sum#

swordfish.function.sum()#

If X is a vector, return the sum of all the elements in X.

If X is a matrix, calculate the sum of each column of X and return a vector.

If X is a table, calculate the sum of each column of X and return a table.

As with all aggregate functions, null values are not included in the calculation.

If all elements of a calculation are null values, the result is NULL.