DB Olympics

Queries · q223 · Chief Financial Officer · week 2, night 2

Ledger Line-Item Detail for Flagged Sample Payments, 2025

“What do the actual ledger entries look like for the refunded and anomalous payments flagged in the transaction walkthrough, and does the accounting treatment of refunds make sense?”

Manager · asked the questionTobias LindqvistChief Financial Officer. New this month, previously finance director at a retailer. Preparing the 2025 annual accounts and the 2026 budget.
Analyst · planned the reportKofi MensahHypothesis-driven: states what he expects and designs reports that would prove him wrong.
Engineer · wrote the SQLGraceWrites tidy, layered CTEs with descriptive names, one step per CTE, then a final select.

Fictional people at a fictional company, each played by a language-model agent. Who they are and what they are told

  1. A business event lands on the Chief Financial Officer's desk

    Week 2

    The external auditors start the 2025 year-end audit in two weeks. They will want to see that the money adds up across the whole chain: what shoppers paid, what was refunded or credited, what merchants received in payouts, what Tidewick kept, and that invoices agree with all of it. They will also trace sample transactions end to end.

  2. Tobias Lindqvist writes to Kofi Mensah

    The manager, at the start of week 2

    Subject: Good progress — but the audit clock is now the priority

    Kofi,

    Thanks — this is useful, and I appreciate you flagging the caveats rather than smoothing them over. A few reactions and then where I want to focus next week.

    What stood out:

    • The correction on the revenue report (off by roughly half, now fixed and cross-checked) is reassuring that you caught it, but it also makes me want a second pair of eyes before anything like this goes near the auditors.
    • The refund numbers disagreeing by 16–40% depending on which source we use is the kind of thing an auditor will ask about directly. I don't want to walk in with two different refund totals and no explanation.
    • Concentration easing as we add merchants is good context for the budget conversation — no urgent follow-up needed there this week.
    • I also saw the notes from pricing and risk this week — the free-delivery giveaway and the refund pattern on that welcome discount are small in isolation, but they're exactly the kind of "where did the money go" questions auditors and I will both ask, so I'd like a rough sense of scale rather than letting them sit as separate anecdotes.

    The big new driver: external audit starts in two weeks. They'll want to walk the full money trail — what a shopper paid, what was refunded or credited back, what the merchant was paid out, what we kept as our fee, and that it all agrees with the invoices and accounts — and they'll pick sample transactions and trace them start to finish. I'd rather we got ahead of that than react to it.

    Questions for this week, in priority order:

    1. Can we demonstrate, for a sample of transactions, that the money actually adds up end to end — shopper payment through refund/credit, payout to the merchant, and our retained fee — so we have something ready to hand the auditors rather than assembling it under time pressure?
    2. Which refund figure should I trust for the 2025 accounts, and why do the two methods disagree? I don't need the full reconciliation solved, but I need to understand the likely cause well enough to explain it credibly if asked.
    3. Where do things stand on getting our own plan-fee revenue into the picture, even approximately, so I'm not presenting half of 2025 revenue as the whole story?
    4. If there's room: roughly how much revenue or margin might be leaking through the control gaps your peers flagged this week (free deliveries to canceled customers, uncapped coupon reuse) — just enough for me to judge whether it's noise or something that belongs in front of the auditors too.

    Audit readiness (#1) is the one I most need — please make that the lead request even if it means FX and B2B receivables slip another week.

    Thanks, Tobias

  3. Kofi Mensah plans the night

    The analyst · week 2, night 2, request 1 of 3

    Report 1's ledger columns are the big finding. For every refunded payment, ledger_credit_total exactly equals payment_amount + amount_refunded, not net_amount: e.g. OfficeHub Nordic SO-100363 (265,275.15 paid, fully refunded) shows ledger_credit_total = 530,550.30 = 2x the payment, and Fell & Fjell #1179 shows 69,408.75 = 34,885.85 + 34,522.90 exactly. My ledger_debit_credit_diff column is useless for catching this (it's 0 everywhere by construction, since any balanced journal entry nets to zero regardless of which accounts are touched) — I designed that check too naively. Before I tell Tobias "the ledger balances," I need to see the actual account-level entries for a few of these to confirm this is just a normal (and explainable) refund-accounting pattern — e.g. a reversing entry on a different account — rather than revenue being double-booked.

