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Please find below Tables.
How to show all departments where in March 2014 there were sales of goods with a price of less than 400?
CREATE TABLE dep
(
id NUMBER (10) NOT NULL,
city VARCHAR2 (100) NOT NULL,
name VARCHAR2 (100) NOT NULL,
CONSTRAINT dep_pk PRIMARY KEY (id)
);
I guess you need below query -
SELECT D.name, SUM(cost)
FROM sales S
JOIN dep D ON S.dep_id = D.id
WHERE EXTRACT(YEAR FROM time) = 2014
AND EXTRACT(MONTH FROM time) = 3
GROUP BY D.name
HAVING SUM(cost) < 400
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select * from (
select distinct nationality,gender,regplacetype,count(gender) as total from population
where date_part('year',age(to_date(dateofbirth,'DDMMYYYY'))) BETWEEN 16 and 67 and gender = 'Man'
group by nationality,gender,regplacetype
) as man,
(
select distinct nationality,gender,regplacetype,count(nationality) as total from population
where date_part('year',age(to_date(dateofbirth,'DDMMYYYY'))) BETWEEN 16 and 57 and gender = 'female'
group by xnationality,gender,regplacetype) as female
with man as (
select distinct nationality,gender,regplacetype,count(gender) as total from population
where date_part('year',age(to_date(dateofbirth,'DDMMYYYY'))) BETWEEN 16 and 67 and gender = 'Man'
group by nationality,gender,regplacetype
) select * from man,
union
select distinct nationality,gender,regplacetype,count(nationality) as total from population
where date_part('year',age(to_date(dateofbirth,'DDMMYYYY'))) BETWEEN 16 and 57 and gender = 'female'
group by xnationality,gender,regplacetype
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Here is the "Customers" table
ID Name Country
1 A UK
2 B CN
3 C IN
4 D GB
5 E CN
6 F GB
7 H UK
8 I IN
Need a query to show number of customers for each country. GB and UK should be considered as single country.
Use a CASE expression:
SELECT (CASE WHEN country = 'GB' THEN 'UK' ELSE country END) as country,
COUNT(*), Country
FROM Customer
GROUP BY (CASE WHEN country = 'GB' THEN 'UK' ELSE country END);
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The table is called PEOPLE and has the columns: id, fname, lname, state, jobtitle, salary, cat
I want to display the 50 states, the number of people in the state with a Cat value of Y, the number of people in the state with a Cat value of N and the total number of people in the state. The four column headings should be State, Yes, No and Total.
I know that we are supposed to use sub queries but not sure how to begin.
SELECT State
, SUM(CASE WHEN Cat = 'Y' THEN 1 ELSE 0 END) as Yes
, SUM(CASE WHEN Cat = 'N' THEN 1 ELSE 0 END) No
, COUNT(*) as Total
FROM PEOPLE
GROUP BY STATE
Here:
SELECT upper(p.state) State,
(SELECT count(*) from PEOPLE p2 where p2.state = p.state and p2.cat = 'Y') Yes,
(SELECT count(*) from PEOPLE p3 where p3.state = p.state and p3.cat = 'N') No,
count(*) Total
FROM PEOPLE p
GROUP BY upper(state)
If you have any doubt about it, fell free to ask.
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Is it possible to create a totalprice column in a table which gets its answer from multiplying 2 values from 2 different tables?
e.g
orderquantity
order_id | product_code | quantity
ordertotalprice
order_id | customer_id | totalprice
products
product_Code | product_name | product_desc | productcost
I want the totalprice column to be = productcost*quantity
To query the totals per order:
SELECT orderquantity.order_id,
SUM(products.productcost * orderquantity.quantity) AS total
FROM orderquantity
INNER JOIN products ON products.product_code = orderquantity.product_code
GROUP BY orderquantity.order_id
Wrap this query in an UPDATE statement to update column totalprice in table ordertotalprice:
UPDATE ordertotalprice
SET totalprice = grouped.total
FROM (
SELECT orderquantity.order_id,
SUM(products.productcost * orderquantity.quantity) AS total
FROM orderquantity
INNER JOIN products ON products.product_code = orderquantity.product_code
GROUP BY orderquantity.order_id
) AS grouped
WHERE ordertotalprice.order_id = grouped.order_id
I am assuming here table ordertotalprice already contains the necessary records. If that is not the case, then you will need an INSERT statement instead of an UPDATE. But then I wonder where to get the customer_id from.
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This is my tables description :
Ticket
Id int pk
ShowTicketStateID_FK int
TicketStateID_FK int
TicketState
Id int
Name int
Actually, the TicketState has two foreign keys to Tickettable.
Here is some rows from Ticket table :
1 1 1
2 2 1
3 1 2
...
And here is rows for TicketState
1 'sold'
2 'reserved'
Now i want this Result set :
1 sold sold
2 reserved sold
3 sold reserved
How should I select rows from ticket table with both states name?
SELECT T.ID, S1.Name AS ShowState, S2.Name AS TicketState
FROM Ticket AS T
JOIN TicketState AS S1 ON T1.ShowTicketStateID = S1.ID
JOIN TicketState AS S2 ON T1.TicketStateID = S2.ID
The key concept is using the two different table aliases for the TicketState table in a single query. The table has to be scanned twice (speaking loosely), once for the ShowTicketStateID lookup and once for the TicketStateID lookup.