runtimetask Views, temp tables & triggers · medium
A reusable customer totals view
Create view customer_totals with customer_id, orders (distinct sale orders) and net_sales (all lines, rounded to 2) for identified customers. Return the 10 customers with the highest net_sales from the view, highest first (ties by customer_id).
what to return
- Columns
customer_idordersnet_salesin this order- Rows
- 10 rows · in the order asked
- Skill
- Define a reusable query object. Refresher: Views: reusable query definitions →
expected result
Your query should return exactly these columns and values. Run it and compare.
expected result10 rows · in this order
| customer_id | orders | net_sales |
|---|---|---|
| 18102 | 145 | 570380.61 |
| 14298 | 82 | 90489.31 |
| 15838 | 34 | 72727.41 |
first 3 of 10 rows
data you can query
Retail dataset: the first 6 rows of each table. Under each column name: the kind of value it holds, and which table it links to. Your queries run on all rows.
orders6 columns · 6,722 rows
| order_idnumber · unique id | invoice_notext | customer_idnumber · links to customers | ordered_atdate & time | countrytext | order_typetext |
|---|---|---|---|---|---|
| 1 | 489438 | 18102 | 2009-12-01 09:24:00 | United Kingdom | sale |
| 2 | 489517 | 16329 | 2009-12-01 11:34:00 | United Kingdom | sale |
| 3 | C489528 | 16714 | 2009-12-01 11:50:00 | United Kingdom | cancellation |
| 4 | 489529 | 17984 | 2009-12-01 11:51:00 | United Kingdom | sale |
| 5 | 489532 | 13394 | 2009-12-01 11:58:00 | United Kingdom | sale |
| 6 | 489540 | 12913 | 2009-12-01 12:18:00 | United Kingdom | sale |
- order_idnumber · unique id
- 1
- invoice_notext
- 489438
- customer_idnumber · links to customers
- 18102
- ordered_atdate & time
- 2009-12-01 09:24:00
- countrytext
- United Kingdom
- order_typetext
- sale
- order_idnumber · unique id
- 2
- invoice_notext
- 489517
- customer_idnumber · links to customers
- 16329
- ordered_atdate & time
- 2009-12-01 11:34:00
- countrytext
- United Kingdom
- order_typetext
- sale
- order_idnumber · unique id
- 3
- invoice_notext
- C489528
- customer_idnumber · links to customers
- 16714
- ordered_atdate & time
- 2009-12-01 11:50:00
- countrytext
- United Kingdom
- order_typetext
- cancellation
- order_idnumber · unique id
- 4
- invoice_notext
- 489529
- customer_idnumber · links to customers
- 17984
- ordered_atdate & time
- 2009-12-01 11:51:00
- countrytext
- United Kingdom
- order_typetext
- sale
- order_idnumber · unique id
- 5
- invoice_notext
- 489532
- customer_idnumber · links to customers
- 13394
- ordered_atdate & time
- 2009-12-01 11:58:00
- countrytext
- United Kingdom
- order_typetext
- sale
- order_idnumber · unique id
- 6
- invoice_notext
- 489540
- customer_idnumber · links to customers
- 12913
- ordered_atdate & time
- 2009-12-01 12:18:00
- countrytext
- United Kingdom
- order_typetext
- sale
first 6 of 6,722 rows · your queries use all of them
order_items7 columns · 125,613 rows
| order_item_idnumber · unique id | order_idnumber · links to orders | line_numbernumber | stock_codetext · links to products | descriptiontext | quantitynumber | unit_pricedecimal |
|---|---|---|---|---|---|---|
| 1 | 1 | 1 | 21329 | DINOSAURS WRITING SET | 28 | 0.98 |
| 2 | 1 | 2 | 21252 | SET OF MEADOW FLOWER STICKERS | 30 | 1.69 |
| 3 | 1 | 3 | 21100 | CHARLIE AND LOLA CHARLOTTE BAG | 30 | 1.15 |
| 4 | 1 | 4 | 21033 | JUMBO BAG CHARLIE AND LOLA TOYS | 30 | 2 |
| 5 | 1 | 5 | 20711 | JUMBO BAG TOYS | 60 | 1.3 |
| 6 | 1 | 6 | 21410 | COUNTRY COTTAGE DOORSTOP GREEN | 32 | 2.5 |
- order_item_idnumber · unique id
- 1
- order_idnumber · links to orders
- 1
- line_numbernumber
- 1
- stock_codetext · links to products
- 21329
- descriptiontext
- DINOSAURS WRITING SET
- quantitynumber
- 28
- unit_pricedecimal
- 0.98
- order_item_idnumber · unique id
- 2
- order_idnumber · links to orders
- 1
- line_numbernumber
- 2
- stock_codetext · links to products
- 21252
- descriptiontext
- SET OF MEADOW FLOWER STICKERS
- quantitynumber
- 30
- unit_pricedecimal
- 1.69
- order_item_idnumber · unique id
- 3
- order_idnumber · links to orders
- 1
- line_numbernumber
- 3
- stock_codetext · links to products
- 21100
- descriptiontext
- CHARLIE AND LOLA CHARLOTTE BAG
- quantitynumber
- 30
- unit_pricedecimal
- 1.15
- order_item_idnumber · unique id
- 4
- order_idnumber · links to orders
- 1
- line_numbernumber
- 4
- stock_codetext · links to products
- 21033
- descriptiontext
- JUMBO BAG CHARLIE AND LOLA TOYS
- quantitynumber
- 30
- unit_pricedecimal
- 2
- order_item_idnumber · unique id
- 5
- order_idnumber · links to orders
- 1
- line_numbernumber
- 5
- stock_codetext · links to products
- 20711
- descriptiontext
- JUMBO BAG TOYS
- quantitynumber
- 60
- unit_pricedecimal
- 1.3
- order_item_idnumber · unique id
- 6
- order_idnumber · links to orders
- 1
- line_numbernumber
- 6
- stock_codetext · links to products
- 21410
- descriptiontext
- COUNTRY COTTAGE DOORSTOP GREEN
- quantitynumber
- 32
- unit_pricedecimal
- 2.5
first 6 of 125,613 rows · your queries use all of them
solution.sql
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