Select Where as a group

[#1]

Hello,

I am struggling with selecting several group of  rows with categorize by data in row :Folder. 

My objective is to clean up the data table with full group of "0" or empty cells 

For example, i have a data table as such; 

Well	Data	Folder
A1	0	20200107 011 3F
A2	0	20200107 011 3F
A3	0	20200107 011 3F
A4	0	20200107 011 3F
A5	0	20200107 011 3F
A6	0	20200107 011 3F
A7	0	20200107 011 3F
A8	0	20200107 011 3F
A9	0	20200107 011 3F
A10	0	20200107 011 3F
A11	0	20200107 011 3F
A12	0	20200107 011 3F
A1	7544.868393	20210104 002 1F
A2	7428.832161	20210104 002 1F
A3	0	20210104 002 1F
A4	8172.858217	20210104 002 1F
A5	7498.462766	20210104 002 1F
A6	8097.892056	20210104 002 1F
A7	8293.360203	20210104 002 1F
A8	7553.37215	20210104 002 1F
A9	7247.308905	20210104 002 1F
A10	7720.272697	20210104 002 1F
A11	7583.015099	20210104 002 1F
A12	8204.126781	20210104 002 1F
A1	9338.33795	20210104 007 1F
A2	9128.858265	20210104 007 1F
A3	9451.369309	20210104 007 1F
A4	9630.497262	20210104 007 1F
A5	10168.6979	20210104 007 1F
A6	10661.44516	20210104 007 1F
A7	9974.956184	20210104 007 1F
A8	9563.327404	20210104 007 1F
A9	9382.459181	20210104 007 1F
A10	9495.7588	20210104 007 1F
A11	9501.20388	20210104 007 1F
A12	10190.34965	20210104 007 1F
A1	9892.506179	20210104 008 1F
A2	8803.620355	20210104 008 1F
A3	9106.947088	20210104 008 1F
A4	9620.514722	20210104 008 1F
A5	10422.77538	20210104 008 1F
A6	9931.952661	20210104 008 1F
A7	10465.03549	20210104 008 1F
A8	10313.01828	20210104 008 1F
A9	9515.805162	20210104 008 1F
A10		20210104 008 1F
A11	9638.32667	20210104 008 1F
A12	9230.893171	20210104 008 1F

How do select and delete off a group of data rows by :Folder, while maintaining the "0" or empty cells that have some values for other :Well in the :Folder 

After the clean up, the data table should look like this:

Well	Data	Folder
A1	7544.868	20210104 002 1F
A2	7428.832	20210104 002 1F
A3	0	20210104 002 1F
A4	8172.858	20210104 002 1F
A5	7498.463	20210104 002 1F
A6	8097.892	20210104 002 1F
A7	8293.36	20210104 002 1F
A8	7553.372	20210104 002 1F
A9	7247.309	20210104 002 1F
A10	7720.273	20210104 002 1F
A11	7583.015	20210104 002 1F
A12	8204.127	20210104 002 1F
A1	9338.338	20210104 007 1F
A2	9128.858	20210104 007 1F
A3	9451.369	20210104 007 1F
A4	9630.497	20210104 007 1F
A5	10168.7	20210104 007 1F
A6	10661.45	20210104 007 1F
A7	9974.956	20210104 007 1F
A8	9563.327	20210104 007 1F
A9	9382.459	20210104 007 1F
A10	9495.759	20210104 007 1F
A11	9501.204	20210104 007 1F
A12	10190.35	20210104 007 1F
A1	9892.506	20210104 008 1F
A2	8803.62	20210104 008 1F
A3	9106.947	20210104 008 1F
A4	9620.515	20210104 008 1F
A5	10422.78	20210104 008 1F
A6	9931.953	20210104 008 1F
A7	10465.04	20210104 008 1F
A8	10313.02	20210104 008 1F
A9	9515.805	20210104 008 1F
A10		20210104 008 1F
A11	9638.327	20210104 008 1F
A12	9230.893	20210104 008 1F

Regards

Ashraff 

[#2]

Hello,

I think i manage to solve this.. in not very smart way, but it works.
I create an average data column and select the rows that he average == 0
then delete off the rows.

cctable << New Column( "DataAverage",Numeric,Continous,Format( "Best", 9 ),
Formula( Col Mean(:Data, :Folder)));

cctable << Row Selection(Select where( :DataAverage == 0));
cctable << delete rows();
cctable << delete column(column("DataAverage"));

This serve the purpose,
but if anybody have a more robust way of scripting this, do let me know.

Regards
Ashraff

[#3 · Accepted solution]

Your code can be simplified.  There isn't a need to create the new formula column.

names default to here(1);
cctable = current data table();

cctable << select where(col mean(:data,:folder)==0);
cctable << delete rows;

[#4]

Thanks Jim,

I knew that there is a more elegant way of structuring the code as you demonstrated. 

Thank You! 

Regards

Ashraff