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deepsense.ai sp. z o.o. 38

debit_card_specializing

Please list the product description of the products consumed in September, 2013.

September 2013 refers to 201309; 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.

SELECT T3.Description FROM transactions_1k AS T1 INNER JOIN yearmonth AS T2 ON T1.CustomerID = T2.CustomerID INNER JOIN products AS T3 ON T1.ProductID = T3.ProductID WHERE T2.Date = '201309'

simple

debit_card_specializing

Please list the countries of the gas stations with transactions taken place in June, 2013.

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;

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'

moderate

debit_card_specializing

Please list the chains of the gas stations with transactions in euro.

SELECT DISTINCT T3.ChainID FROM transactions_1k AS T1 INNER JOIN customers AS T2 ON T1.CustomerID = T2.CustomerID INNER JOIN gasstations AS T3 ON T1.GasStationID = T3.GasStationID WHERE T2.Currency = 'EUR'

simple

debit_card_specializing

Please list the product description of the products bought in transactions in euro.

SELECT DISTINCT T1.ProductID, T3.Description FROM transactions_1k AS T1 INNER JOIN customers AS T2 ON T1.CustomerID = T2.CustomerID INNER JOIN products AS T3 ON T1.ProductID = T3.ProductID WHERE T2.Currency = 'EUR'

simple

debit_card_specializing

What is the average total price of the transactions taken place in January, 2012?

In January, 2012 means Date contains '2012-01'

SELECT AVG(Amount) FROM transactions_1k WHERE Date LIKE '2012-01%'

simple

debit_card_specializing

Among the customers who paid in euro, how many of them have a monthly consumption of over 1000?

Pays in euro = Currency = 'EUR'.

SELECT COUNT(*) FROM yearmonth AS T1 INNER JOIN customers AS T2 ON T1.CustomerID = T2.CustomerID WHERE T2.Currency = 'EUR' AND T1.Consumption > 1000.00

simple

debit_card_specializing

Please list the product descriptions of the transactions taken place in the gas stations in the Czech Republic.

Czech Republic can be represented as the Country value in the gasstations table is 'CZE';

SELECT DISTINCT T3.Description FROM transactions_1k AS T1 INNER JOIN gasstations AS T2 ON T1.GasStationID = T2.GasStationID INNER JOIN products AS T3 ON T1.ProductID = T3.ProductID WHERE T2.Country = 'CZE'

moderate

debit_card_specializing

Please list the disparate time of the transactions taken place in the gas stations from chain no. 11.

SELECT DISTINCT T1.Time FROM transactions_1k AS T1 INNER JOIN gasstations AS T2 ON T1.GasStationID = T2.GasStationID WHERE T2.ChainID = 11

simple

debit_card_specializing

How many transactions taken place in the gas station in the Czech Republic are with a price of over 1000?

Gas station in the Czech Republic implies that Country = 'CZE'

SELECT COUNT(T1.TransactionID) FROM transactions_1k AS T1 INNER JOIN gasstations AS T2 ON T1.GasStationID = T2.GasStationID WHERE T2.Country = 'CZE' AND T1.Price > 1000

simple

debit_card_specializing

Among the transactions made in the gas stations in the Czech Republic, how many of them are taken place after 2012/1/1?

Czech Republic can be represented as the Country value in the gasstations table is 'CZE'

SELECT COUNT(T1.TransactionID) FROM transactions_1k AS T1 INNER JOIN gasstations AS T2 ON T1.GasStationID = T2.GasStationID WHERE T2.Country = 'CZE' AND STRFTIME('%Y', T1.Date) >= '2012'

moderate

debit_card_specializing

What is the average total price of the transactions taken place in gas stations in the Czech Republic?

Gas station in the Czech Republic implies that Country = 'CZE'

SELECT AVG(T1.Price) FROM transactions_1k AS T1 INNER JOIN gasstations AS T2 ON T1.GasStationID = T2.GasStationID WHERE T2.Country = 'CZE'

simple

debit_card_specializing

For the customers who paid in the euro, what is their average total price of the transactions?

SELECT AVG(T1.Price) FROM transactions_1k AS T1 INNER JOIN gasstations AS T2 ON T1.GasStationID = T2.GasStationID INNER JOIN customers AS T3 ON T1.CustomerID = T3.CustomerID WHERE T3.Currency = 'EUR'

simple

debit_card_specializing

Which customer paid the most in 2012/8/25?

'2012/8/25' can be represented by '2012-08-25'

SELECT CustomerID FROM transactions_1k WHERE Date = '2012-08-25' GROUP BY CustomerID ORDER BY SUM(Price) DESC LIMIT 1

simple

debit_card_specializing

Which country's gas station had the first paid cusomer in 2012/8/25?

