How many rows does the following query produce in the report: select * from sq.employee_donations, sq.employees?

The query provided involves a Cartesian product, which occurs when two tables are joined without a specified JOIN condition. In this case, table sq.employee_donations and table sq.employees are involved.

To determine the number of rows produced by this query, one must multiply the number of rows in each table. If sq.employee_donations has, for example, 5 rows and sq.employees has 4 rows, the result of the Cartesian product will be (5 \times 4 = 20) rows.

Since no condition is applied to limit or join these two tables meaningfully, every row in the employee_donations table will combine with every row in the employees table, leading to a total of 20 generated rows when the counts of staff in both tables support this result. Thus, the outcome is a product of the total rows in both tables.