cbb3963058fe0b6e18323",
    "result": {
      "columns": [
        {
          "name": "name",
          "declared_type": "TEXT"
        }
      ],
      "row_count": 1,
      "truncated": false,
      "rows_shown": 1,
      "rows": [
        [
          {
            "type": "str",
            "value": "bram"
          }
        ]
      ],
      "result_hash": "sha256:267ca256126251d0810bdb5d42028edbe1d9d583007cbb3963058fe0b6e18323"
    }
  },
  "plan_variant": {
    "run": false,
    "reason": "the plan variant was not asked for"
  }
}

The evidence records

gold: evidence-gold.json

SELECT name FROM scores ORDER BY score DESC LIMIT 1
statement read from
demo/questions.json
digest
sha256:7ad58addc070b425cabfc9d67bbd9c95840253160cf3b73d672e9aeb4897f5ff
origin
the run was told none

result_hash sha256:d500dc5fa293a6c4835e6fc60205555fe47bb3f7a37834dbf188edeba5fc449f recomputed from this JSON: match

record_hash sha256:844f744103463d37858643f4bed9b075b0fb9c6b75cce9595ae30cf39edec7c5 recomputed from this JSON: match

the result this record holds, 1 row

from evidence-gold.json, 1 row

nameTEXT
ash
what ran, and where
run
audit-5ac1b5ac-ceba-418a-841e-577381666b11
executed at
2026-09-08T04:11:01.301818+00:00
data as of
2026-09-08T04:11:01.285823+00:00
backend at checkout
SQLite 3.53.4 | file=/private/tmp/attestql-site-sandbox/demo/fixture.sqlite | size=69632
backend that answered
SQLite 3.53.4 | file=/private/tmp/attestql-site-sandbox/demo/fixture.sqlite | size=69632
database role
file
replay rule
R-ORD
question set version
sha256:7ad58addc070b425cabfc9d67bbd9c95840253160cf3b73d672e9aeb4897f5ff
validator
audit:sqlglot-sqlite-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
sqlite
time_zone
not stated by this engine
date_style
not stated by this engine
interval_style
not stated by this engine
extra_float_digits
not stated by this engine
database_collation
not stated by this engine
work_mem
not stated by this engine
hash_mem_multiplier
not stated by this engine

recorded beside them

sqlite_version
3.53.4
encoding
UTF-8
reverse_unordered_selects
0
query_only
1
journal_mode
delete
data_version
1
compile_options
ATOMIC_INTRINSICS=1,COMPILER=clang-21.0.0,DEFAULT_AUTOVACUUM,DEFAULT_CACHE_SIZE=-2000,DEFAULT_FILE_FORMAT=4,DEFAULT_JOURNAL_SIZE_LIMIT=-1,DEFAULT_MMAP_SIZE=0,DEFAULT_PAGE_SIZE=4096,DEFAULT_PCACHE_INITSZ=20,DEFAULT_RECURSIVE_TRIGGERS,DEFAULT_SECTOR_SIZE=4096,DEFAULT_SYNCHRONOUS=2,DEFAULT_WAL_AUTOCHECKPOINT=1000,DEFAULT_WAL_SYNCHRONOUS=2,DEFAULT_WORKER_THREADS=0,DIRECT_OVERFLOW_READ,ENABLE_API_ARMOR,ENABLE_COLUMN_METADATA,ENABLE_DBSTAT_VTAB,ENABLE_FTS3,ENABLE_FTS3_PARENTHESIS,ENABLE_FTS5,ENABLE_GEOPOLY,ENABLE_MATH_FUNCTIONS,ENABLE_MEMORY_MANAGEMENT,ENABLE_PERCENTILE,ENABLE_PREUPDATE_HOOK,ENABLE_RTREE,ENABLE_SESSION,ENABLE_STAT4,ENABLE_UNLOCK_NOTIFY,MALLOC_SOFT_LIMIT=1024,MAX_ATTACHED=10,MAX_COLUMN=2000,MAX_COMPOUND_SELECT=500,MAX_DEFAULT_PAGE_SIZE=8192,MAX_EXPR_DEPTH=1000,MAX_FUNCTION_ARG=1000,MAX_LENGTH=1000000000,MAX_LIKE_PATTERN_LENGTH=50000,MAX_MMAP_SIZE=0x7fff0000,MAX_PAGE_COUNT=0xfffffffe,MAX_PAGE_SIZE=65536,MAX_SQL_LENGTH=1000000000,MAX_TRIGGER_DEPTH=1000,MAX_VARIABLE_NUMBER=250000,MAX_VDBE_OP=250000000,MAX_WORKER_THREADS=8,MUTEX_PTHREADS,SYSTEM_MALLOC,TEMP_STORE=1,THREADSAFE=1,USE_URI
collation_list
RTRIM,NOCASE,BINARY
case_sensitive_like
0
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:e4354ead6a2289b8c76e7795b0838826fbe93f799799ce632c3799ead4e830e1
source file sha256
rows in main.scores
6

Running these again

gold

re-run this statement read-only against SQLite 3.53.4 | file=/private/tmp/attestql-site-sandbox/demo/fixture.sqlite | size=69632 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-5ac1b5ac-ceba-418a-841e-577381666b11
server
SQLite 3.53.4 | file=/private/tmp/attestql-site-sandbox/demo/fixture.sqlite | size=69632
question set
questions
replay rule
R-ORD

the run this question belongs to

The JSON this page was rendered from