I have a query, Im trying to select the maximum value from the summer period (nov-april down here) but it only gives me values from nov-dec with this query. Any ideas why?
SELECT TOP 10 Value, DateTime
FROM history
WHERE Tagname = #Tag
AND
((DateTime >= #StartYear AND DateTime < #StartWinter)
OR
(DateTime >= #FinishWinter AND DateTime < #FinishYear))
ORDER BY Value DESC
(DateTime >= startYear AND datetime < startwinter) gives you all results between jan and april 2009.
(Datetime > finishwinter and datetime < finishyear) gives all results in nov dec 09.
So, you're selecting top 10 from Jan Feb March April Nov Dec 2009. If that's what you want to select from, and you're only getting values in Nov Dec 2009, check to see that there should be values in the other months?
If #startwinter isn't year-sensitive you might also get jan-apr 2010.
Shouldn't you use a 'ORDER BY' when using 'TOP 10'?
And what locale do you live in, or, to rephrase it: what are reasonable dates for (#StartYear, #StartWinter, #FinishWinter, #FinishYear)
In Europe I expect:
StartYear = 2010-01-01
FinishYear= 2010-12-31
StartWinter=2010-12-20 (about)
FinishWinter=2010-03-20 (about)
So the first period would go from 2010-01-01 to 2010-12-20 (about) and the second from March 2010 to End of year.
So this would include the whole year, and most of it, from 03.20 to 12.20 double.
Hey thanks for the help everyone, it seems this is a problem with our historian (a linked db from sql server) so Ill take the issue up with them. I tried the query on a regular mssql db and it seeems fine...
Related
I have a DimCalendar dimension and I want to create a custom column on top of this which will be used as a "Sort By Column" in PowerBI report.
The sorting order should be Jan 2015, Jan 2016, Jan 2017, Feb 2015, Feb 2016, Feb 2017 and so on.
Hence, can someone help me write a SQL statement to create a column which will rank the numbers in the above sorting order?
Thanks.
[UPDATE]
Sample data - I have taken only first two dates from entire month.
The customer sort can be set by using the year and month. In many databases, you can define it as:
update dimCalendar
set customsort = month(date) * 10000 + year(date);
The ANSI standard syntax would be:
update dimCalendar
set customsort = extract(month from date) * 10000 + extract(year from date);
You can concatenate year part and month part of date.
In Ms SQL server you can use
Datepart (year, date)+"/" + Datepart(month,date)
I'm executing the next query in sql server 2012.
select *
from table
where date > convert(date, '2015/02/12')
order by date asc
but I'm getting the next set:
2015-02-12 06:40:42.000
2015-02-12 06:45:44.000
2015-02-12 06:48:15.000
2015-02-12 07:06:28.000
2015-02-12 07:26:46.000
...
I can fix this by changing the date to '2015/02/13', but I have the doubt about this behavior, why am I getting dates from feb 12 when I am specifying that I need only later dates ?. I also tried using cast('2015/02/12' as date), but I could not have the answer I was looking for
Because dates without times are intepreted as 12:00 midnight on that date. If you want only dates after February 12, 2015, then select all dates greater than or equal to February 13, 2015 (which again will be interpreted as midnight on February 13th).
select *
from table
where date >= convert(date, '2015/02/13')
order by date asc
why am I getting dates from feb 12 when I am specifying that I need only later dates ?
You're not specifying that you need only dates after Feb 12. You're asking for every row in which the value in the "date" column is greater than '2015-02-12'.
The value '2015-02-12 06:40:42.000' is greater than '2015-02-12'.
When comparing the date 2015/02/12 with your datetime data, this will implicitly compare the converted date 2015-02-12 00:00:000, the date at the beginning of the day with all of your data in column date.
But you are actually comparing datetime data, which has a time part as well, which gets compared.
And because you're comparing the beginning of the day (2015-02-12 00:00:000) with a value which is after it, for example 2015-02-12 06:40:42, all of the dates from will be displayed, because 6:40 AM is after (greater than) 0:00 AM.
