=COUNTA(value1, [value2], ...)
=COUNTA(B5:B15)
returns 9 if there are 9 cells with data in the range B5:B15.
=COUNTA(1,2,3)
returns 3 because there are 3 values as arguments.
=COUNTA(1,"a","b")
returns 3 because there are 3 values as arguments.
=COUNTA(1,2,3,"a",5%)
returns 5 because there are 5 values as arguments.
=COUNTA(A1:A10)
returns the count of non-empty cells in the range A1:A10.
=COUNTA(A1:A10,C1:H2)
returns the count of non-empty cells in two ranges.
The COUNTA function is a built-in function in Sourcetable that is used to count the number of cells that contain data.