Getting Max date from multiple table after INNER JOIN - mysql

I have two following tables
table 1)
ID | HOTEL ID | NAME
1 100 xyz
2 101 pqr
3 102 abc
table 2)
ID | BOOKING ID | DEPARTURE DATE | AMOUNT
1 1 2013-04-12 100
2 1 2013-04-14 120
3 1 2013-04-9 90
4 2 2013-04-14 100
5 2 2013-04-18 150
6 3 2013-04-12 100
I want to get reault in mysql such that it take the row from table two with MAX DEPARTURE DATE.
ID | BOOKING ID | DEPARTURE DATE | AMOUNT
2 1 2013-04-14 120
5 2 2013-04-18 150
6 3 2013-04-12 100


SELECT b.ID,
b.BookingID,
a.Name,
b.departureDate,
b.Amount
FROM Table1 a
INNER JOIN Table2 b
ON a.ID = b.BookingID
INNER JOIN
(
SELECT BookingID, MAX(DepartureDate) Max_Date
FROM Table2
GROUP BY BookingID
) c ON b.BookingID = c.BookingID AND
b.DepartureDate = c.Max_date
SQLFiddle Demo


Well,
SELECT * FROM `table2` ORDER BY `DEPARTURE_DATE` DESC LIMIT 0,1
should help

Related

Getting wrong data from DB when joining MySql [duplicate]

I have a table of revenue as
title_id revenue cost
1 10 5
2 10 5
3 10 5
4 10 5
1 20 6
2 20 6
3 20 6
4 20 6
when i execute this query
SELECT SUM(revenue),SUM(cost)
FROM revenue
GROUP BY revenue.title_id
it produces result
title_id revenue cost
1 30 11
2 30 11
3 30 11
4 30 11
which is ok, now i want to combine sum result with another table which has structure like this
title_id interest
1 10
2 10
3 10
4 10
1 20
2 20
3 20
4 20
when i execute join with aggregate function like this
SELECT SUM(revenue),SUM(cost),SUM(interest)
FROM revenue
LEFT JOIN fund ON revenue.title_id = fund.title_id
GROUP BY revenue.title_id,fund.title_id
it double the result
title_id revenue cost interest
1 60 22 60
2 60 22 60
3 60 22 60
4 60 22 60
I can't understand why is it double it,please help

Its doubling because you have title repeated in fund and revenue tables. This multiplies the number of records where it matches. This is pretty easy to see if you remove the aggregate functions and look at the raw data. See here
The way to get around this is to create inline views of your aggregates and join on the those results.
SELECT R.title_id,
R.revenue,
R.cost,
F.interest
FROM (SELECT title_id,
Sum(revenue) revenue,
Sum(cost) cost
FROM revenue
GROUP BY revenue.title_id) r
LEFT JOIN (SELECT title_id,
Sum(interest) interest
FROM fund
GROUP BY title_id) f
ON r.title_id = F.title_id
output
| TITLE_ID | REVENUE | COST | INTEREST |
----------------------------------------
| 1 | 30 | 11 | 30 |
| 2 | 30 | 11 | 30 |
| 3 | 30 | 11 | 30 |
| 4 | 30 | 11 | 30 |
demo

The reason for this is that you have joined the table the first derived table from the second table without grouping it. To solve the problem, group the second table (fund) and join it with the first derived table using LEFT JOIN.
SELECT b.title_id,
b.TotalRevenue,
b.TotalCost,
d.TotalInterest
FROM
(
SELECT a.title_id,
SUM(a.revenue) TotalRevenue,
SUM(a.cost) TotalCost
FROM revenue a
GROUP BY a.title_id
) b LEFT JOIN
(
SELECT c.title_id,
SUM(a.interest) TotalInterest
FROM fund c
GROUP BY c.title_id
) d ON b.title_id = d.title_id

There are two rows for each title_id in revenue table.

