Greeting.
I have One datetime in my table. Its name is start_time. And I have a variable(process_time) that contains the number of seconds to run a process. How to count the number of fields with the following condition:
start_time + process_timen < Present time
You can utilize DB::raw() helper and add the SQL equivelant of what you want to achieve using DATE_ADD and INTERVAL.
$processTime = 15; // seconds
Model::where(DB::raw("DATE_ADD(start_time, INTERVAL $processTime second)"), '<', now())->count();
Related
I am Trying to subtract 1 minute from duration column through update query but it is not working. Duration field is of type time.
I try to use minus sign with new value but it is not working.
public function index()
{
$current = Carbon::now('Asia/Karachi');
Sale::where('date','=',$current->toDateString())
->where('time','<=',$current->toTimeString())
->update(['duration' => '- 00:01:00']);
}
I want to subtract one minute with help of this query.
Can you use DATE_SUB?
Something like
$object->update(['duration' => DB::raw('DATE_SUB(duration, INTERVAL 1 MINUTE)')])
I don't have a laravel instance in front of my, but that's how I'd write the SQL query and I think that's right based off my laravel memory.
I have some data I collect regarding length of time that's stored in HH:MM format. The data is in relation to sleep patterns (i.e. sleep duration, time fell asleep, etc...).
I am trying to import the data in Google Data Studio (DS) as a numeric variable, but it appears as text. I can see in DS there is a duration (seconds) numeric format, how can I convert a text variable into a numeric one?
It would be easier to convert the fields in a Google Sheet, but I need them as HH:MM for other calculations.
Try this:
0) Create a new Calculated Field
1) Seconds
Use a formula to convert the Time values to a single value in Seconds, where HH:MM:SS represents the field name:
( CAST(REGEXP_EXTRACT(HH:MM:SS, "^(\\d{2})") AS NUMBER ) * 60 * 60 ) + ( CAST(REGEXP_EXTRACT(HH:MM:SS, ":(\\d{2}):") AS NUMBER ) * 60 ) + CAST(REGEXP_EXTRACT(HH:MM:SS, "(\\d{2})$") AS NUMBER )
2) Change Field Type
- Numeric > Duration (sec.)
Credit to Google support community
You can use the TODATE or MINUTE and SECOND function into a calculated field to extract minutes and second from a date. However don't expect to display minutes and second datapoint on a line chart in Data Studio, timeserie charts only support hour-level data at a minimum.
I have 3 columns which contains start_time , end_time and tags. Times are represented in epoch time format as shown in example below. I want to find the the rows which have 1 hour time difference between them.
Example:
Start_time End_Time Tags
1235000081 1235000501 "Answered"
1235000081 1235000551 "Answered"
I need to fetch the tags column if the time diff is less than an hour.
I want do it in PIG - can anyone kindly help?
input.txt
1235000081 1235000501 Answered
1235000081 1235000551 Answered
pig script
A = Load '/home/kishore/input.txt' as (col1:long, col2:long, col3:chararray);
B = Foreach A generate ToDate(col1) as startdate,ToDate(col2) as enddate,col3;
C = Filter B by GetHour(enddate)-GetHour(startdate) == 1;
Dump C;
you can filter the row based on your condition like >,< ,==
In case if you want to keep date fields as timestamps the solution is following:
data = LOAD '/path/to/your/input' as (Start_Time:long, End_Time:long, Tags:chararray);
data_proc = FOREACH data GENERATE *, ToDate(Start_Time*1000) as Start_Time,ToDate(End_Time*1000) as End_Time;
output = FILTER data_proc BY GetHour(End_Time)-GetHour(Start_Time) == 1;
Dump #;
The one crucial thing is that Pig ToDate UDF needs a timestamp up to milliseconds precision thus you will have simply multiply your date fields by 1000 before using this UDF.
I have column which stores only time. I want to convert to it into datetime and then to a specific timezone. When I do it on console using only the attribute, it shows correct conversion value. But when I use it in query the query shows the current time in UTC. Suppose I have time "05:15" stored in Central time. Now when I want to fetch records for a interval of 30 minutes plus and minus of this time, I do following,
day = Time.now
# departure_time_from _db below is the name of column in table which store time
departure = departure_time_from _db.change(:day => date.day, :month => date.month, :year => date.year)
departure = departure.in_time_zone("Central Time (US & Canada)")
When I execute above code on console and see the value, it shows correct converted value. But when I use this variable in below query, current time gets used instead of the departure time.
Model.where("column_name > ? and "column_name < ?, departure - 30.minutes, departure + 30.minutes)
The time used in above query should be the time I want i.e Central time zone, but in query output, it shows UTC being used.
Please let me know what i am missing.
It shouldn't matter what time zone the query uses in the where clause as long as it's the same time representation. The time you're seeing in your query output from Rails is most likely the UTC equivalent of the ruby DateTime object being passed to the where statement. So if departure is 12:00 noon (UTC -6) in your Ruby code then the time shown in the SQL query will be 18:00, which corresponds to noon CST.
I have a table with many anniversaries : Date + Name.
I want to display the next anniversary and the one after with Linq.
How can i build the query ?
I use EF
Thanks
John
Just order by date and then use the .Take(n) functionality
Example with a list of some objects assuming you want to order by Date then Name:
List<Anniversaries> annivDates = GetAnnivDates();
List<Anniversaries> recentAnniv = annivDates.OrderBy(d => d.Date).ThenBy(d => d.Name).Take(2).ToList();
If the anniversaries are stored in regular DateTime structs, they may have the 'wrong' year set (i.e. wedding or birth year). I suggest writing a function which calculates the next date for an anniversary (based on the current day) like:
static DateTime CalcNext(DateTime anniversary) {
DateTime newDate = new DateTime(DateTime.Now.Year, anniversary.Month, anniversary.Day);
if (newDate < DateTime.Now.Date)
newDate = newDate.AddYear(1);
return newDate;
}
Then you proceed with sorting the dates and taking the first two values like described in the other postings:
(from e in anniversaries orderby CalcNext(e.Date) select e).Take(2)