Grouped totals a controller recognizes on sight, from an aging to a membership roll-forward, each tied to a balance, fill this summary query set for AC442 Unit 9. Searches like "ac 442 unit 9 assignment example", "ac442 unit 9 sample" and "ac442 unit 9 example" land here.
What a finished AC442 Unit 9 summary query set looks like
Six pages: five queries with their output tables and a closing tie-out page. The first groups revenue by channel and quarter with ROLLUP, so subtotals and a grand total of 4,749,700 print in one result and match the three revenue accounts. The second assigns every open distributor invoice to an age band with a CASE expression on days past due and returns five rows summing to 196,420, the receivables control. The third builds a roll-forward by tier: 3,812 members at the start of the year, 1,146 joins, 998 cancellations and 3,960 at the end. The fourth averages days from invoice to payment by distributor and quarter, keeping only groups with ten or more paid invoices through HAVING. The fifth computes the share of card attempts declined per release, 5.1 percent in the first and 8.3 in the fourth.
How a AC442 Unit 9 example is structured
The set is ordered the way a controller's monthly package usually runs: revenue first, then receivables, then the operating measures that explain them. Each query is presented as the question in one line, the finished SQL, the output table and a tie line naming the balance it agrees with. Roll-forward and aging are chosen deliberately because both carry built-in proofs: an aging must sum to the control account and a roll-forward must move from opening to closing without a gap, so a grader can verify the grouping without rerunning it. HAVING appears where small groups would mislead, and the threshold is stated with its reason. Interpretation is kept to a sentence under each table, reserving argument for the next unit. The tie-out page gathers every agreement into one grid so the whole set can be checked at a glance.
Revenue with subtotals in one pass
ROLLUP prints quarter subtotals and a 4,749,700 grand total in a single result, each channel matched to its own revenue account.
An aging that sums to control
Five bands from current to over ninety days total 196,420, and one distributor holds 12,240 of the 27,870 more than sixty days past due.
Opening, joins, cancellations, closing
A tier-by-tier roll-forward from 3,812 to 3,960 members, where the arithmetic itself proves no member was lost or counted twice.
Days to pay, small groups withheld
HAVING drops distributors with fewer than ten paid invoices in a quarter, since an average over three payments says little about a trend.
Tie-out grid
Every result appears once more beside the ledger or subledger balance it agrees with, and the difference column reads zero throughout.
Where marks go in AC442 Unit 9
Totals that never meet a ledger balance do the most damage here, since a grouping error can shift amounts between rows while the query still runs. The aging is where that shows first: bands built from invoice date rather than due date produce a plausible table that misstates every bucket, and graders who know the terms spot it. A roll-forward whose closing count differs from the member table's current count, with no explanation, fails its own proof. Averages computed over groups of two or three invoices, with no HAVING threshold, invite deductions for overstated conclusions. Column names left as the tool's defaults, sum of amount and similar, obscure what each figure counts. Interpretation running to paragraphs under each table crowds out the tie lines, and rubrics generally reward the tie over the commentary.
Get a AC442 Unit 9 example written to your instructions
The Unit 9 prompt's list of summaries, the tables or database provided and the rubric are what this needs, plus any control balances the instructor published. Each grouped query is written against your schema and tied to a balance, and the set returns in 24-48h, with the first custom sample at no charge.
AC442 Unit 9 questions, answered
Why does the aging use due date instead of invoice date?
Because aging measures how late a payment is, and lateness starts when the terms expire. A thirty-day invoice issued forty days ago is ten days past due, not forty. Building bands from invoice date shifts every invoice into an older bucket and overstates the collection problem, so the sample computes days past due from the due date and says so in the tie line.
What does ROLLUP add over a plain GROUP BY?
Subtotal and grand total rows in the same result, so the reader sees each quarter's channel figures, each channel's annual figure and the overall total without a second query. Some database products spell it differently or use GROUPING SETS; the sample notes the syntax for your section's platform and labels subtotal rows so nobody mistakes them for data.
How is the HAVING threshold chosen?
By asking how many observations make an average worth reporting. The sample uses ten paid invoices per distributor per quarter and states that choice beside the query, so a grader can disagree with the number while still seeing the reasoning. Where your section specifies its own rule for small groups, that rule replaces the sample's threshold.