How to count max value in one month from 2 table

I have 2 table on my transaction
Table One
id | date | cust_id | driver_number
1 2019-01-02 1 F 3350 NN
2 2019-04-02 2 AX 111 Z
3 2019-05-02 3 S 787 X
4 2019-05-02 4 T 9090 M
5 2019-06-02 3 P 8989 L
Table Two
driver_number | price
F 3350 NN 350000
AX 111 Z 400000
S 787 X 375000
T 9090 M 900000
P 8989 L 500000
How do I count total transaction from two tables above in one month as per requested .
In example, request for total transaction in May so the result is like below
period | total
May 1275000
Thank you

Using MONTH(T1.date) = 5 and SUM(price) the expected result is achievable
SELECT MONTH(T1.date) AS Period, SUM(price) AS `Total`
FROM TableOne T1
JOIN TableTwo T2 ON T2.driver_number = T1.driver_number
WHERE MONTH(T1.date) = 5
GROUP BY MONTH(T1.date)

How to join to single row in one to many relationship in SQL?

I want to join one to many table with single row on many table by limit 1 and order by create date
tbl_cart :
id fullname
1 myname1
2 myname2
3 myname3
tbl_cart_status:
id cart_id status created_at
1 1 33 2018-09-20
2 1 34 2018-09-23
3 2 34 2018-09-21
4 1 100 2018-09-25
5 2 35 2018-09-29
How can i get output with sql like this:
I want to get lastest status of my cart by ordered with created_at column
myname cart_id status created_at
myname1 1 100 2018-09-25
myname2 2 35 2018-09-29

Think filtering for this type of query:
select c.name, cs.*
from tbl_cart c join
tbl_cart_status cs
on c.id = cs.cart_id
where cs.created_at = (select max(cs2.created_at)
from tbl_cart_status cs2
where cs2.cart_id = cs.cart_id
);

how to select the row where sum reach 1000?

id | amount
1 | 96
2 | 0.63
3 | 351.03
4 | 736
5 | 53
6 | 39
7 | 105
8 | 91
I want to get the row where sum(amount) reach 1000
please note only the row that trigger 1000

This query should do what (I think) you want:
select id, (select sum(amount)
from table1 t1
where t1.id <= table1.id) as total
from table1
having total >= 1000
limit 1
For your sample table, it gives
id total
4 1183.66

Mysql join and sum is doubling result

I have a table of revenue as
title_id revenue cost
1 10 5
2 10 5
3 10 5
4 10 5
1 20 6
2 20 6
3 20 6
4 20 6
when i execute this query
SELECT SUM(revenue),SUM(cost)
FROM revenue
GROUP BY revenue.title_id
it produces result
title_id revenue cost
1 30 11
2 30 11
3 30 11
4 30 11
which is ok, now i want to combine sum result with another table which has structure like this
title_id interest
1 10
2 10
3 10
4 10
1 20
2 20
3 20
4 20
when i execute join with aggregate function like this
SELECT SUM(revenue),SUM(cost),SUM(interest)
FROM revenue
LEFT JOIN fund ON revenue.title_id = fund.title_id
GROUP BY revenue.title_id,fund.title_id
it double the result
title_id revenue cost interest
1 60 22 60
2 60 22 60
3 60 22 60
4 60 22 60
I can't understand why is it double it,please help

Its doubling because you have title repeated in fund and revenue tables. This multiplies the number of records where it matches. This is pretty easy to see if you remove the aggregate functions and look at the raw data. See here
The way to get around this is to create inline views of your aggregates and join on the those results.
SELECT R.title_id,
R.revenue,
R.cost,
F.interest
FROM (SELECT title_id,
Sum(revenue) revenue,
Sum(cost) cost
FROM revenue
GROUP BY revenue.title_id) r
LEFT JOIN (SELECT title_id,
Sum(interest) interest
FROM fund
GROUP BY title_id) f
ON r.title_id = F.title_id
output
| TITLE_ID | REVENUE | COST | INTEREST |
----------------------------------------
| 1 | 30 | 11 | 30 |
| 2 | 30 | 11 | 30 |
| 3 | 30 | 11 | 30 |
| 4 | 30 | 11 | 30 |
demo

The reason for this is that you have joined the table the first derived table from the second table without grouping it. To solve the problem, group the second table (fund) and join it with the first derived table using LEFT JOIN.
SELECT b.title_id,
b.TotalRevenue,
b.TotalCost,
d.TotalInterest
FROM
(
SELECT a.title_id,
SUM(a.revenue) TotalRevenue,
SUM(a.cost) TotalCost
FROM revenue a
GROUP BY a.title_id
) b LEFT JOIN
(
SELECT c.title_id,
SUM(a.interest) TotalInterest
FROM fund c
GROUP BY c.title_id
) d ON b.title_id = d.title_id

There are two rows for each title_id in revenue table.