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Return every column and every row from the employees table.
SELECT * means “show me everything.” FROM employees means “from the employees table.” Together they return the full list of people.
employees (id, name, department, salary)
Add up the numbers in cells A1 through A5.
=SUM(A1:A5) tells Google Sheets to add every number from cell A1 down to A5. The = starts a formula. SUM is the function that adds. A1:A5 is the range of cells.
A1=10, A2=20, A3=30, A4=40, A5=50