I feel, I could not understand your question.
I am not sure this syntax is correct, better to check it.
i=Browser().Page().WebTable().RowCount()

For x=1 to i
myData = Browser.page.WebTable().GetCellData(x,2)
'Assume, 2 is the number of Name Column.
allData=myData
'Use different Logic
Next
You can get all the data in those 3 columns.

The last part in your question is not understandable for me.

allData should be declared Globally, outside of any 
Loop/Condition.

allData=myData
I am sorry, correction for the above line.
allData=allData & vbcrlf & allData

I would like to know people feed back, about this posting.

Let us assume that application is VB application
You can copy and paste in ur PC then analyze u will
understand easily

E.g: 

RC=datatable.GetRowCount
msgbox RC

For i= 1 to RC

vbwindow("Form1").vbedit("name").Set DataTable("Name",
dtGlobalSheet) 
vbwindow("Form1").vbedit("marks").Set
DataTable("Marks",dtGlobalSheet)
vbwindow("Form1").vbbutton("OK").Click

' Here it will retrieve grade and displays in msgbox 
	grade=vbwindow("Form1").vbedit("Grade").GetROProperty("text")
msgbox grade

' It places Grade in Run Time Data Table 
VbWindow("Form1").VbEdit("Grade").Output CheckPoint("Grade")

' Now we can export that data in to our desired location
Next