    Two more things in Report 1 don't fit any pattern and need chasing at scale rather than left as anecdotes: Castell Fasteners' SO-100233 (no refund, not yet paid out) has ledger_credit_total of 805.56 against a payment_amount of 752.91 — an unexplained ~7% gap; and Marrowby & Vane's #3307 (a tiny $20 payment) has NULL ledger_credit_total, meaning no ledger entries exist for it at all. Given this week's pattern across other teams (CISO: deletions and role changes with zero audit trail), an "orphan payment with no ledger entry" is exactly the kind of gap auditors will zero in on, so I want to know if that's a one-off or systemic before Friday.

    Tonight's three slots: (1) pull the actual ledger line items for the flagged refunded + anomalous sample payments to explain the credit-total pattern; (2) run the same credit-total-vs-payment reconciliation across ALL of 2025's payments (not just the 25-sample) to see if the "+refund" pattern is universal/explainable and how big the "other mismatch" and "no ledger entries" buckets really are; (3) quantify the no-ledger-entry gap by merchant to see if it's concentrated or spread thin.

    Ledger Line-Item Detail for Flagged Sample Payments, 2025
    Question
    What do the actual ledger entries look like for the refunded and anomalous payments flagged in the transaction walkthrough, and does the accounting treatment of refunds make sense?
    One row per
    one ledger_entries row, for a fixed list of flagged payments
    Columns
    • merchant_name
    • order_number
    • ledger_account_name
    • account_type
    • direction
    • amount
    • currency_code
    • description
    • entry_group
    • occurred_at
  4. Grace writes the SQL

    The engineer · 1 dry run on the empty schema, then the submission

    Dry run 1 · STATUS: COMPILES (dry run on the empty schema, no data read)
    with flagged_pairs (merchant_name, order_number) as (
      values
        ('OfficeHub Nordic', 'SO-100363'),
        ('Fell & Fjell', '#1179'),
        ('Courtside Collective', 'CC-100015'),
        ('Ampfeld Elektronik', '#1727'),
        ('Ballycorran Industrial Supply', 'SO-100835'),
        ('Ballycorran Industrial Supply', 'SO-100608'),
        ('Midland Safety Wear', 'SO-100307'),
        ('Halden Boots', '#1004'),
        ('Castell Fasteners', 'SO-100233')
    ),
    matched_orders as (
      select
        o.id as order_id,
        o.order_number,
        t.name as merchant_name
      from orders o
      join tenants t on t.id = o.tenant_id
      join flagged_pairs fp
        on fp.merchant_name = t.name
       and fp.order_number = o.order_number
    ),
    matched_payments as (
      select
        p.id as payment_id,
        mo.order_id,
        mo.order_number,
        mo.merchant_name
      from payments p
      join matched_orders mo on mo.order_id = p.order_id
    ),
    ledger_detail as (
      select
        mp.merchant_name,
        mp.order_number,
        la.name as ledger_account_name,
        la.account_type,
        le.direction,
        le.amount,
        le.currency_code,
        le.description,
        le.entry_group,
        le.occurred_at
      from ledger_entries le
      join matched_payments mp on mp.payment_id = le.payment_id
      join ledger_accounts la on la.id = le.ledger_account_id
    )
    select
      merchant_name,
      order_number,
      ledger_account_name,
      account_type,
      direction,
      amount,
      currency_code,
      description,
      entry_group,
      occurred_at
    from ledger_detail
    order by merchant_name, order_number, occurred_at, entry_group

    “Query compiles and returns the expected columns. Submitting now.”

    Submitted · the SQL of the last dry run, unchanged · Submitted to tonight's batch. Your work on this request is done.

    “Submitted. The query resolves each of the 9 flagged (merchant, order_number) pairs to its order(s) via tenants.name + orders.order_number, finds the associated payment(s), and returns every ledger_entries row for those payments at full grain (joined to ledger_accounts for name/account_type), ordered by merchant, order number, timestamp, and entry group so paired debit/credit lines sit together for the CFO's accounting review.”

