timestamp

问题 I've got some sensory information going into a table. I have figured out the query that will tell me exactly when the value at a particular device changes. What I need to know is the status of all of the other sensors at that time. The trick is, the timestamps won't be equal. I could get a data point from sensor 1, then 3 minute later, one from sensor 2, and then 30 seconds later, another from sensor 1. So, here is an example of what I am talking about: --- data_table --- sensor | state |

问题 I am trying to read a text file into an Oracle database using the Data Import Wizard in SQL Developer. I am stuck on step 5 because I cannot get the Verify parameters before import to succeed on my timestamp fields. Going back to step 4, I have tried changing the Data type of my timestamp fields to Timestamp , Timestamp with time zone , and Timestamp with local time zone . In desperation, I even tried Date . Nothing worked. I then noticed the Format field that shows up when you select any of

问题 I've having an issue comparing two unix timestamps in php. $time_now = mktime(); if($auction->time_end > $time_now){ //true } else{ //false } $auction->time_end is 1362579127 and set as int from db. $time_now is for example 1364129253 and is set as int, both were checking with var_dump and are indeed returning both as ints. The problem is that PHP seems to think 1362579127 is greater than 1364129253 (returns false) which it is not.. am I missing something here? If I input the values into the

问题 I've having an issue comparing two unix timestamps in php. $time_now = mktime(); if($auction->time_end > $time_now){ //true } else{ //false } $auction->time_end is 1362579127 and set as int from db. $time_now is for example 1364129253 and is set as int, both were checking with var_dump and are indeed returning both as ints. The problem is that PHP seems to think 1362579127 is greater than 1364129253 (returns false) which it is not.. am I missing something here? If I input the values into the

问题 What is the most efficient way to convert list itmes like 02/Oct/2013:20:18:18 to timestamp, using Python? I need to convert HUGE log files in which lines are going to be processed based on their timestamps. so need a really fast transformation method. 回答1: strptime is the way to go. It will accept arbitrary time formats and convert it into a struct_time type object. Additionally, you can use time.mktime() to get the unix-timestamp from the struct_time object. EDIT: (Adding example) Taking

问题 I'm looking for some help for an app my team and I are working on. We are facing the following problem for weeks : flutter type 'Timestamp' is not a subtype of type 'DateTime' We want to get these user data from Cloud Firestore : birth [DateTime] gender [String] license [DateTime] name [String] size [String] weight [String] Only birth and license are stored as [Timestamp] in Cloud Firestore so we parse these data to [DateTime]. Here's our code to get user's data : import 'package:cloud

问题 This question already has answers here : Calculating the difference between two Java date instances (45 answers) Closed 4 years ago . Im trying to calculate the time difference between 2 Timestamps, this is the code: Calendar calendar = Calendar.getInstance(); java.util.Date now = calendar.getTime(); Timestamp currentTimestamp = new Timestamp(now.getTime()); System.out.println("Current\n"+currentTimestamp); DateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy"); Date date = dateFormat

问题 I'm building a simple sell&buy-site and want to list the latest ads on the first pages. In my database I have 4 tables. USERS , CARS , ELECTRONICS and COMPUTERS . Each of the three tables of items ( CARS , ELECTRONICS and COMPUTERS ) have DATESTAMP in them, but I can't manage to easily sort them after this DATESTAMP using MySQL and PHP. They all contain different columns but have DATESTAMP and SSN (identifying the user how owns the ad) in common. EDIT: I've tried Joining the tables, sorting

问题 I'm building a simple sell&buy-site and want to list the latest ads on the first pages. In my database I have 4 tables. USERS , CARS , ELECTRONICS and COMPUTERS . Each of the three tables of items ( CARS , ELECTRONICS and COMPUTERS ) have DATESTAMP in them, but I can't manage to easily sort them after this DATESTAMP using MySQL and PHP. They all contain different columns but have DATESTAMP and SSN (identifying the user how owns the ad) in common. EDIT: I've tried Joining the tables, sorting

问题 I'm building a simple sell&buy-site and want to list the latest ads on the first pages. In my database I have 4 tables. USERS , CARS , ELECTRONICS and COMPUTERS . Each of the three tables of items ( CARS , ELECTRONICS and COMPUTERS ) have DATESTAMP in them, but I can't manage to easily sort them after this DATESTAMP using MySQL and PHP. They all contain different columns but have DATESTAMP and SSN (identifying the user how owns the ad) in common. EDIT: I've tried Joining the tables, sorting