Pls help to tune this query
select
substr(Extend(current,year to second)- extend(outr.eventDateTime,year to second)+INTERVAL(300) MINUTE(3) TO MINUTE,-8) as duration,
else 'Hold' end as state
from
A as outr,
B as rs
where
eventDateTime = (select max(eventDateTime) from A as innr where outr.aID=innr.aID and outr.pID=innr.pID)
and eventDateTime >= Date(current)
and rs.rID = outr.aID
and rs.pID = outr.pID
order by rName
For starters, add this index:
INDEX(aid, pid)
This smells like a "groupwise max". See the tag I added.
Related
I have been trying to make this work for hours but I can't really find a way to do it. I have a MySQL script that I need to migrate to MS SQL 2014, however, I can't seem to make it work. As far as I have understood, the big issue is that MySQL allows this kind of instructions:
SELECT #row_number = #row_number + 1, hora_int FROM table1;
where you assign a value at the same time you retrieve data, but MS SQL does not.
I have a relatively big script which has that issue:
SELECT GLOBAL.year, GLOBAL.month, '1111111' as metric_id, GLOBAL.margin as metric_value FROM (SELECT A.year,
A.month,
CASE
WHEN A.month = 1 THEN (#csum_fdo := A.imp)
ELSE (#csum_fdo := #csum_fdo + A.imp) END as margin
FROM (SELECT Act.year, Act.month, Act.imp - Pas.imp as imp
FROM (SELECT year(tie.date) as year, month(tie.date) as month, sum(importe) as imp
FROM accounting con,
dim_time tie,
dim_account cta
WHERE con.account_date = tie.date
AND con.account = cta.nivel_10
AND cta.level_id = '2'
AND con.subtype_id <> 'O'
GROUP BY year(tie.date),
month(tie.date)) Act,
(SELECT year(tie.date) as year, month(tie.date) as month, sum(importe) * -1 as imp
FROM accounting con,
dim_time tie,
dim_account cta
WHERE con.account_date = tie.date
AND con.account = cta.nivel_10
AND cta.level_id = '3'
AND con.subtype_id <> 'O'
GROUP BY year(tie.date),
month(tie.date)) Pas
WHERE Act.year = Pas.year
AND Act.month = Pas.month) A,
(SELECT #csum_fdo := 0) E) GLOBAL
Can anybody point me in the direction of what I have to do to recreate the code in MS SQL? Thank you all in advance
In SQL Server and (MyQL 8+), you use window functions. The equivalent of:
SELECT #row_number = #row_number + 1, hora_int
FROM table1
ORDER BY col;
is:
SELECT ROW_NUMBER() OVER (ORDER BY col), hora_int
FROM table1;
If you provide sample data and desired results, it is much easier to figure out what functions you really need.
My big problem lied in this line:
CASE
WHEN A.month = 1 THEN (#csum_fdo := A.imp)
ELSE (#csum_fdo := #csum_fdo + A.imp) END as margin
but as Gordon Linoff pointed me. this problem could be solved with window functions, the right translation od that function is:
SUM(A.imp) OVER(PARTITION BY A.Year ORDER BY A.month) as margin
it ended up being easier than I thought
Thanks a lot and I hope it can help others as well
Hello I have this query that i am trying to execute and i keep getting this error "Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression.", Kindly help please.
DECLARE #NUMCOUNT BIT
Select #NUMCOUNT = (SELECT
CASE WHEN
(SELECT COUNT(R5REQUISLINES.RQL_REQ)
WHERE R5REQUISLINES.RQL_STATUS IN ('A')
) IN
(SELECT COUNT(R5REQUISLINES.RQL_REQ)
WHERE R5REQUISLINES.RQL_STATUS IN ( 'A','C') ) THEN 1 else 0 END AS NUMCOUNT1
FROM R5REQUISLINES JOIN
R5REQUISITIONS ON R5REQUISLINES.RQL_REQ = R5REQUISITIONS.REQ_CODE
GROUP BY R5REQUISLINES.RQL_REQ, R5REQUISITIONS.REQ_CODE,R5REQUISLINES.RQL_STATUS
)
IF #NUMCOUNT = '1'
begin
UPDATE R5REQUISITIONS
SET R5REQUISITIONS.REQ_STATUS = 'CP'
end
Ok, it sounds like what you actually want to do is update R5REQUISITIONS when there is no RQL_STATUS = 'C' in R5REQUISLINES, since you said you want to count the records where the RQL_STATUS is A and where it's A or C, and then do the update if the counts are the same.. You can greatly simplify this task with the following query:
UPDATE r5
SET r5.REQ_STATUS = 'CP'
FROM R5REQUISITIONS r5
WHERE NOT EXISTS (SELECT 1 FROM R5REQUISLINES r5q WHERE r5q.RQL_REQ = r5.REQ_CODE AND r5q.RQL_STATUS = 'C')
Your 'SELECT CASE' is returning more than 1 record, so it can't be assigned to #NUMBER. Either fix the sub-query to only return the record your looking for or hack it to return only 1 with a 'LIMIT 1' qualification.
I don't know what your data looks like so I can't tell you why your case subquery returns more records than you think it should.
