Attached are the fields and an example of each. I am having trouble with the following:

Show orderdate, total daily sales (in $), and total quantity (i.e. total number of units) sold in each day for plastic items. Plastic items are items that have the word plastic with any combination of upper and lower case letters in productname

Show product category and total sales (in $) for items sold in each category within the first 3 months of 2016.

Show total profit in each quarter of year 2016. The query must return total profit and quarter (i.e. 1,2,3,4)

Thanks!

orderdate date orderid character (14) 1 CA-2016-152156 shipdate shipmode character varying (15) 2016-11-11 Second Class customernumber smallint IPK integer productid category character (16) character varying (16) 459 FUR-80-1000179. Furniture subcategory character varying (12) productname character varying (150) Home/Omice Personal File unitrice real 26195 quantity smallint discount real real 2016-11-08 Bookcases 2 041 9136