Facebook Interview Question: Write a SQL query to compute ...
Interview question for Data Scientist, Analytics in Menlo Park, CA.Write a SQL query to compute a frequency table of a certain attribute involving two joins. What if you want to GROUP or ORDER BY some attribute? What changes would you need to make? How would you account for NULLs?
Interview question for Data Scientist, Analytics in Menlo Park, CA.Write a SQL query to compute a frequency table of a certain attribute involving two joins. What if ...