  5. The report comes back overnight

    As Kofi Mensah saw it, from the small dataset the agents worked on

    merchant_name                 | order_number | ledger_account_name      | account_type   | direction |      amount | currency_code | description                   | entry_group                          | occurred_at               
    ------------------------------+--------------+--------------------------+----------------+-----------+-------------+---------------+-------------------------------+--------------------------------------+---------------------------
    Ampfeld Elektronik            | #1727        | VAT / sales tax payable  | liability      | credit    |   2653.6100 | EUR           | Order payment captured        | c257c88c-e5ae-4799-9e45-53cd2615e382 | 2025-05-02 21:24:26.731706
    Ampfeld Elektronik            | #1727        | Payment gateway clearing | asset          | debit     |  16619.9900 | EUR           | Order payment captured        | c257c88c-e5ae-4799-9e45-53cd2615e382 | 2025-05-02 21:24:26.731706
    Ampfeld Elektronik            | #1727        | Sales revenue            | revenue        | credit    |  13966.3800 | EUR           | Order payment captured        | c257c88c-e5ae-4799-9e45-53cd2615e382 | 2025-05-02 21:24:26.731706
    Ampfeld Elektronik            | #1727        | Payment gateway clearing | asset          | credit    |  16619.9900 | EUR           | Return refund                 | d3174af8-215a-47ee-9c5d-f4917168ab8c | 2025-05-22 23:58:15.251402
    Ampfeld Elektronik            | #1727        | VAT / sales tax payable  | liability      | debit     |   2653.6100 | EUR           | Return refund                 | d3174af8-215a-47ee-9c5d-f4917168ab8c | 2025-05-22 23:58:15.251402
    Ampfeld Elektronik            | #1727        | Refunds and returns      | contra_revenue | debit     |  13966.3800 | EUR           | Return refund                 | d3174af8-215a-47ee-9c5d-f4917168ab8c | 2025-05-22 23:58:15.251402
    Ballycorran Industrial Supply | SO-100608    | Sales revenue            | revenue        | credit    |   7439.3800 | EUR           | Order payment captured        | 8ccce0f3-00e2-4dcd-8512-e47c0b44ecb4 | 2025-04-09 09:30:06.184013
    Ballycorran Industrial Supply | SO-100608    | VAT / sales tax payable  | liability      | credit    |   1711.0600 | EUR           | Order payment captured        | 8ccce0f3-00e2-4dcd-8512-e47c0b44ecb4 | 2025-04-09 09:30:06.184013
    Ballycorran Industrial Supply | SO-100608    | Payment gateway clearing | asset          | debit     |   9150.4400 | EUR           | Order payment captured        | 8ccce0f3-00e2-4dcd-8512-e47c0b44ecb4 | 2025-04-09 09:30:06.184013
    Ballycorran Industrial Supply | SO-100608    | Payment gateway clearing | asset          | credit    |   8402.4600 | EUR           | Return refund                 | eb6ed774-6bb5-407a-93b2-9a4335da04f4 | 2025-04-22 19:29:57.126354
    Ballycorran Industrial Supply | SO-100608    | VAT / sales tax payable  | liability      | debit     |   1511.7900 | EUR           | Return refund                 | eb6ed774-6bb5-407a-93b2-9a4335da04f4 | 2025-04-22 19:29:57.126354
    Ballycorran Industrial Supply | SO-100608    | Refunds and returns      | contra_revenue | debit     |   6890.6700 | EUR           | Return refund                 | eb6ed774-6bb5-407a-93b2-9a4335da04f4 | 2025-04-22 19:29:57.126354
    Ballycorran Industrial Supply | SO-100835    | VAT / sales tax payable  | liability      | credit    |   2837.5100 | EUR           | Order payment captured        | a3269ea7-b9d0-46ab-a5b1-40c7f45e23a8 | 2025-12-08 09:04:33.468947
    Ballycorran Industrial Supply | SO-100835    | Payment gateway clearing | asset          | debit     |  15174.5200 | EUR           | Order payment captured        | a3269ea7-b9d0-46ab-a5b1-40c7f45e23a8 | 2025-12-08 09:04:33.468947
    Ballycorran Industrial Supply | SO-100835    | Sales revenue            | revenue        | credit    |  12337.0100 | EUR           | Order payment captured        | a3269ea7-b9d0-46ab-a5b1-40c7f45e23a8 | 2025-12-08 09:04:33.468947