Try running this and see what it returns, that will probably tell you wall you need to know:
SELECT
CASE WHEN
(SELECT COUNT(R5REQUISLINES.RQL_REQ)
WHERE R5REQUISLINES.RQL_STATUS IN ('A')
) IN
(SELECT COUNT(R5REQUISLINES.RQL_REQ)
WHERE R5REQUISLINES.RQL_STATUS IN ( 'A','C')
)
THEN 1
ELSE 0
END AS NUMCOUNT1
FROM R5REQUISLINES JOIN
R5REQUISITIONS ON R5REQUISLINES.RQL_REQ = R5REQUISITIONS.REQ_CODE
GROUP BY R5REQUISLINES.RQL_REQ, R5REQUISITIONS.REQ_CODE,R5REQUISLINES.RQL_STATUS
If there is more than 1 row returned, that's where your problem is.
I have a table with 3 columns( name, objectroot_dn, distinguishedname). Here distinguishedname is like a parent to objectroot_dn. I have to find whether for each objectroot_dn is there a child exists or not?
I can do this using the query below. It will return True if there is a child, False if there is not. But my problem is when the total dataset gets increased it takes lots of time.
For example, If the total number of row is 50,000 then it takes 10 mins for this query to complete.
Since I'm using a framework for different database, I can't index the columns.
SELECT
name,
objectroot_dn,
distinguishedname,
CASE
WHEN (SELECT count(*)
FROM (SELECT name
FROM elaoucontainergeneraldetails
WHERE objectroot_dn = dn.distinguishedname
LIMIT 1) AS tabel1) > 0
THEN 'True'
ELSE 'False'
END
FROM elaoucontainergeneraldetails AS dn
WHERE objectroot_dn = 'SOME_VALUE';
Please let me know how can I increase the speed of this query.
Thanks in advance. Appreciate all help.
You can have the same solution using left join or exists:
SELECT
dn.name,
dn.objectroot_dn,
dn.distinguishedname,
CASE
WHEN dn_in.objectroot_dn is not null
THEN 'True'
ELSE 'False'
END
FROM elaoucontainergeneraldetails AS dn
LEFT JOIN elaoucontainergeneraldetails dn_in on dn_in.objectroot_dn = dn.distinguishedname
WHERE objectroot_dn = 'SOME_VALUE';
EXISTS(subquery) yields a boolean value:
SELECT dn.name
, dn.objectroot_dn
, dn.distinguishedname
, EXISTS (SELECT *
FROM elaoucontainergeneraldetails nx
WHERE nx.objectroot_dn = dn.distinguishedname
) AS truth_value
FROM elaoucontainergeneraldetails AS dn
WHERE dn.objectroot_dn = 'SOME_VALUE'
;
I want to make a query where where i first check the current date with the date in a column and then base on that I am writing my case. this query is working fine individually but when
i am combining them its not working.
The queires are
SELECT MONTH(CURRENT_DATE)= SUBSTRING(yearmonth,6) FROM dp;
SELECT i,
CASE
WHEN DAY(CURRENT_DATE) =1 THEN `d1_v`
WHEN DAY(CURRENT_DATE) =2 THEN `d1_v`
END VALUE
FROM dp;
combined query..
SELECT i,
CASE
WHEN((MONTH(CURRENT_DATE ))= SUBSTRING(yearmonth,6) THEN
(CASE
WHEN DAY(CURRENT_DATE) = 1 THEN `d1_v`
WHEN DAY(CURRENT_DATE) = 2 THEN `d1_v`
END VALUE)END)Y
FROM dp
please guide me
You've to delete the '(' after the THEN:
SELECT i,
CASE
WHEN ((MONTH(CURRENT_DATE )) = SUBSTRING(yearmonth,6))THEN
CASE
WHEN DAY(CURRENT_DATE) = 1 THEN `day1_value`
WHEN DAY(CURRENT_DATE) = 2 THEN `day1_value`
END
END Y
FROM dp;
The output from the sqlfiddle is 5,null right now.
Hope this work for you.
The sqlfiddle is: http://sqlfiddle.com/#!2/e59c5/10
How can I group a query result by a field that is not saved in the database.
For example I want to group the result by duration which is came from subtraction of start time and end time.
here is how i find out the duration
date1= $row_TicketRS['CloseDate'];
$date2 = $row_TicketRS['OpenDate'];
$diff = abs(strtotime($date2) - strtotime($date1));
$days = floor(($diff - $years * 365*60*60*24 - $months*30*60*60*24)/ (60*60*24));
if ( $days > 0)
{
$time1 = $row_TicketRS['OpenTime'];
$time2= $row_TicketRS['CloseTime'];
$t1=($time1);
$t2=($time2);
$end=('14:30');
$start=('07:30');
$n = $end- $t1;
$n2 = $t2- $start;
$Hours2 = floor(($n+$n2)+(($days-1)*7));
echo $Hours2.' Hours';
but know i do not know how to add it to the query
here is my query
$strQuery = "SELECT count(`ticket`.TicketID) as TotOutput, department.`DeptName` FROM `ticket`, `user`, department where ticket.OwnerID = user.EmpNo and user.`DepartmentID` = department.`DepartmentID` and OpenDate between'".$DateFrom."' And '".$DateTo."'"
It'd be better to have details, but a derived table/inline view would allow you to group by a computed value:
SELECT x.duration,
COUNT(*)
FROM (SELECT t.col,
t.end_time - t.start_time AS duration
FROM YOUR_TABLE t) x
GROUP BY x.duration
How about adding that computed value to the query with an alias like this:
SELECT some_fields, end - start AS duration FROM table ORDER BY duration
dont put alias for hidden column , use directly
exmaple:
SELECT id, FLOOR(value/100)
FROM tbl_name
GROUP BY id, FLOOR(value/100);
Reference
MySQL permits expressions in GROUP BY
clauses, so the alias is unnecessary: