I have to query my table for datetime interval. Suppose I have following 4 rows:
id typeId start end
1 11 18.09.2014 18.09.2014 23:45:00
2 11 19.09.2014 19.09.2014 23:45:00
3 12 18.09.2014 18.09.2014 23:45:00
4 12 19.09.2014 19.09.2014 23:45:00
Linq query is following:
model.Entities.Where(t => t.StartTime >= start && t.EndTime <= end);
which becomes something like that:
//some omitted sql select from
where a.[StartTime] >= strftime('%Y-%m-%d %H:%M:%f', #p2)
AND
a.[EndTime] <= strftime('%Y-%m-%d %H:%M:%f', #p3)
p2 = '2014-09-18' and p3 =2014-09-19 23:45:00.000
As a result I get 2 rows instead of 4 rows. I've investigated the problem and saw that if format string had %S instead of %f then everything works great. I don't know whether it is a bug or an expected behavior, but I would like to get correct results.
I guess that System.Data.Sqlite provider is responsible for generating sql code, but reading source code of this provider ( SqlGenerator.cs and SQLite3.cs) I didn't find anything that looks strange.
The question is: can I influence some how on the sql code generation, can I provide a hint to use '%Y-%m-%d %H:%M:%S' format string instead of '%Y-%m-%d %H:%M:%f' for strftime function?
I found my answer here, it is possible to supply additional sql statements plus correct usage(for both operands) of strftime function.
Related
I can't seem to figure out how to combine the result of 2 Business Objects queries.
Both queries return a set of codes and a number of hours. Query 1 can have codes that do not appear in Query 2, and Query 2 can have codes that do not appear in Query 1.
The resulting report should contain all codes from both Query 1 and Query2, a column with the sum of hours from Q1 for that code, and a column with the sum of hours from Query 2 for that code. If one of the queries doesn't have a code in it, it would return a blank or 0 total.
Example:
Q1 results:
|Code|Value|
|:---|:----|
|A|15|
|A|17|
|B|12|
|D|22|
|D|35|
|E|16|
|E|9|
|E|11|
Q2 results:
|Code|Value|
|:---|:----|
|A|5|
|A|19|
|B|33|
|C|17|
|C|24|
|E|78|
|E|12|
Report:
|Code|Value1|Value2|
|----|------|------|
|A|32|24|
|B|12|33|
|C| |41|
|D|57| |
|E|36|90|
|Total|137|188|
When I create the Business Object report table as normal, only the values of Query 1 are used, and I miss the row for value C. If I flip the queries around, I miss the row for value D.
How do I set up my report to show all the code values?
Edit: Sorry for the formatting of the tables, in the preview it looks perfect. :(
Need help with the correct syntax. I need to determine based on 3 columns (Year, Years of Service, Terminate) if the years of service fall between the following criteria or the Terminate column has a date.
IF(["#YearsofService"]=>2,"2+ Years" else "Less than 2 Years") else Terminate(has a date) is not null. This will be for an new column displaying the criteria text.
also tried Switch function.
=SWITCH(TRUE()
[#"#YearsofService"] >=2,"2 + Years" & [#"#YearsofService"] <2, "Less Than 2 Years",
isblank([Term Date]), "Termed"
)
also tried:
IF(ISBLANK([Term Date])=false, "Termed",IF([#"#YearsofService"] >=2,"2 + Years","Less Than 2 Years"))
but does not like the If portion of statement
I think SWITCH TRUE would be the best solution for this sort of multi-test requirement. The sequence of tests after the TRUE is critical - DAX will stop evaluating after the first TRUE result is struck. So here's my attempt:
=SWITCH(TRUE()
, NOT(ISBLANK([Term Date])), "Termed"
, [#YearsofService] >=2,"2 + Years"
, [#YearsofService] <2, "Less Than 2 Years"
)
In your example you are only using two of the mentioned columns (Years of Service and Terminate). I guess the statement should look like this:
Result = IF(ISBLANK([Term Date]);IF([#"#YearsofService"]<2;"Less than 2 years";"More than 2 years");"Termed")
I'm trying to figure out a DateAdd() equivalent in Oracle that is actually the difference in seconds between 2 columns in the same table:
SELECT
DISTINCT p.packet_id,
p.launch_dt,
r.route_duration,
s.completion_date,
DATEADD(SS, r.route_duration, p.launch_dt) AS tempDate
FROM
tdc_arc_apprpkt_def p
JOIN tdc_arc_inpr_route_def r
ON p.packet_id = r.packet_id
JOIN tdc_arc_inpr_route_step_detai s
ON p.packet_id = s.packet_id
AND s.completion_date > DATEADD(SS, r.route_duration, p.launch_dt)
Any help would be greatly appreciated!