    Ballycorran Industrial Supply | SO-100835    | VAT / sales tax payable  | liability      | debit     |   2837.5100 | EUR           | Order cancelled: refund       | 87e31b59-7a20-40f6-b7b8-f6b0399a44ea | 2025-12-08 18:34:03.468947
    Ballycorran Industrial Supply | SO-100835    | Payment gateway clearing | asset          | credit    |  15174.5200 | EUR           | Order cancelled: refund       | 87e31b59-7a20-40f6-b7b8-f6b0399a44ea | 2025-12-08 18:34:03.468947
    Ballycorran Industrial Supply | SO-100835    | Refunds and returns      | contra_revenue | debit     |  12337.0100 | EUR           | Order cancelled: refund       | 87e31b59-7a20-40f6-b7b8-f6b0399a44ea | 2025-12-08 18:34:03.468947
    Castell Fasteners             | SO-100233    | Bank                     | asset          | debit     |    752.9100 | USD           | Invoice paid by bank transfer | 8eb000d0-e4bd-4dbb-9e03-d32359d27bec | 2025-02-13 06:29:52.262559
    Castell Fasteners             | SO-100233    | VAT / sales tax payable  | liability      | credit    |     52.7000 | USD           | Invoice paid by bank transfer | 8eb000d0-e4bd-4dbb-9e03-d32359d27bec | 2025-02-13 06:29:52.262559
    Castell Fasteners             | SO-100233    | Sales revenue            | revenue        | credit    |    752.8600 | USD           | Invoice paid by bank transfer | 8eb000d0-e4bd-4dbb-9e03-d32359d27bec | 2025-02-13 06:29:52.262559
    Castell Fasteners             | SO-100233    | Refunds and returns      | contra_revenue | debit     |     52.6500 | USD           | Invoice paid by bank transfer | 8eb000d0-e4bd-4dbb-9e03-d32359d27bec | 2025-02-13 06:29:52.262559
    Courtside Collective          | CC-100015    | VAT / sales tax payable  | liability      | credit    |   3431.7000 | NOK           | Order payment captured        | d0e7c47b-a04a-4da6-bce7-7569daa30a22 | 2025-04-14 13:53:39.65033 
    Courtside Collective          | CC-100015    | Sales revenue            | revenue        | credit    |  13726.8000 | NOK           | Order payment captured        | d0e7c47b-a04a-4da6-bce7-7569daa30a22 | 2025-04-14 13:53:39.65033 
    Courtside Collective          | CC-100015    | Payment gateway clearing | asset          | debit     |  17158.5000 | NOK           | Order payment captured        | d0e7c47b-a04a-4da6-bce7-7569daa30a22 | 2025-04-14 13:53:39.65033 
    Courtside Collective          | CC-100015    | Payment gateway clearing | asset          | credit    |  17158.5000 | NOK           | Return refund                 | c6463d0c-47ac-4844-be3a-c3a92355da63 | 2025-04-23 08:41:26.737694
    Courtside Collective          | CC-100015    | Refunds and returns      | contra_revenue | debit     |  14006.9400 | NOK           | Return refund                 | c6463d0c-47ac-4844-be3a-c3a92355da63 | 2025-04-23 08:41:26.737694
    Courtside Collective          | CC-100015    | VAT / sales tax payable  | liability      | debit     |   3151.5600 | NOK           | Return refund                 | c6463d0c-47ac-4844-be3a-c3a92355da63 | 2025-04-23 08:41:26.737694
    Fell & Fjell                  | #1179        | Sales revenue            | revenue        | credit    |  27908.6800 | DKK           | Order payment captured        | 5ab2780b-ba4c-45a9-a5ea-1d4ade360a6a | 2025-09-07 14:09:33.306149
    Fell & Fjell                  | #1179        | Payment gateway clearing | asset          | debit     |  34885.8500 | DKK           | Order payment captured        | 5ab2780b-ba4c-45a9-a5ea-1d4ade360a6a | 2025-09-07 14:09:33.306149
    Fell & Fjell                  | #1179        | VAT / sales tax payable  | liability      | credit    |   6977.1700 | DKK           | Order payment captured        | 5ab2780b-ba4c-45a9-a5ea-1d4ade360a6a | 2025-09-07 14:09:33.306149
    Fell & Fjell                  | #1179        | Payment gateway clearing | asset          | credit    |  34522.9000 | DKK           | Return refund                 | 13a0efcc-0308-4726-b45a-e3bc20bf000a | 2025-10-05 19:28:01.89952 
    Fell & Fjell                  | #1179        | VAT / sales tax payable  | liability      | debit     |   6904.5800 | DKK           | Return refund                 | 13a0efcc-0308-4726-b45a-e3bc20bf000a | 2025-10-05 19:28:01.89952 
