datediff

I am new to Spark SQL. We are migrating data from SQL server to Databricks. I am using SPARK SQL . Can you please suggest how to achieve below functionality in SPARK sql for the below datefunctions. I can see datediff gives only days in spark sql. DATEDIFF(YEAR,StartDate,EndDate) DATEDIFF(Month,StartDate,EndDate) DATEDIFF(Quarter,StartDate,EndDate) As you have mentioned SparkSQL does support DATEDIFF but for days only. I would also be careful as it seems the parameters are the opposite way round for Spark, ie --SQL Server DATEDIFF ( datepart , startdate , enddate ) --Spark DATEDIFF ( enddate ,

How do you get today's date, as a date object? I'm trying to compute the difference between some start date and today. The following will not work, because getdate() returns an array and not a date object: $today = getdate(); $start = date_create('06/20/2012'); $diff = date_diff($start, $today); echo($today . '<br/>' . $start . '<br/>' . $diff); Output: Array ( [seconds] => 8 [minutes] => 1 [hours] => 16 [mday] => 11 [wday] => 1 [mon] => 6 [year] => 2012 [yday] => 162 [weekday] => Monday [month] => June [0] => 1339455668 ) DateTime Object ( [date] => 2012-06-20 00:00:00 [timezone_type] => 3

Each row in my table has a date time stamp, and I wish to query the database from now, to count how many rows are in the last 30 days, the 30 days before that and so on. Until there is a 30 day bin going back to the start of the table. I have successfully carried out this query by using Python and making several queries. But I'm almost certain that it can be done in one single MySQL query. Phil Frost No stored procedures, temporary tables, only one query, and an efficient execution plan given an index on the date column: select subdate( '2012-12-31', floor(dateDiff('2012-12-31',

i got this problem and i don't know what to do... they have thesame format $date_expire = '2014-08-06 00:00:00'; $date1 = date("Y-m-d G:i:s"); $date2 = date_create($date_expire); $diff = date_diff($date1, $date2); //this line makes error.. Rikesh Because you are passing string whereas date_diff expects datetime object, $date_expire = '2014-08-06 00:00:00'; $date = new DateTime($date_expire); $now = new DateTime(); echo $date->diff($now)->format("%d days, %h hours and %i minuts"); DEMO . 来源： https://stackoverflow.com/questions/24608529/date-diff-expects-parameter-1-to-be-datetimeinterface

I am trying to output number of days between today and the date I enter so I have a problem I encounter error: "Warning: date_diff() expects parameter 2 to be DateTimeInterface" So what's the problem ? <?php $today=date("y-m-d"); $date=date_create("2016-09-16"); echo date_diff($date,$today); ?> Your problem lies in that when using date_diff you have to make sure that you're comparing objects that are actual date objects. Also the return type for date_diff is a DateInterval object. You're treating it as a string. $today = new DateTime(); // $today is a DateTime object $date = new DateTime("2016

I have table that holds records with tasks, status and time when triggered: Table tblwork: +-------------+------------+---------------------+-----+ | task | status | stime | id | +-------------+------------+---------------------+-----+ | A | 1 | 2018-03-07 20:00:00 | 1 | | A | 2 | 2018-03-07 20:30:00 | 2 | | A | 1 | 2018-03-07 21:00:00 | 3 | | A | 3 | 2018-03-07 21:30:00 | 4 | | B | 1 | 2018-03-07 22:30:00 | 5 | | B | 3 | 2018-03-07 23:30:00 | 6 | +-------------+------------+---------------------+-----+ Status 1 means start, 2 - pause, 3 - end Then I need to calculate how much time is spent