In addition to being able to do date arithmetic using fractions of days as Tony demonstrates, assuming you are using 9i or later, you can also use interval functions (or, even better, define the ROUTE_DURATION column as an interval) and add intervals to dates. In your case, you can do
p.launch_dt + numtodsinterval( r.route_duration, 'SECOND' )
to add route_duration seconds to launch_dt.
If you were to define the route_duration column as an INTERVAL DAY TO SECOND rather than a NUMBER, you could simply add it to a date
p.launch_dt + r.route_duration
If I understand you correctly, you want to add r.route_duration seconds to p.launch_dt? In that case the expression is:
p.launch_dt + (r.route_duration/24/60/60)
Oracle DATE arithmetic works in days, so the divisions by 24, 60 and 60 convert the route_duration value from seconds to days.
I have a table in Mongo. One of the fields is a DateTime. I would like to be able to get all of the records that are only for a single day (i.e. 9/3/2011).
If I do something like this:
var list = (from c in col
where c.PublishDate == DateTime.Now
select c).ToList();
Then it doesn't work because it is using the time in the comparison. Normally I would just compare the ToShortDateString() but NoRM does not allow me to use this.
Thoughts?
David
The best way to handle this is normally to calculate the start datetime and end datetime for the date in question and then query for values in that range.
var start = DateTime.Now.Date;
var end = start.AddDays(1);
...
But you'd also be well advised to switch to the official C# driver now. You should also use UTC datetimes in your database (but that gets more complicated).
I am ran into the following issue.
Take a look at the following where clause.
Where(x => x.CreateTS <= dateParameters.CreationDate.ToDateValue &&
x.CreateTS >= dateParameters.CreationDate.FromDateValue)
CreateTS is a Timestamp column in the table. so when my dateparameters are todate = 01/28/2010 12:00A.M" fromdate= "01/26/2010 12.00A.M" (c# DateTime types) my query doesnot retrivies the table records whose CreateTS look like 01/28/2010 1:45A.M and above just differeing in the timestamps.
I just wanted to do comparison and dont want to compare the timestamps. any help would be appreciated.
Just look at the .Date portion of the DateTime:
Where(x => x.CreateTS.Date <= dateParameters.CreationDate.ToDateValue && x.CreateTS.Date >= dateParameters.CreationDate.FromDateValue)
As a side note:
Personally, I would put from first, since it's a bit easier to follow from a readability standpoint:
Where(x => x.CreateTS.Date >= dateParameters.CreationDate.FromDateValue && x.CreateTS.Date <= dateParameters.CreationDate.ToDateValue)
(I find it easier to think of being between two values as being >low and
Edit: You didn't specify that you were using the EF LINQ providers, which do not allow you to do Date. You can, I believe, handle this by looking forward one day, and using < instead of <= for your "to" comparison:
Where(x => x.CreateTS >= dateParameters.CreationDate.FromDateValue && x.CreateTS.Date < dateParameters.CreationDate.AddDays(1).ToDateValue)
#SARAVAN, AFAIK timestamp columns cannot be used in comparisons like that. A timestamp columns are mapped as byte[] (byte array) in EF. If comparisons like that are needed, I suggest to change the timestamp column in database to a datetime one.
only to quote from MSDN:
The SQL Server timestamp data type has nothing to do with times or dates. SQL Server timestamps are binary numbers that indicate the relative sequence in which data modifications took place in a database.
Interesting moment here is that
01/28/2010 12:00A.M actually in 24 hour format is 00:00 while 01/28/2010 1:45A.M is 01:45 and that seems to be the reason why those records are not returned. The midday will be 01/28/2010 12:00P.M