    Fell & Fjell                  | #1179        | Refunds and returns      | contra_revenue | debit     |  27618.3200 | DKK           | Return refund                 | 13a0efcc-0308-4726-b45a-e3bc20bf000a | 2025-10-05 19:28:01.89952 
    Halden Boots                  | #1004        | Sales revenue            | revenue        | credit    |   5248.0000 | SEK           | Order payment captured        | 3dc00aae-2b7f-4477-951d-d2b6bf190949 | 2025-02-16 12:28:39.238233
    Halden Boots                  | #1004        | VAT / sales tax payable  | liability      | credit    |   1312.0000 | SEK           | Order payment captured        | 3dc00aae-2b7f-4477-951d-d2b6bf190949 | 2025-02-16 12:28:39.238233
    Halden Boots                  | #1004        | Payment gateway clearing | asset          | debit     |   6560.0000 | SEK           | Order payment captured        | 3dc00aae-2b7f-4477-951d-d2b6bf190949 | 2025-02-16 12:28:39.238233
    Halden Boots                  | #1004        | Payment gateway clearing | asset          | credit    |   4102.0000 | SEK           | Return refund                 | 214c6ead-b835-4164-bdc9-01671edc1d15 | 2025-03-09 11:10:49.504052
    Halden Boots                  | #1004        | VAT / sales tax payable  | liability      | debit     |    820.4000 | SEK           | Return refund                 | 214c6ead-b835-4164-bdc9-01671edc1d15 | 2025-03-09 11:10:49.504052
    Halden Boots                  | #1004        | Refunds and returns      | contra_revenue | debit     |   3281.6000 | SEK           | Return refund                 | 214c6ead-b835-4164-bdc9-01671edc1d15 | 2025-03-09 11:10:49.504052
    Midland Safety Wear           | SO-100307    | Shipping income          | revenue        | credit    |      9.9500 | EUR           | Order payment captured        | 94034aa4-12b8-472f-ae12-4be498ec6786 | 2025-09-04 10:54:31.532927
    Midland Safety Wear           | SO-100307    | Payment gateway clearing | asset          | debit     |   7702.3700 | EUR           | Order payment captured        | 94034aa4-12b8-472f-ae12-4be498ec6786 | 2025-09-04 10:54:31.532927
    Midland Safety Wear           | SO-100307    | VAT / sales tax payable  | liability      | credit    |   1335.0500 | EUR           | Order payment captured        | 94034aa4-12b8-472f-ae12-4be498ec6786 | 2025-09-04 10:54:31.532927
    Midland Safety Wear           | SO-100307    | Sales revenue            | revenue        | credit    |   6357.3700 | EUR           | Order payment captured        | 94034aa4-12b8-472f-ae12-4be498ec6786 | 2025-09-04 10:54:31.532927
    Midland Safety Wear           | SO-100307    | Payment gateway clearing | asset          | credit    |   4122.4400 | EUR           | Return refund                 | 35317b3b-1bca-4efb-a6ef-983f49e0b259 | 2025-09-29 14:14:56.463681
    Midland Safety Wear           | SO-100307    | VAT / sales tax payable  | liability      | debit     |    677.2800 | EUR           | Return refund                 | 35317b3b-1bca-4efb-a6ef-983f49e0b259 | 2025-09-29 14:14:56.463681
    Midland Safety Wear           | SO-100307    | Refunds and returns      | contra_revenue | debit     |   3445.1600 | EUR           | Return refund                 | 35317b3b-1bca-4efb-a6ef-983f49e0b259 | 2025-09-29 14:14:56.463681
    OfficeHub Nordic              | SO-100363    | Payment gateway clearing | asset          | debit     | 265275.1500 | NOK           | Order payment captured        | ecd97210-c8ce-418b-bae1-3b6a08ccf862 | 2025-08-08 09:36:02.238519
    OfficeHub Nordic              | SO-100363    | VAT / sales tax payable  | liability      | credit    |  53055.0300 | NOK           | Order payment captured        | ecd97210-c8ce-418b-bae1-3b6a08ccf862 | 2025-08-08 09:36:02.238519
    OfficeHub Nordic              | SO-100363    | Sales revenue            | revenue        | credit    | 212220.1200 | NOK           | Order payment captured        | ecd97210-c8ce-418b-bae1-3b6a08ccf862 | 2025-08-08 09:36:02.238519
    (53 rows, first 50 printed)
  6. What came of it

