I insert rows into a table with time-stamps (time). I could have multiple rows that are identical except id and time. I want to delete all rows that are beyond 5 "iterations". I only want to keep 5 iterations of an instance's "history".
Instance = new entry for name
History = the entries for a particular name
Example:
id name value time
1 blue 15 12/1/2016
2 blue 16 12/2/2016
3 blue 12 12/3/2016
4 blue 43 12/4/2016
5 blue 12 12/5/2016
6 blue 9 12/6/2016
7 blue 33 12/7/2016
8 red 15 12/5/2016
9 red 15 12/8/2016
After Delete:
id name value time
3 blue 12 12/3/2016
4 blue 43 12/4/2016
5 blue 12 12/5/2016
6 blue 9 12/6/2016
7 blue 33 12/7/2016
8 red 15 12/5/2016
9 red 15 12/8/2016
Here was the adopted solution from the suggested almost-duplicate question:
delete l.* from table_name L inner join (
select name, group_concat(id order by time desc) grouped_value from table_name
) R on l.name=r.name and find_in_set(id,grouped_value) > 5
Related
I have built a live scoring system for a game. When the scores are entered into the MySQL database, they are entered like this...
ID userid sessionid sprintid pointvalue1 pointvalue2 pointvalue3
1 1 1 1 10 5 2
2 2 1 1 10 5 3
3 3 1 1 12 6 3
4 1 1 2 10 6 4
5 2 1 2 12 5 3
6 3 1 2 9 4 3
As you can see from the above, there is 1 session, 2 different sprints (iterations) and 3 different users. I want to display a leader board. The leader board would show (by iteration), user name (from another table), sprint, point value 1, point value 2, point value 3, sum of point value 1 cumulative for all iterations in that session. So on iteration 1, point value 1 and sum of point value 1 cumulative would be the same. But, in iteration 2, I should see a sum of point value 1 of 20 for user 1, 22 for user 2, and 21 for user 3, in the proper order (descending). I tried a subquery using a select sum, but couldn't quite get it right, and I tried a SUM(IF()), which seemed like it would be right, but it's not. I guess I need some guidance on which direction to go.
I think this query will get you the raw data you want. You will probably want to adjust the query with some form of ordering on total points, and possibly WHERE and LIMIT clauses to meet your exact needs.
SELECT s1.userid,
s1.sessionid,
s1.sprintid,
s1.pointvalue1,
s1.pointvalue2,
s1.pointvalue3,
SUM(s2.pointvalue1) AS sum_pointvalue1,
SUM(s2.pointvalue2) AS sum_pointvalue2,
SUM(s2.pointvalue3) AS sum_pointvalue3
FROM scores s1
JOIN (SELECT userid,
sessionid,
sprintid,
SUM(pointvalue1) AS pointvalue1,
SUM(pointvalue2) AS pointvalue2,
SUM(pointvalue3) AS pointvalue3
FROM scores
GROUP BY userid, sessionid, sprintid
) s2
ON s2.userid = s1.userid AND s2.sessionid = s1.sessionid AND s2.sprintid <= s1.sprintid
GROUP BY userid, sessionid, sprintid
ORDER BY sprintid
Output:
userid sessionid sprintid pointvalue1 pointvalue2 pointvalue3 sum_pointvalue1 sum_pointvalue2 sum_pointvalue3
2 1 1 10 5 3 10 5 3
3 1 1 12 6 3 12 6 3
1 1 1 10 5 2 10 5 2
2 1 2 12 5 3 22 10 6
3 1 2 9 4 3 21 10 6
1 1 2 10 6 4 20 11 6
SQLFiddle Demo
In MySQL database, I have 3 table called supplier, vehicle, and assigned table.
vehicle table:
vid vehicleName noOfSeat sid
========================================
13 x 10 28
14 x 8 28
15 x 12 28
16 x 14 29
17 x 4 29
18 x 8 30
assigned table
asgid bid sid vid did seatBooked assigned_start assigned_end
============================================================================
56 15 28 13 17 3 06/01/2018 02:01 06/01/2018 04:02
57 15 28 14 15 2 06/01/2018 02:01 06/01/2018 04:02
58 15 28 15 16 3 06/01/2018 02:01 06/01/2018 04:02
In a reservation page, I need to assign a vehicle to a selected date which is 06/01/2018 02:01 To 06/01/2018 04:02
Now I want to show all vehicle of a selected supplier as well as the number of seat from the vehicle table
But the condition is:
Those vehicles will be shown which has the number of seats available for my selected date: 6/01/2018 02:01 To 06/01/2018 04:02
For example:
It's must be shown following vehicle with the number of seats:
vid Mp pf Seat available
===========================
13 7 ( why 7? because on my selected date 3 seats booked)
14 6 ( why 6? because on my selected date 2 seats booked)
15 9 ( why 9? because on my selected date 3 seats booked)
16 14
17 4
18 8
Its something like bus ticket system.