'2012/8/25' can be represented by '2012-08-25'

SELECT T2.Country FROM transactions_1k AS T1 INNER JOIN gasstations AS T2 ON T1.GasStationID = T2.GasStationID WHERE T1.Date = '2012-08-25' ORDER BY T1.Time DESC LIMIT 1

simple

debit_card_specializing

What kind of currency did the customer paid at 16:25:00 in 2012/8/24?

'2012/8/24' can be represented by '2012-08-24';

SELECT DISTINCT T3.Currency FROM transactions_1k AS T1 INNER JOIN gasstations AS T2 ON T1.GasStationID = T2.GasStationID INNER JOIN customers AS T3 ON T1.CustomerID = T3.CustomerID WHERE T1.Date = '2012-08-24' AND T1.Time = '16:25:00'

simple

debit_card_specializing

What segment did the customer have at 2012/8/23 21:20:00?

'2012/8/23' can be represented by '2012-08-23'

SELECT T2.Segment FROM transactions_1k AS T1 INNER JOIN customers AS T2 ON T1.CustomerID = T2.CustomerID WHERE T1.date = '2012-08-23' AND T1.time = '21:20:00'

simple

debit_card_specializing

How many transactions were paid in CZK in the morning of 2012/8/26?

'2012/8/26' can be represented by '2012-08-26'; The morning refers to the time before '13:00:00'

SELECT COUNT(T1.TransactionID) FROM transactions_1k AS T1 INNER JOIN customers AS T2 ON T1.CustomerID = T2.CustomerID WHERE T1.Date = '2012-08-26' AND T1.Time < '13:00:00' AND T2.Currency = 'CZK'

moderate

debit_card_specializing

For the earliest customer, what segment did he/she have?

SELECT T2.Segment FROM transactions_1k AS T1 INNER JOIN customers AS T2 ON T1.CustomerID = T2.CustomerID ORDER BY Date ASC LIMIT 1

simple

debit_card_specializing

For the deal happened at 2012/8/24 12:42:00, which country was it?

'2012/8/24 12:42:00' can refer to date = '2012-08-24' AND T1.time = '12:42:00' in the database

SELECT T2.Country FROM transactions_1k AS T1 INNER JOIN gasstations AS T2 ON T1.GasStationID = T2.GasStationID WHERE T1.Date = '2012-08-24' AND T1.Time = '12:42:00'

simple

debit_card_specializing

What was the product id of the transaction happened at 2012/8/23 21:20:00?

'2012/8/23 21:20:00' can refer to date = '2012-08-23' AND T1.time = '21:20:00' in the database

SELECT T1.ProductID FROM transactions_1k AS T1 INNER JOIN gasstations AS T2 ON T1.GasStationID = T2.GasStationID WHERE T1.Date = '2012-08-23' AND T1.Time = '21:20:00'

simple

debit_card_specializing

For the customer who paid 124.05 in 2012/8/24, how much did he/she spend during the January of 2012? And what is the date and expenses exactly?

'2012/8/24' can be represented by '2012-08-24'; expense and the consumption has the similar meaning.

SELECT T1.CustomerID, T2.Date, T2.Consumption FROM transactions_1k AS T1 INNER JOIN yearmonth AS T2 ON T1.CustomerID = T2.CustomerID WHERE T1.Date = '2012-08-24' AND T1.Price = 124.05 AND T2.Date = '201201'

moderate

debit_card_specializing

For all the transactions happened during 8:00-9:00 in 2012/8/26, how many happened in CZE?

Czech Republic can be represented as the Country value in the gasstations table is 'CZE'; '2012/8/26' can be represented by '2012-08-26'; during 8:00-9:00 can be represented as Time BETWEEN '08:00:00' AND '09:00:00'

SELECT COUNT(T1.TransactionID) FROM transactions_1k AS T1 INNER JOIN gasstations AS T2 ON T1.GasStationID = T2.GasStationID WHERE T1.Date = '2012-08-26' AND T1.Time BETWEEN '08:00:00' AND '09:00:00' AND T2.Country = 'CZE'

moderate

debit_card_specializing

There's one customer spent 214582.17 in the June of 2013, which currency did he/she use?

June of 2013 means Date contains '201306' in the yearmonth.date of the database

SELECT T2.Currency FROM yearmonth AS T1 INNER JOIN customers AS T2 ON T1.CustomerID = T2.CustomerID WHERE T1.Date = '201306' AND T1.Consumption = 214582.17

simple

debit_card_specializing

Which country was the card owner of No.667467 in?