    The memo and the queries that followed; links found by title, so inferred

    Later queries that build on this report:

    It builds on:

  7. It becomes benchmark query q223

    Changed only where the benchmark needs the same result on every system

    • determinismtie-breaker: the remaining output columns (rows equal on all of them are identical)
    • made explicita selected t.col gets AS col, its standard name made explicit (13×)
    • determinismthe standard leaves the place of NULLs in a sort to the implementation: NULLS LAST ascending, NULLS FIRST descending, as in the reference results (10×)
    The benchmark text, against the submitted SQL
    with flagged_pairs (merchant_name, order_number) as (  values    ('OfficeHub Nordic', 'SO-100363'),    ('Fell & Fjell', '#1179'),    ('Courtside Collective', 'CC-100015'),    ('Ampfeld Elektronik', '#1727'),    ('Ballycorran Industrial Supply', 'SO-100835'),    ('Ballycorran Industrial Supply', 'SO-100608'),    ('Midland Safety Wear', 'SO-100307'),    ('Halden Boots', '#1004'),    ('Castell Fasteners', 'SO-100233')),matched_orders as (  select    o.id as order_id,    o.order_number,    o.order_number AS order_number,    t.name as merchant_name  from orders o  join tenants t on t.id = o.tenant_id  join flagged_pairs fp    on fp.merchant_name = t.name   and fp.order_number = o.order_number),matched_payments as (  select    p.id as payment_id,    mo.order_id,    mo.order_number,    mo.merchant_name    mo.order_id AS order_id,    mo.order_number AS order_number,    mo.merchant_name AS merchant_name  from payments p  join matched_orders mo on mo.order_id = p.order_id),ledger_detail as (  select    mp.merchant_name,    mp.order_number,    mp.merchant_name AS merchant_name,    mp.order_number AS order_number,    la.name as ledger_account_name,    la.account_type,    le.direction,    le.amount,    le.currency_code,    le.description,    le.entry_group,    le.occurred_at    la.account_type AS account_type,    le.direction AS direction,    le.amount AS amount,    le.currency_code AS currency_code,    le.description AS description,    le.entry_group AS entry_group,    le.occurred_at AS occurred_at  from ledger_entries le  join matched_payments mp on mp.payment_id = le.payment_id  join ledger_accounts la on la.id = le.ledger_account_id)select  merchant_name,  order_number,  ledger_account_name,  account_type,  direction,  amount,  currency_code,  description,  entry_group,  occurred_atfrom ledger_detailorder by merchant_name, order_number, occurred_at, entry_grouporder by merchant_name NULLS LAST, order_number NULLS LAST, occurred_at NULLS LAST, entry_group NULLS LAST, ledger_account_name NULLS LAST, account_type NULLS LAST, direction NULLS LAST, amount NULLS LAST, currency_code NULLS LAST, description NULLS LAST
    with flagged_pairs (merchant_name, order_number) as (
      values
        ('OfficeHub Nordic', 'SO-100363'),
        ('Fell & Fjell', '#1179'),
        ('Courtside Collective', 'CC-100015'),
        ('Ampfeld Elektronik', '#1727'),
        ('Ballycorran Industrial Supply', 'SO-100835'),
        ('Ballycorran Industrial Supply', 'SO-100608'),
        ('Midland Safety Wear', 'SO-100307'),
        ('Halden Boots', '#1004'),
        ('Castell Fasteners', 'SO-100233')
    ),
    matched_orders as (
      select
        o.id as order_id,
        o.order_number AS order_number,
        t.name as merchant_name
      from orders o
      join tenants t on t.id = o.tenant_id
      join flagged_pairs fp
        on fp.merchant_name = t.name
       and fp.order_number = o.order_number
    ),
    matched_payments as (
      select
        p.id as payment_id,
        mo.order_id AS order_id,
        mo.order_number AS order_number,
        mo.merchant_name AS merchant_name
      from payments p
      join matched_orders mo on mo.order_id = p.order_id
    ),
    ledger_detail as (
      select
        mp.merchant_name AS merchant_name,
        mp.order_number AS order_number,
        la.name as ledger_account_name,
        la.account_type AS account_type,
        le.direction AS direction,
        le.amount AS amount,
        le.currency_code AS currency_code,
        le.description AS description,
        le.entry_group AS entry_group,
        le.occurred_at AS occurred_at
      from ledger_entries le
      join matched_payments mp on mp.payment_id = le.payment_id
      join ledger_accounts la on la.id = le.ledger_account_id
    )
    select
      merchant_name,
      order_number,
      ledger_account_name,
      account_type,
      direction,
      amount,
      currency_code,
      description,
      entry_group,
      occurred_at
    from ledger_detail
    order by merchant_name NULLS LAST, order_number NULLS LAST, occurred_at NULLS LAST, entry_group NULLS LAST, ledger_account_name NULLS LAST, account_type NULLS LAST, direction NULLS LAST, amount NULLS LAST, currency_code NULLS LAST, description NULLS LAST
    10 ms100 ms1 s10 s100 sHyper24.8 msDuckDB59.0 msGizmoSQL64.9 msclickhouse_brew192 msFirebolt12.7 sDataFusion222 msClickHouse3.62 s
  8. Everything, as recorded

