timestamp

问题 I have timestamps looking like this: 2015-03-21T11:08:14.859831 2015-03-21T11:07:22.956087 I read a Wiki article on ISO 8601, but did not get the meaning of the last 6 digits here. I tried getting it down to milliseconds using "yyyy-MM-dd'T'HH:mm:ss.sss" or "yyyy-MM-dd'T'HH:mm:ss.ssssss" . Is it just more precise than milliseconds - up to microseconds? 回答1: Is it just more precise than milliseconds? Yes, it's microseconds in this case. ISO-8601 doesn't actually specify a maximum precision. It

问题 I have in my table a timestamps with created_at and updated_at $table->timestamps(); But I want to add another column that calculates the difference between created_at and updated_at in days Should I do that in SQL or in my controller? 回答1: You can do that from within your Eloquent model. Let's assume your model has the name User . You can create a computed field by defining an Accessor. class User extends Model { $dates = [ 'updated_at', 'created_at' ]; $appends = ['diffInDays']; public

问题 I have in my table a timestamps with created_at and updated_at $table->timestamps(); But I want to add another column that calculates the difference between created_at and updated_at in days Should I do that in SQL or in my controller? 回答1: You can do that from within your Eloquent model. Let's assume your model has the name User . You can create a computed field by defining an Accessor. class User extends Model { $dates = [ 'updated_at', 'created_at' ]; $appends = ['diffInDays']; public

问题 I have in my table a timestamps with created_at and updated_at $table->timestamps(); But I want to add another column that calculates the difference between created_at and updated_at in days Should I do that in SQL or in my controller? 回答1: You can do that from within your Eloquent model. Let's assume your model has the name User . You can create a computed field by defining an Accessor. class User extends Model { $dates = [ 'updated_at', 'created_at' ]; $appends = ['diffInDays']; public

问题 Im reading some data(messages) from Cloud Firestore and in a document i have a timestamp field for time. I have a Stream: Stream<QuerySnapshot> get chats { return chatCollection.document(roomid).collection("messages").snapshots(); } for getting the messages if a an update occurs in my database (ex New message). So when i start the app it reads all the data(messages) from the DB and i print them in my app. Here is what my console printing the messages every time i get a new snapshot: D

问题 I'm trying to get the unix time from a timestamp field in milliseconds (13 digits) but currently it returns in seconds (10 digits). scala> var df = Seq("2017-01-18 11:00:00.000", "2017-01-18 11:00:00.123", "2017-01-18 11:00:00.882", "2017-01-18 11:00:02.432").toDF() df: org.apache.spark.sql.DataFrame = [value: string] scala> df = df.selectExpr("value timeString", "cast(value as timestamp) time") df: org.apache.spark.sql.DataFrame = [timeString: string, time: timestamp] scala> df = df

问题 Assume a given variable, it is containing a UNIX time-stamp, but whether it is in seconds or milliseconds format is unknown, I want to assign to a variable which is in seconds format For Example: unknown = 1398494489444 # This is millisecond t = ??? Updated: I understand it is not possible to tell without giving some limitations, so here is it current_ts - 86400 * 365 < unknown < current_ts Assume current_ts = current unix timestamp 回答1: If you convert the maximum timestamp values with x

问题 Assume a given variable, it is containing a UNIX time-stamp, but whether it is in seconds or milliseconds format is unknown, I want to assign to a variable which is in seconds format For Example: unknown = 1398494489444 # This is millisecond t = ??? Updated: I understand it is not possible to tell without giving some limitations, so here is it current_ts - 86400 * 365 < unknown < current_ts Assume current_ts = current unix timestamp 回答1: If you convert the maximum timestamp values with x

问题 this is a start: > > XQUERY fn:parse-ietf-date('Tue, 18 Jun 2019 13:10:56 GMT') 2019-06-18T13:10:56Z Query executed in 425.5 ms. > from the basex console. need to apply to the query for a searchable date. see also: Inverse function to format-date Google chat, or "hangouts" exports its data as JSON. The dates are in UTC as a String, looking at least similar to: Thursday, 17-Dec-20 14:29:33 UTC in RFC 2822 https://www.unixtimestamp.com/ Assuming RFC 2822, or similar, then how would that String

问题 Please tell me how to set the date (current date minus one day) and time equal to 19:00:00 using such a construction? new java.sql.Timestamp(java.util.Calendar.getInstance.getTime().getTime()) LocalDateTime don't use. 回答1: I recommend you do it using the java.time (the modern date-time API). Solution, purely using the modern API: import java.time.LocalTime; import java.time.OffsetDateTime; import java.time.ZoneId; import java.time.ZonedDateTime; public class Main { public static void main