Initialize variable to 0 before looping. Use += operator to add current number to total. Range() class creates numbers within specified range
SUM() is an SQL aggregate function that computes total values. GROUP BY partitions rows into groups and computes aggregate functions. NULL values are ignored in SUM() calculations
Insert a blank column or row after your data. Select the data range you want to sum. Press Alt + = (Windows) or Shift + Command + T (Mac). Results appear in the blank column or row
SUM function requires formula input with numbers and cell references. Function syntax: =SUM(number1,[number2],[number3],[number4]...). Functions can be used with ranges, cell references, numbers, or named ranges
SUM function calculates total values in numeric columns or expressions. Basic syntax: SELECT SUM(column_name) FROM table_name. Function ignores NULL values
SUM() calculates total values in a set. Returns NULL if no rows are returned. Ignores NULL values in calculations. DISTINCT option calculates unique values