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WM5 | BAHADORY| Module-Databases (Big-Spender) | Week 2 #154

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WM5 | BAHADORY| Module-Databases (Big-Spender) | Week 2 #154

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9d29409
added query for description
A-Bahadory May 6, 2024
0985901
completed Big Spender
A-Bahadory May 6, 2024
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27 changes: 24 additions & 3 deletions Big-Spender/readme.md
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Expand Up @@ -47,7 +47,7 @@ You are working with Claire and Farnoosh, who are trying to complete a missing r

**You:** Absolutely. Here's the SQL query you need:

```sql
```SELECT * FROM spends WHERE amount BETWEEN 30000 AND 31000;
INSERT YOUR QUERY HERE
```

Expand All @@ -67,16 +67,18 @@ INSERT YOUR QUERY HERE

**You:** Then here's the query for that:

```sql
```
INSERT YOUR QUERY HERE
SELECT * FROM spends WHERE description LIKE '%fee%';
```

**Farnoosh:** Hi, it's me again. It turns out we also need the transactions that have the expense area of 'Better Hospital Food'. Can you help us with that one?

**You:** No worries. Here's the query for that:

```sql
```
INSERT YOUR QUERY HERE
SELECT sp.date, sp.description, expense.expense_area FROM spends sp JOIN expense_areas expense ON (sp.expense_area_id = expense.id) WHERE expense.expense_area LIKE '%Better Hospital Food%';
```

**Claire:** Great, that's very helpful. How about the total amount spent for each month?
Expand All @@ -85,6 +87,7 @@ INSERT YOUR QUERY HERE

```sql
CREATE YOUR QUERY HERE
SELECT to_char(date,'YYYY-MM') AS months, sum(amount) FROM spends GROUP BY month;
```

**Farnoosh:** Thanks, that's really useful. We also need to know the total amount spent on each supplier. Can you help us with that?
Expand All @@ -93,6 +96,7 @@ CREATE YOUR QUERY HERE

```sql
INSERT YOUR QUERY HERE
SELECT sp.amount FROM spends sp JOIN suppliers sup ON (sp.supplier_id = sup.id);
```

**Farnoosh:** Oh, how do I know who these suppliers are? There's only numbers here.
Expand All @@ -101,6 +105,7 @@ INSERT YOUR QUERY HERE

```sql
INSERT YOUR QUERY HERE
SELECT sp.amount, sup.supplier FROM spends sp JOIN suppliers sup ON (sp.supplier_id = sup.id);
```

**Claire:** Thanks, that's really helpful. I can't quite figure out...what is the total amount spent on each of these two dates (1st March 2021 and 1st April 2021)?
Expand All @@ -113,6 +118,10 @@ INSERT YOUR QUERY HERE

```sql
CREATE YOUR QUERY HERE

SELECT date,SUM(amount) FROM spends
WHERE date in ('2021-03-01', '2021-04-01')
GROUP BY date;
```

**Farnoosh:** Fantastic. One last thing, looks like we missed something. Can we add a new transaction to the spends table with a description of 'Computer Hardware Dell' and an amount of £32,000?
Expand All @@ -126,11 +135,23 @@ CREATE YOUR QUERY HERE
```sql
INSERT YOUR QUERIES HERE

BEGIN;

INSERT INTO spends (date, transaction_no, supplier_inv_no) VALUES ('2021-08-19', 38104091, 3780119655);
INSERT INTO expense_types (expense_type) VALUES ('Hardware');
INSERT INTO expense_areas (expense_area) VALUES ('IT');
INSERT INTO suppliers (supplier) VALUES ('Dell');

COMMIT;

BEGIN;

```

**Claire:** Great, that's everything we need. Thanks for your help.

**You:** No problem, glad I could help you out.
bye bye Claire !

## Acceptance Criteria

Expand Down