I've the following data.
What I need like below
I need to minus order by 1 with 2.
Example : (1-2) and I've display the result in order by 3.
If the branch having order_by as 1 - display as it is.
Using MySQL, how can I get this result?
You can get this result with a UNION query. The first part selects all rows from your table, the second uses a self-join to find branches which have order_by values of both 1 and 2, and subtracts their due values to get the new due value:
SELECT *
FROM data
UNION ALL
SELECT 3, d1.branch, d1.due - d2.due
FROM data d1
JOIN data d2 ON d2.branch = d1.branch AND d2.order_by = 2
WHERE d1.order_by = 1
ORDER BY branch, order_by
Demo on dbfiddle
Related
I want to get data from table where Id should be as given below in the query but instead of or I would apply and operator so lets say ID IN (5 AND 4 AND 3)
SELECT * FROM table WHERE id IN (5,4,3,1,6)
Is it possible to get data like this.
This is the sample query
SELECT PM.ContentID, PM.Author, PM.Title, PM.Journal, PM.Year, PM.Category, PM.StudyLocation, PM.FileURL from PublishedContentMaster PM join TopicContentMapping T ON T.ContentID=PM.ContentID where PM.ContentID='100' AND T.TopicID IN (16,7)
So I want which is present in both 16 and 17 that is why I need and operator not or.
I suspect that you want an aggregation query and a having clause. It would typically look something like this:
select x
from t
where id in (5, 4, 3, 1, 6)
group by x
having count(*) = 5;
In this case, x would be the column where you want five rows with the five values.
I hope I can phrase this properly - I'm not sure I've been approaching this correctly.
I am running a MySQLi query for which I need to order the results by the result of a sum (multiplicaiton) of the values in one column. The values are to 2 decimal places and are 'odds' for sporting results. As Such i can not simply sum the values from each row as the result (e.g. 1,1,1 adds to 3 but multiplies to 1) does not give me 'correct' ordering.
At present i am simply performing a sum in my query
SUM(Fav_odds) AS Total
But i'm stumped how i can get 'Total' to be the result of 'Fav_odds * number of rows' in my query.
Fav_odds | Vendor
------------------
1.2 | Name
2.1 | Name
3.2 | Name
So for Vendor called 'Name' i would like to give a multipled value for items in Fav_odds column (e.g. 1.2 * 2.1 * 3.2 = 8.064)
select round(EXP(SUM(LOG(fav_odds))),3) as fav_odds from table;
use a variable
set #miller := 1;
select orderingTotal from
(select #miller:=#miller*Fav_odds as orderingTotal
from mytable) mytotaltable
order by orderingTotal;
or it could be a matter of just saying
sum(Fav_odds) * count(Fav_odds)
if what you are saying at the end is the right way ("fav_total * the number of rows").
I'm working on improving some queries I inherited, and was curious if it was possible to do the following - given a table the_table that looks like this:
id uri
---+-------------------------
1 /foo/bar/x
1 /foo/bar/y
1 /foo/boo
2 /alpha/beta/carotine
2 /alpha/delic/ipa
3 /plastik/man/spastik
3 /plastik/man/krakpot
3 /plastik/man/helikopter
As an implicit intermediate step I'd like to group these by the 1st + 2nd tuple of uri. The results of that step would look like:
id base
---+---------------
1 /foo/bar
1 /foo/boo
2 /alpha/beta
2 /alpha/delic
3 /plastik/man
And the final result would reflect the number of unique tuple1 + tuple2 values, per unique id:
id cnt
---+-----
1 2
2 2
3 1
I can achieve these results, but not without doing a subquery (to get the results of the implicit step mentioned above), and then select/grouping out of that. Something like:
SELECT
id,
count(base) cnt
FROM (
SELECT
id,
substring_index(uri, '/', 3) AS base
FROM the_table
GROUP BY id, base
)
GROUP BY id;
My reason for wanting to avoid the subquery is that I'm working with a fairly large (20M rows) data set, and the subquery gets very expensive. Gut tells me it's not doable, but figured I'd ask SO...
There's no need for a subquery -- you can use count with distinct to achieve the same result:
SELECT
id,
count(distinct substring_index(uri, '/', 3)) AS base
FROM the_table
GROUP BY id
SQL Fiddle Demo
BTW -- this returns count of 1 for id 3 -- I assume that was a typo in your posting.
I have for example a query with return something as it
route value
1 3
2 2
3 4
4 5
5 1
then I need to put in 2 textbox the max and the min route so in sql this would be
select top 1 route from table where value=(select max(value) from table)
I add a image done in excel, how this would be.
I believe this is so easy but I dont have idea how to get it.
I got using expression, this was extactly expression
="Route "+
Convert.ToString (
Lookup(max(fields!value.Value),fields!value.Value ,fields!route.Value,"mydataset")
)
changing max for min, for the other...
thanks everyone.
I believe the query you're looking for would be:
With Min_Max_CTE as (
Select MIN(value) as Min_Value
, MAX(value) as Max_Value
From Table
)
Select Top 1 'Min' as Type
, T.route
, T.value
From Table T
Inner Join Min_Max_CTE CTE
on T.value = CTE.Min_Value
Union All
Select Top 1 'Max' as Type
, T.route
, T.value
From Table T
Inner Join Min_Max_CTE CTE
on T.value = CTE.Max_Value
Order by Type desc --This will put the Min Route first followed by the Max Route
Then, put that query into a dataset, and then create a tablix and use the Type, route, and value fields to return the minimum route and the maximum route. It should end up being set up just like your excel section with the min and max routes above.
You can do this SSRS by using a couple of separate tables. Your example data:
And two tables in the Designer:
Since the tables only have header rows, only the first row in the table will be displayed.
To make sure we get the MAX and MIN values in the two tables, each table needs to order its Dataset appropriately, i.e. by Value by descending and ascending respectively.
MAX table:
MIN table:
Which gives your expected result:
I need help with a SQL query.
I have a table with a 'state' column. 0 means closed and 1 means opened.
Different users want to be notified after there have been x consecutive 1 events.
With an SQL query, how can I tell if the last x rows of 'state' = 1?
If, for example, you want to check if the last 5 consecutive rows have a state equals to 1, then here's you could probably do it :
SELECT IF(SUM(x.state) = 5, 1, 0) AS is_consecutive
FROM (
SELECT state
FROM table
WHERE Processor = 3
ORDER BY Status_datetime DESC
LIMIT 5
) as x
If is_consecutive = 1, then, yes, there is 5 last consecutive rows with state = 1.
Edit : As suggested in the comments, you'll have to use ORDER BY in your query, to get the last nth rows.
And for more accuracy, since you have a timestamp column, you should use Status_datetime to order the rows.
You should be able to use something like this (replace the number in the HAVING with the value of x you want to check for):
SELECT Processor, OpenCount FROM
(
SELECT TOP 10 Processor, DateTime, Sum(Status) AS OpenCount
FROM YourTable
WHERE Processor = 3
ORDER BY DateTime DESC
) HAVING OpenCount >= 10