My Current Query:
Currently, I am using the following query but it just removes those vid which is in my selected date but it's incorrect because as you can see that on my selected date few seats are available!!!
// my selected date: From = '$timestart' and To = '$timeend'
foreach ($sid as $key => $value) {
$vehicle->rowQuery("select * from vehicle where vid not in (
select vid from assigned where assigned_start BETWEEN '$timestart' AND '$timeend' AND assigned_end BETWEEN '$timestart' AND '$timeend' ) AND sid = $value ");
}
I can't imagine how can I solve it: =(
Your help is highly appreciated.
You can do something like this:
select vehicle.*, (noOfSeat -
(select sum(seatBooked)
from assigned
where sid = 28
and (assigned_start between '2018-01-06 02:01' and '2018-01-06 04:02' )
and (assigned_end between '2018-01-06 02:01' and '2018-01-06 04:02')
)) as seatsAvailable
from vehicle
having seatsAvailable > 0
http://sqlfiddle.com/#!9/c6bcb6/15
We have a hotel booking table with data as following
id room night bookingid timestamp
1 1 2018-05-01 18 2018-04-07 01:34:41
2 1 2018-05-02 18 2018-04-07 01:34:41
3 1 2018-05-05 19 2018-04-07 01:34:40
4 1 2018-05-06 19 2018-04-07 01:34:40
5 2 2018-05-01 20 2018-04-07 01:34:39
6 2 2018-05-02 20 2018-04-07 01:34:39
7 2 2018-05-03 21 2018-04-07 01:34:37
8 2 2018-05-04 21 2018-04-07 01:34:37
current php code to block the dates in the table is:
$sql_query="select * from bookings where ('$year-$month-$i' = night) AND (room=$room)";
if there is result then td color become red as the bellow image
data is shown with php as a table cells with bookings as the following :
What i want to achieve is to group the bookings to show as the following
Any idea how to do so ?
would like to group the bookings to merge the cells then make the half cell red ( checkout and checkin day )
Are there any other eloquent query method to deal with the gross process on laravel query builder?
product table
id A_product B_product
1 4,5,8,9 3,7,10,15
2 4,7,10,11 2,3,5,13
which is better does A_product column use array or json?
----search--------------------------------------
if I want to confirm if is there 3 in A_product column on id 1
I use:
$querys=DB::table('product')
->where('id','=','1')
->value('A_product');
if(in_array("3"){
$A_result='1';
}else{
$A_result='0';
};
------insert----------------------------
if I want to add new num 20 to the A_product column
I use:
$querys=DB::table('product')
->where('id','=','1')
->value('A_product');
array_push($querys,"20");
$quearorder=array_value($querys);
DB::table('product')
->where('id', 1)
->update(['A_product' => $queryorder]);
--delete--------------------------------------
if I want to delete num 3 from the A_product column
I use:
$querys=DB::table('product')
->where('id','=','1')
->value('A_product');
$key=array_search(3,$querys);
array_splice($querys,$key,1);
DB::table('product')
->where('id', 1)
->update(['A_product' => $querys]);
Its suggestion that you should store all product into separate column , with product type and the group or for user_id
id product product_type category(or for user)
1 4 A 1
2 5 A 1
3 8 A 1
4 9 A 1
5 4 A 2
6 7 A 2
7 10 A 2
8 11 A 2
1 3 B 1
2 7 B 1
3 10 B 1
4 15 B 1
5 2 B 2
6 3 B 2
7 5 B 2
8 13 B 2
Then you can easily apply CRUD operation
I'm trying to Calculate Income Points for MLM network Users (i.e).,
I'm having five types of kits such as Rs.0/-, Rs.1000/-, Rs.2000/-, Rs.4000/-, Rs.10000/- .
Once the kit is purchased a unique pin and user id will generate for each individual kit like
If 2 number of 2000/- kit purchased means userid and pin will be
2000100 539fdda37c435 and
2000101 5395b0d8b66d1 .....
Then Based on new user sponsor id(Sponsor id will be old user), registration will be proceed with Group left and right.
Now what's my problem is While calculating income point of a user how can i take their children user from top to bottom. I'd strucked in MYSQL Query.
For Example.,
now how can i get each node's value for a parent node(1) to root node(12) from this dynamic tree in php ??
I struck in this loop concept.,
Thanks IN Advance.,
database architecture
id par lev lef rgt status wallet userstatus
1 1 1 2 3 1 0 0
2 2 2 4 5 1 0 0
6 3 2 6 7 1 0 0
8 4 3 8 9 1 0 0
9 5 3 10 11 1 0 0
10 6 3 12 13 1 0 0
11 7 3 0 0 1 0 0