    The agents' own records, as the role play wrote them; only the personal data of the person who ran it is redacted

    Grace's whole session, 7 turns
    • The request, as Grace received it
      Report request from Kofi Mensah (analyst for the Chief Financial Officer):
      
      Title: Ledger Line-Item Detail for Flagged Sample Payments, 2025
      Question: What do the actual ledger entries look like for the refunded and anomalous payments flagged in the transaction walkthrough, and does the accounting treatment of refunds make sense?
      Grain: one ledger_entries row, for a fixed list of flagged payments
      Columns:
      - merchant_name
      - order_number
      - ledger_account_name
      - account_type
      - direction
      - amount
      - currency_code
      - description
      - entry_group
      - occurred_at
      Details: Source: ledger_entries joined to ledger_accounts (for name/account_type), joined to payments via ledger_entries.payment_id, joined to orders (for order_number) and tenants (for merchant_name). Restrict to the ledger entries for exactly these 9 (merchant, order_number) pairs from last night's walkthrough sample: (OfficeHub Nordic, SO-100363), (Fell & Fjell, #1179), (Courtside Collective, CC-100015), (Ampfeld Elektronik, #1727), (Ballycorran Industrial Supply, SO-100835), (Ballycorran Industrial Supply, SO-100608), (Midland Safety Wear, SO-100307), (Halden Boots, #1004), (Castell Fasteners, SO-100233) — match each pair to its order then its payment(s). Show every ledger_entries row tied to those payment_id(s), not aggregated. Order by merchant_name, order_number, occurred_at, entry_group.
      