SELECT T2.Country FROM transactions_1k AS T1 INNER JOIN gasstations AS T2 ON T1.GasStationID = T2.GasStationID WHERE T1.CardID = '667467'

simple

debit_card_specializing

What's the nationality of the customer who spent 548.4 in 2012/8/24?

'2012/8/24' can be represented by '2012-08-24'

SELECT T2.Country FROM transactions_1k AS T1 INNER JOIN gasstations AS T2 ON T1.GasStationID = T2.GasStationID WHERE T1.Date = '2012-08-24' AND T1.Price = 548.4

simple

debit_card_specializing

What is the percentage of the customers who used EUR in 2012/8/25?

'2012/8/25' can be represented by '2012-08-25'

SELECT CAST(SUM(IIF(T2.Currency = 'EUR', 1, 0)) AS FLOAT) * 100 / COUNT(T1.CustomerID) FROM transactions_1k AS T1 INNER JOIN customers AS T2 ON T1.CustomerID = T2.CustomerID WHERE T1.Date = '2012-08-25'

simple

debit_card_specializing

For the customer who paid 634.8 in 2012/8/25, what was the consumption decrease rate from Year 2012 to 2013?

'2012/8/24' can be represented by '2012-08-24'; Consumption decrease rate = (consumption_2012 - consumption_2013) / consumption_2012

SELECT CAST(SUM(IIF(SUBSTR(Date, 1, 4) = '2012', Consumption, 0)) - SUM(IIF(SUBSTR(Date, 1, 4) = '2013', Consumption, 0)) AS FLOAT) / SUM(IIF(SUBSTR(Date, 1, 4) = '2012', Consumption, 0)) FROM yearmonth WHERE CustomerID = ( SELECT T1.CustomerID FROM transactions_1k AS T1 INNER JOIN gasstations AS T2 ON T1.GasStationID = T2.GasStationID WHERE T1.Date = '2012-08-25' AND T1.Price = 634.8 )

challenging

debit_card_specializing

Which gas station has the highest amount of revenue?

SELECT GasStationID FROM transactions_1k GROUP BY GasStationID ORDER BY SUM(Price) DESC LIMIT 1

simple

debit_card_specializing

What is the percentage of "premium" against the overall segment in Country = "SVK"?

SELECT CAST(SUM(IIF(Country = 'SVK' AND Segment = 'Premium', 1, 0)) AS FLOAT) * 100 / SUM(IIF(Country = 'SVK', 1, 0)) FROM gasstations

simple

debit_card_specializing

What is the amount spent by customer "38508" at the gas stations? How much had the customer spent in January 2012?

January 2012 refers to the Date value = '201201'

SELECT SUM(T1.Price) , SUM(IIF(T3.Date = '201201', T1.Price, 0)) 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 T1.CustomerID = '38508'

moderate

debit_card_specializing

Which are the top five best selling products? Please state the full name of them.

Description of products contains full name

SELECT T2.Description FROM transactions_1k AS T1 INNER JOIN products AS T2 ON T1.ProductID = T2.ProductID ORDER BY T1.Amount DESC LIMIT 5

simple

debit_card_specializing

Who is the top spending customer and how much is the average price per single item purchased by this customer? What currency was being used?

average price per single item = Total(price) / Total(amount)

SELECT T2.CustomerID, SUM(T2.Price / T2.Amount), T1.Currency FROM customers AS T1 INNER JOIN transactions_1k AS T2 ON T1.CustomerID = T2.CustomerID WHERE T2.CustomerID = ( SELECT CustomerID FROM yearmonth ORDER BY Consumption DESC LIMIT 1 ) GROUP BY T2.CustomerID, T1.Currency

moderate

debit_card_specializing

Which country had the gas station that sold the most expensive product id No.2 for one unit?

SELECT T2.Country FROM transactions_1k AS T1 INNER JOIN gasstations AS T2 ON T1.GasStationID = T2.GasStationID WHERE T1.ProductID = 2 ORDER BY T1.Price DESC LIMIT 1

simple

debit_card_specializing

For all the people who paid more than 29.00 per unit of product id No.5. Give their consumption status in the August of 2012.

August of 2012 refers to the Date value = '201208' ; Price per unit of product = Price / Amount;

SELECT T2.Consumption FROM transactions_1k AS T1 INNER JOIN yearmonth AS T2 ON T1.CustomerID = T2.CustomerID WHERE T1.Price / T1.Amount > 29.00 AND T1.ProductID = 5 AND T2.Date = '201208'

moderate