max

问题 I have a csv file with more than 100 columns and 3500 rows which looks like this (just an example): import pandas as pd data = pd.DataFrame(data={ 'Profit': [90, -70, 111, 40, -5, -1], 'Crit1': [True, True, False, True, False, True], 'Crit2': [False, False, False, True, True, False], 'Crit3': [True, True, False, True, True, True], 'Crit4': [False, True, True, False, False, False], 'Crit5': [True, False, False, True, True, True] }) I'd like to define 3 results: 1 - totalProfit: is the sum of

问题 Here is the code snippet that I am working on and my goal is to find the largest value from the list using predefined java methods. import java.util.*; public class Test { public static void main(String[] args) { Scanner s = new Scanner(System.in); System.out.println("Enter a list of integers: "); int array[] = new int[10]; for (int i = 0; i < array.length; i++) { array[i] = s.nextInt(); } for (int j = 0; j < array.length; j++) { if (j < array.length) { int maximum = Math.max(array[j], array

问题 I have a Django class as follows: class MyModel(models.Model): my_int = models.IntegerField(null=True, blank=True,) created_ts = models.DateTimeField(default=datetime.utcnow, editable=False) When I run the following queryset, I get an error: >>> from django.db.models import Max, F, Func >>> MyModel.objects.all().aggregate(Max(Func(F('created_ts'), function='UNIX_TIMESTAMP'))) Traceback (most recent call last): File "<console>", line 1, in <module> File "MyVirtualEnv/lib/python2.7/site

问题 I have the following table... MemberID ServDate 001 12-12-2015 001 12-13-2015 001 12-15-2015 002 11-30-2015 002 12-04-2015 And I want to make it look like this... MemberID ServDate LastServDate 001 12-12-2015 12-15-2015 001 12-13-2015 12-15-2015 001 12-15-2015 12-15-2015 002 11-30-2015 12-04-2015 002 12-04-2015 12-04-2015 Is there a way I can do this without having to use a GROUP BY or nested query? (I'm dealing with a very large database and the GROUP BY slows things down considerably) 回答1:

问题 I have two table account and balance /---------------------\ | cid | name | mobile | |---------------------| | 1 | ABC | 12345 | |---------------------| | 2 | XYZ | 98475 | \---------------------/ /----------------------------\ | date | cid | balance | |----------------------------| | 2013-09-19 | 1 | 5000 | |----------------------------| | 2013-09-19 | 2 | 7000 | |----------------------------| | 2013-09-20 | 1 | 300 | |----------------------------| | 2013-09-20 | 2 | 4500 | |----------------

问题 I want to use min & max function but on certain criteria. Create Table #Test (Id Int Identity(1,1), Category Varchar(100), DateTimeStamp DateTime) Insert into #Test (Category,DateTimeStamp) values ('c1','2019-08-13 01:00:13.503') Insert into #Test (Category,DateTimeStamp) values ('c1','2019-08-13 02:00:13.503') Insert into #Test (Category,DateTimeStamp) values ('c1','2019-08-13 03:00:13.503') Insert into #Test (Category,DateTimeStamp) values ('c1','2019-08-13 04:00:13.503') Insert into #Test

来源： https://stackoverflow.com/questions/56194189/is-omn-the-same-as-omaxm-n

来源： https://stackoverflow.com/questions/56194189/is-omn-the-same-as-omaxm-n

来源： https://stackoverflow.com/questions/31870204/get-max-record-in-t-sql

来源： https://stackoverflow.com/questions/28351294/postgres-finding-max-value-in-an-int-array