R-SET NOT_EQUAL
debit_card_specializing · 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
Please list the countries of the gas stations with transactions taken place in June, 2013.
the hint the set supplies: June 2013 refers to '201306'; The first 4 strings of the Date values in the yearmonth table can represent year; The 5th and 6th string of the date can refer to month;
NOT_EQUAL states that these two statements disagree on this data under this rule. It does not state which of them is wrong.
read by hand, 2026-09-04: A a wrong answer the benchmark credited: another table or projection; a scalar repeated per row of an unrelated table; a list at least twice the answer's length where the question asks for the things, not the rows
gold DISTINCT over 2 countries; the prediction returns 978
a maintainer's reading of this question, out of classification.json, copied from plans/reports/prediction-mode-260904-real-predictions/classification.json. It is not a verdict and nothing above it was computed from it.
SELECT DISTINCT T2.Country FROM transactions_1k AS T1 INNER JOIN gasstations AS T2 ON T1.GasStationID = T2.GasStationID INNER JOIN yearmonth AS T3 ON T1.CustomerID = T3.CustomerID WHERE T3.Date = '201306'this statement states no ordering of its own
sha256:fd1f6ca0b93c59c5859237219f10dbc8acbec3e68fa8a5d3176e9feb1c00fa6e
SELECT gasstations.country
FROM transactions_1k
JOIN gasstations ON transactions_1k.gasstationid = gasstations.gasstationid
JOIN yearmonth ON transactions_1k.customerid = yearmonth.customerid
WHERE yearmonth.date LIKE '201306'this statement states no ordering of its own
sha256:d366ab4c51d54c46c73bba5072b4b7a3fadd6da57e69337fd37d38066294d5fa
The marked tokens are where the two texts differ. Two statements that differ everywhere can return the same rows, and two that differ in one token can return other rows; the verdict above is read off the results.
from counterexample.json, 0 rows, up to 25 shown per side
| side | countrytext |
|---|---|
| no rows |
from counterexample.json, 976 rows, up to 25 shown per side, 2 on this page
| side | times | countrytext |
|---|---|---|
| second | 912 | CZE |
| second | 64 | SVK |
set(second_rows) == set(gold_rows), float4/float8 cells as Python float as psycopg2 returns them, numeric as Decimal
https://github.com/bird-bench/mini_dev/blob/main/evaluation/evaluation_ex.py
result_eq: equal row counts and equal column counts, each row unordered as a quick rejection, then the two equal as a list when the gold text holds ORDER BY and as a multiset otherwise, under some permutation of the columns; DISTINCT is not stripped and re-executed, and the cells are PostgreSQL's as psycopg2 returns them
ruiqi-zhong/test-suite-sql-eval, exec_eval.py, result_eq, at commit 48cb78ec: https://github.com/ruiqi-zhong/test-suite-sql-eval/blob/48cb78ecf7f610620206283846c76751b18a1326/exec_eval.py
The class states what makes these two results unequal under this rule, read off the two results and nothing else. It does not state which of the two statements is wrong.
from counterexample.json, 2 rows
| countrytext |
|---|
| SVK |
| CZE |
from counterexample.json, 978 rows, 25 on this page
| countrytext |
|---|
| CZE |
| CZE |
| CZE |
| CZE |
| CZE |
| CZE |
| CZE |
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| CZE |
| CZE |
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.
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
the statement states no top level ORDER BY
{
"heuristic": true,
"reason": "the statement states no top level ORDER BY"
}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
the statement states no LIMIT
{
"heuristic": true,
"reason": "the statement states no LIMIT"
}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
{
"heuristic": true,
"rule": "R-SET",
"baseline_result_hash": "sha256:fd1f6ca0b93c59c5859237219f10dbc8acbec3e68fa8a5d3176e9feb1c00fa6e",
"baseline_result": {
"columns": [
{
"name": "country",
"declared_type": "text"
}
],
"row_count": 2,
"truncated": false,
"rows_shown": 2,
"rows": [
[
{
"type": "str",
"value": "SVK"
}
],
[
{
"type": "str",
"value": "CZE"
}
]
],
"result_hash": "sha256:fd1f6ca0b93c59c5859237219f10dbc8acbec3e68fa8a5d3176e9feb1c00fa6e"
},
"planner_statistics": {
"yearmonth": {
"last_analyze": null,
"last_autoanalyze": "2026-09-08 05:19:53.2103+00",
"n_mod_since_analyze": 0
},
"transactions_1k": {
"last_analyze": null,
"last_autoanalyze": "2026-09-08 05:19:51.57727+00",
"n_mod_since_analyze": 0
},
"gasstations": {
"last_analyze": null,
"last_autoanalyze": "2026-09-08 05:19:24.38603+00",
"n_mod_since_analyze": 0
}
},
"shuffle": {
"seed": "1",
"row_limit": 300000,
"tables": [
"yearmonth",
"transactions_1k",
"gasstations"
],
"tables_not_shuffled": [
"yearmonth"
],
"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": "sha256:5bd680b2b7e1c66c882707c2a61744881efe6e97a74bcdef3d8383a979b93aec",
"result": {
"columns": [
{
"name": "country",
"declared_type": "text"
}
],
"row_count": 2,
"truncated": false,
"rows_shown": 2,
"rows": [
[
{
"type": "str",
"value": "CZE"
}
],
[
{
"type": "str",
"value": "SVK"
}
]
],
"result_hash": "sha256:5bd680b2b7e1c66c882707c2a61744881efe6e97a74bcdef3d8383a979b93aec"
}
},
"plan_variant": {
"run": false,
"reason": "the plan variant was not asked for"
}
}SELECT DISTINCT T2.Country FROM transactions_1k AS T1 INNER JOIN gasstations AS T2 ON T1.GasStationID = T2.GasStationID INNER JOIN yearmonth AS T3 ON T1.CustomerID = T3.CustomerID WHERE T3.Date = '201306'result_hash sha256:fd1f6ca0b93c59c5859237219f10dbc8acbec3e68fa8a5d3176e9feb1c00fa6e recomputed from this JSON: match
record_hash sha256:f1b4f9e8e616e6a1eaa4dd41ddd684cf542036f1840490bacb4d3b31db520496 recomputed from this JSON: match
from evidence-gold.json, 2 rows
| countrytext |
|---|
| SVK |
| CZE |
SELECT gasstations.country
FROM transactions_1k
JOIN gasstations ON transactions_1k.gasstationid = gasstations.gasstationid
JOIN yearmonth ON transactions_1k.customerid = yearmonth.customerid
WHERE yearmonth.date LIKE '201306'result_hash sha256:d366ab4c51d54c46c73bba5072b4b7a3fadd6da57e69337fd37d38066294d5fa recomputed from this JSON: match
record_hash sha256:a95e2dc4f5573f46c7101f3770eaa88c70ed62828fe1146f0fb6d95e1b46b4cd recomputed from this JSON: match
from evidence-second.json, 978 rows
| countrytext |
|---|
| CZE |
| CZE |
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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-SET
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-SET