I would like to create a new index column in power bi. The index column already refers to the tour level. The second index (e.g. Index.1) should refer to the time of the respective tour. So if index =1 and column date_stop_order = 09/16/2022 07:19 then index.1 =1, if index = 1 and column date_stop_order = 09/16/2022 07:34 then index.1 = 2... and so on.
If Index = 2 then Index.1 should start again from new 1.
Click select first and second columns. Right click group by and use operation all data. Add index. Expand data
Related
I am a new user of MatlabR2021b and I have a table where the last column (with name loadings) spans multiple sub-columns (all sub-columns were added under the same variable/column and are threated as one column). I wanto to create a For loop that goes through each separate loading column and iterates through them, prior to creating a tbl that I will input into a model. The sub-columns contain numbers with rows corresponding to the number of participants.
Previously, I had a similar analogy where the loop was iterating through the names of different regions of interest, whereas now the loop has to iterate through columns that have numbers in them. First, the numbers in the first sub-column, then in the second, and so on.
I am not sure whether I should split the last column with T1 = splitvars(T1, 'loadings') first or whether I am not indexing into the table correctly or performing the right transformations. I would appreciate any help.
roi.ic = T.loadings;
roinames = roi.ic(:,1);
roinames = [num2str(roinames)];
for iroi = 1:numel(roinames)
f_roiname = roinames{iroi};
tbl = T1;
tbl.(roinames) = T1.loadings(:,roiname);
**tbl.(roinames) = T1.loadings_rsfa(:,roiname)
Unable to use a value of type cell as an index.
Error in tabular/dotParenReference (line 120)
b = b(rowIndices,colIndices)**
I need to split the same record two time.
For example, if I have in MyTable five record I need to show in Form's Grid ten record.
If It's possible I can create a View, I just to duplicate one time the same record.
This is my start point :
I want to duplicate the record :
In MyForm can't edit anything, is only View. No Delete, No Edit, No Create
Thanks in advance!
This sounds like an exercise, which we probably shouldn't be giving you the answer to...but try creating MyTableJoin and create a foreign key relation to MyTable.Id then add a field called MyTableJoin.Row and populate the table with 2 matching rows for every 1 row in MyTable. Then on your form, join MyTableJoin.
So:
MyTableJoin.clear();
MyTableJoin.Id = "ID_I";
MyTableJoin.Row = 1;
MyTableJoin.insert();
MyTableJoin.clear();
MyTableJoin.Id = "ID_I";
MyTableJoin.Row = 2;
MyTableJoin.insert();
MyTableJoin.clear();
MyTableJoin.Id = "ID_II";
MyTableJoin.Row = 1;
MyTableJoin.insert();
MyTableJoin.clear();
MyTableJoin.Id = "ID_II";
MyTableJoin.Row = 2;
MyTableJoin.insert();
You can create a union view and add same table twice. Just be shore to select union all option so that you do not get unique results.
id datetime new_column datetime_rankx
1 12.01.2015 18:10:10 12.01.2015 18:10:10 1
2 03.12.2014 14:44:57 03.12.2014 14:44:57 1
2 21.11.2015 11:11:11 03.12.2014 14:44:57 2
3 01.01.2011 12:12:12 01.01.2011 12:12:12 1
3 02.02.2012 13:13:13 01.01.2011 12:12:12 2
3 03.03.2013 14:14:14 01.01.2011 12:12:12 3
I want to make new column, which will have minimum datetime value for each row in group by id.
How could I do it in Power BI desktop using DAX query?
Use this expression:
NewColumn =
CALCULATE(
MIN(
Table[datetime]),
FILTER(Table,Table[id]=EARLIER(Table[id])
)
)
In Power BI using a table with your data it will produce this:
UPDATE: Explanation and EARLIER function usage.
Basically, EARLIER function will give you access to values of different row context.
When you use CALCULATE function it creates a row context of the whole table, theoretically it iterates over every table row. The same happens when you use FILTER function it will iterate on the whole table and evaluate every row against the filter condition.
So far we have two row contexts, the row context created by CALCULATE and the row context created by FILTER. Note FILTER use the EARLIER to get access to the CALCULATE's row context. Having said that, in our case for every row in the outer (CALCULATE's row context) the FILTER returns a set of rows that correspond to the current id in the outer context.
If you have a programming background it could give you some sense. It is similar to a nested loop.
Hope this Python code points the main idea behind this:
outer_context = ['row1','row2','row3','row4']
inner_context = ['row1','row2','row3','row4']
for outer_row in outer_context:
for inner_row in inner_context:
if inner_row == outer_row: #this line is what the FILTER and EARLIER do
#Calculate the min datetime using the filtered rows
...
...
UPDATE 2: Adding a ranking column.
To get the desired rank you can use this expression:
RankColumn =
RANKX(
CALCULATETABLE(Table,ALLEXCEPT(Table,Table[id]))
,Table[datetime]
,Hoja1[datetime]
,1
)
This is the table with the rank column:
Let me know if this helps.
I executed a stored procedure in java which results into a table of 16 column and 3600 rows.Now I want to access 3 column of the retrieved table in row by row fashion and calculate the average of all column in row wise fashion.To do this,I need to access values of columns one by one .How to do it. My code for accessing column is
while (rs.next())
{
a1=rs.getDouble(7);
a2=rs.getDouble(8);
a3=rs.getDouble(10);
sum +=(a1+a2+a3);
}
return sum/3;
but through this,i think i'am getting a total average of all the columns .But i need average of column row by row i.e average of all three column of first row,then second row ...like this.
You are indeed adding all the values from 3 columns and doing row by row addition.
If you want row by row, then for each entry that you get from database you need to store the result in a list like below and return it where needed:
List<Double> averageList = new ArrayList<Double>();
while (rs.next())
{
a1=rs.getDouble(7);
a2=rs.getDouble(8);
a3=rs.getDouble(10);
averageList.add((a1+a2+a3)/3.0);
}
return averageList;
If I generate an identity for a table on the column cust-id, I want the next column userid to be cust-id+CID.
E.g. 000000001CID, 0000000002CID
What sql do I include for this?
Similarly if I have 00001 in the column Cust-id and abcd in the column section, the 3rd column must have value 00001abcd
Please let me know the solutions
You just need to create a trigger. Something like
CREATE TRIGGER A
BEFORE INSERT ON TABLE B
REFERENCING NEW AS N
FOR EACH ROW
BEGIN
SET N.userid = N.CUST_ID + N.CID ;
IF (N.CUST_ID = '00001' AND N.SECTION = 'abcd') THEN
SET N.THIRD = N.CUST_ID + N.SECTION
END IF;
END #
By the way, generating values in column shows that your module is not normalize, and sometimes this is a source of errors.