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How to get the one of the column value based on summation of first column values


How to get the one of the column value based on summation of first column values

By : Abhishek Gupta
Date : November 22 2020, 11:12 AM
I think the issue was by ths following , Able to do this using Element Binding and using Converter. So my XAML now looks like:
code :
<DataGrid AutoGenerateColumns="False"
                  Name="dataGrid1"
                  ItemsSource="{Binding Customers}" Grid.Row="1"
                 Grid.ColumnSpan="2" HorizontalAlignment="Stretch">
            <DataGrid.Columns>
                <DataGridTextColumn Header="Id" Binding="{Binding ID}"/>
                <DataGridTextColumn Header="Value" Binding="{Binding Value}"/>
                <DataGridTextColumn Header="DynamicValue" Binding="{Binding ElementName=dataGrid1,Converter={StaticResource columnConverter}}"></DataGridTextColumn>
            </DataGrid.Columns>
        </DataGrid>
 class FirstColumnConverter:IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            DataGrid dg = value as DataGrid;
            var totalItems = dg.Items.Count;
            int summedValue = 0;

            for (int i = 0; i < totalItems-1; i++)
            {
                    var currentItem = (Customer) dg.Items.GetItemAt(i);
                    summedValue += currentItem.ID;
            }

            return summedValue;   
        }
    }


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display column that is summation of other column values where intermediate values come from inner selects

display column that is summation of other column values where intermediate values come from inner selects


By : user3104317
Date : March 29 2020, 07:55 AM
like below fixes the issue I have the following query. 2 columns are results of inner selects (select1 and select2). How to display additional column (select1+select2) that contains summation of the values in the 2 columns coming from the inner selects? , Just use a CTE or subquery:
code :
with cte as (
      SELECT DISTINCT tableC.something, tableD.something,
             (SELECT COUNT(id) FROM tableA) AS select1,
             (SELECT SUM(number) FROM tableB) AS select2,

      FROM tableC JOIN
           tableD
           ON tableD.p_id=tableC.id
      WHERE tableC.something1 = 1 AND tableD.something = 1
     )
select cte.*, select1 + select2
from cte;
      SELECT DISTINCT tableC.something, tableD.something,
             a.select1, b.select2, a.select1 + b.select2
      FROM tableC JOIN
           tableD
           ON tableD.p_id = tableC.id CROSS JOIN
           (SELECT COUNT(id) as select1 FROM tableA) a CROSS JOIN
           (SELECT SUM(number) as select2 FROM tableB) b 
      WHERE tableC.something1 = 1 AND tableD.something = 1
How to add a new column based on summation of other columns

How to add a new column based on summation of other columns


By : Elias Sadqi
Date : March 29 2020, 07:55 AM
this one helps. Try rowSums(flight, na.rm=T),
or rowSums(cbind(flights$Total.Fatal.Injuries, flights$Total.Minor.Injuries, flights$Total.Serious.Injuries),na.rm=T)
MySQL update a column's values to equal the sum of another column's values based on date and another column's value

MySQL update a column's values to equal the sum of another column's values based on date and another column's value


By : user1961602
Date : March 29 2020, 07:55 AM
I wish this helpful for you You need SUM() aggregation with Group By on team and game_date:
code :
SELECT 
  team, 
  game_date, 
  SUM(minutes) AS team_minutes_played 
FROM 
  your_table_name 
GROUP BY 
  team, 
  game_date 
Create column based on another column value, based on assigning value to sets of string values from the input column

Create column based on another column value, based on assigning value to sets of string values from the input column


By : user2394379
Date : March 29 2020, 07:55 AM
help you fix your problem Use map:
code :
lookup = {'F-On' : 'On', 'S-On' : 'On', 'circ':'fooON', 'TH':'fooON', 'circInS':'fooON', 'R':'R', 'S':'S'}
df['grouped_status'] = df.status.map(lookup)
            datetime  dty       dtx   status grouped_status
2018-09-16  04:38:17  0.0  0.099854     F-On             On
2018-09-16  04:38:18  0.0  0.100098     F-On             On
2018-09-16  04:38:19  0.0  0.000000     S-On             On
2018-09-16  04:38:20  0.0  0.100098     F-On             On
2018-09-16  04:38:21  0.0  0.100098     circ          fooON
2018-09-16  04:38:22  0.0  0.100098  circInS          fooON
2018-09-16  04:38:21  0.0  0.100098       TH          fooON
2018-09-16  04:38:21  0.0  0.100098        R              R
2018-09-16  04:38:21  0.0  0.100098        S              S
separate fields based on first column content, match in second column and subtract in fourth column values in awk

separate fields based on first column content, match in second column and subtract in fourth column values in awk


By : user3666801
Date : March 29 2020, 07:55 AM
it helps some times My input file is like: , Could you please try following.
code :
awk '
!/^control/{
  a[++count1]=$NF
  b[count1]=$1 OFS $2 OFS $3
  next
}
{
  c[++count2]=$NF
}
END{
  for(i=1;i<=count1;i++){
    print b[i],a[i]-c[i]
  }
}
'   Input_file
awk '
!/^control/{
  a[++count1]=$NF
  $NF=""
  sub(/ +$/,"")
  b[count1]=$0
  next
}
{
  c[++count2]=$NF
}
END{
  for(i=1;i<=count1;i++){
    print b[i],a[i]-c[i]
  }
}
' Input_file
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