Computes the rolling sum of values forward or backward of the current row within the specified column.

Column example:

rollingsum(myCol)

Output: Returns the rolling sum of all values in the myCol column.

Rows before example:

rollingsum(myNumber, 3)

Output: Returns the rolling sum of the current row and the three previous row values in the myNumber column.

Rows before and after example:

rollingsum(myNumber, 3, 2)

Output: Returns the rolling sum of the three previous row values, the current row value, and the two rows after the current one in the myNumber column.     

rollingsum(col_ref, rowsBefore_integer, rowsAfter_integer) order: order_col [group: group_col]


ArgumentRequired?Data TypeDescription
col_refYstringName of column whose values are applied to the function
rowsBefore_integerNintegerNumber of rows before the current one to include in the computation.
rowsAfter_integerNintegerNumber of rows after the current one to include in the computation

For more information on the order and group parameters, see Window Transform.

col_ref

Name of the column whose values are used to compute the rolling sum. 

Required?Data TypeExample Value
YesString (column reference to Integer or Decimal values)myColumn

rowsBefore_integer, rowsAfter_integer

Integers representing the number of rows before or after the current one from which to compute the rolling sum, including the current row. For example, if the first value is 5, the current row and the five rows before it are used in the computation. Negative values for k compute the rolling average from rows preceding the current one.

Required?Data TypeExample Value
NoInteger4

Example - Rolling window functions