Try this:
SELECT *
FROM TABLE
WHERE DATE >= DATEADD(SECOND, -1, '2015/02/13')
jarlh is right, though I'll clarify a little. Each of the "dates" you show above fall after 12:00 midnight starting 2015-02-12. They are actually timestamps.
If you don't want to see anything for the day specified in the filter, you add a day and use the greater-than-or-equal-to (>=) operator.
SELECT *
FROM table
WHERE (date >= DATEADD(d, 1, CONVERT(date, '2015/02/12')))
ORDER BY date ASC
I'm using SSRS 2008r2 to generate reports. Using following WHERE statement in SQL query
WHERE (NonPMJobs.npmJobCreateDate >= #Created_Parameter) AND
(NonPMJobs.npmJobCreateDate <= #Created_Parameter2)
I'm using parameters with the data type of DateTime. Users then select day from a calendar. I want to get results where jobs have been created between date 1 (#Created_Parameter) AND date 2 (#Created_Parameter2) INCLUSIVE.
But results being returned do not include the second date (#Created_Parameter2). If I select 01/07/2013 - 05/07/2013 I get 01, 02, 03, 04 but no 05. If I select 01/07/2013 - 06/07/2013 I get 01, 02, 03, 04, 05.
I've tried using:
WHERE (NonPMJobs.npmJobCreateDate BETWEEN #Created_Parameter AND #Created_Parameter2)
but get same results.
What am I missing here and why isn't WHERE statement inclusive? Any pointers would be very much appreciated.
Well, you need to think about this: a DATETIME like this: 05/07/2013 means the 5th of July (or 7th of May - depending on your locale) at midnight when the day starts (a 00:00 hours, so to speak).
So this does NOT include the events that happen on that day!
The best solution would be to use
WHERE (NonPMJobs.npmJobCreateDate >= #Created_Parameter) AND
(NonPMJobs.npmJobCreateDate < DATEADD(DAY, 1, #Created_Parameter2))
and basically getting everything that's smaller than the next day based on #Created_Parameter2. So for your 5th of July, that would be anything before the 6th of July - which includes all events from the 5th of July.
I have a table which contains a value for every 30 minutes in a month, e.g.
20/03/2010 00:00 12
20/03/2010 00:30 14
etc
All of this data is stored in GMT
I need to do a select on this table for the data in bst/clock time
for example
select *
from tbl
where dt between '01 April 2010' and '30 April 2010 23:30'
when in BST as the date range above is the dates need to be converted
I also need a way of taking the changeover hour and the end of March and October into account
Unfortunatly I cannot upgrade SQL server
Is there any way that I can do this in SQL for SQL Server 2000?
something like a function I could do?
select *
from tbl
where fnConvertToClockTime(dt) between '01 April 2010' and '30 April 2010 23:30'
When in GMT the function would return the exact date from the table
Cheers
Rupert
I have the same problem and am investigating the use of Calendar tables for such convserions. Store all dates in UTC time then convert as necessary, I'm probably going to create VIEWS for the different time zones to avoid parameter passing but I guess a stored procedure would also work.
I found some useful information here: how-do-i-convert-local-time-to-utc-gmt-time
And an associated article on Calendar tables here: why-should-i-consider-using-an-auxiliary-calendar-table
This query is working fine:
SELECT * FROM tablename where Date >'20091109' and id='11';
But below this query does not return anything.
SELECT * FROM tablename
WHERE Date BETWEEN ('20091109' AND '20081010') AND id='11';
between ('20091109' and '20081010')
This is anything after 9th Nov 2008 and before 10th Oct 2008. Of course if show nothing.
Do you mean this which is 10 Oct 2008 to 8th Nov 2009 inclusive
Date >= '20081010' AND Date < '20091109'
or this which is 10 Oct 2008 to 9th Nov 2009 inclusive
Date >= '20081010' AND Date < '20091110'
Edit: Removed SQL Server references
SELECT * FROM
tablename
where Date between '20081010' and '20091109'
and id='11';