      Check your query with the warehouse's dry_run tool, then hand it in with submit.
    • Grace calls dry_run
      with flagged_pairs (merchant_name, order_number) as (
        values
          ('OfficeHub Nordic', 'SO-100363'),
          ('Fell & Fjell', '#1179'),
          ('Courtside Collective', 'CC-100015'),
          ('Ampfeld Elektronik', '#1727'),
          ('Ballycorran Industrial Supply', 'SO-100835'),
          ('Ballycorran Industrial Supply', 'SO-100608'),
          ('Midland Safety Wear', 'SO-100307'),
          ('Halden Boots', '#1004'),
          ('Castell Fasteners', 'SO-100233')
      ),
      matched_orders as (
        select
          o.id as order_id,
          o.order_number,
          t.name as merchant_name
        from orders o
        join tenants t on t.id = o.tenant_id
        join flagged_pairs fp
          on fp.merchant_name = t.name
         and fp.order_number = o.order_number
      ),
      matched_payments as (
        select
          p.id as payment_id,
          mo.order_id,
          mo.order_number,
          mo.merchant_name
        from payments p
        join matched_orders mo on mo.order_id = p.order_id
      ),
      ledger_detail as (
        select
          mp.merchant_name,
          mp.order_number,
          la.name as ledger_account_name,
          la.account_type,
          le.direction,
          le.amount,
          le.currency_code,
          le.description,
          le.entry_group,
          le.occurred_at
        from ledger_entries le
        join matched_payments mp on mp.payment_id = le.payment_id
        join ledger_accounts la on la.id = le.ledger_account_id
      )
      select
        merchant_name,
        order_number,
        ledger_account_name,
        account_type,
        direction,
        amount,
        currency_code,
        description,
        entry_group,
        occurred_at
      from ledger_detail
      order by merchant_name, order_number, occurred_at, entry_group
    • The warehouse answers
      STATUS: COMPILES (dry run on the empty schema, no data read)
      COLUMNS: merchant_name, order_number, ledger_account_name, account_type, direction, amount, currency_code, description, entry_group, occurred_at
    • GraceQuery compiles and returns the expected columns. Submitting now.
    • Grace calls submit
      with flagged_pairs (merchant_name, order_number) as (
        values
          ('OfficeHub Nordic', 'SO-100363'),
          ('Fell & Fjell', '#1179'),
          ('Courtside Collective', 'CC-100015'),
          ('Ampfeld Elektronik', '#1727'),
          ('Ballycorran Industrial Supply', 'SO-100835'),
          ('Ballycorran Industrial Supply', 'SO-100608'),
          ('Midland Safety Wear', 'SO-100307'),
          ('Halden Boots', '#1004'),
          ('Castell Fasteners', 'SO-100233')
      ),
      matched_orders as (
        select
          o.id as order_id,
          o.order_number,
          t.name as merchant_name
        from orders o
        join tenants t on t.id = o.tenant_id
        join flagged_pairs fp
          on fp.merchant_name = t.name
         and fp.order_number = o.order_number
      ),
      matched_payments as (
        select
          p.id as payment_id,
          mo.order_id,
          mo.order_number,
          mo.merchant_name
        from payments p
        join matched_orders mo on mo.order_id = p.order_id
      ),
      ledger_detail as (
        select
          mp.merchant_name,
          mp.order_number,
          la.name as ledger_account_name,
          la.account_type,
          le.direction,
          le.amount,
          le.currency_code,
          le.description,
          le.entry_group,
          le.occurred_at
        from ledger_entries le
        join matched_payments mp on mp.payment_id = le.payment_id
        join ledger_accounts la on la.id = le.ledger_account_id
      )
      select
        merchant_name,
        order_number,
        ledger_account_name,
        account_type,
        direction,
        amount,
        currency_code,
        description,
        entry_group,
        occurred_at
      from ledger_detail
      order by merchant_name, order_number, occurred_at, entry_group
    • The warehouse answers
      Submitted to tonight's batch. Your work on this request is done.
    • GraceSubmitted. The query resolves each of the 9 flagged (merchant, order_number) pairs to its order(s) via `tenants.name` + `orders.order_number`, finds the associated payment(s), and returns every `ledger_entries` row for those payments at full grain (joined to `ledger_accounts` for name/account_type), ordered by merchant, order number, timestamp, and entry group so paired debit/credit lines sit together for the CFO's accounting review.