/* Write one SELECT statement to solve each of the four queries below.

Query 1. Write one SELECT statement to display SupplierID and Avg_UnitPrice of each supplier. Avg_UnitPrice is the average unit price of products of a supplier. Sort output by SupplierID. Hint: all suppliers are included

Query 2. Copy the statement of Query 1 and modify it to display SupplierID and Avg_UnitPrice of suppliers whose average unit price is between $15 and $22. Sort output by SupplierID. Hint: 8 suppliers

Query 3. Copy the statement of Query 2 and modify it to display SupplierID and Avg_UnitPrice of suppliers whose average unit price is ranked #1 and #2 (i.e., the highest two averages). Hint: 3 suppliers

Query 4. Copy the statement of Query 3 and modify it to display the same output plus two more columns: CompanyName and Phone of each included supplier. Hint: 3 suppliers, join Suppliers table */

o o dbo.Categories o Columns CategoryID (PK, int, not null) CategoryName (nvarchar(15), not null) Description (nvarchar(max), null) Keys PK_Categories # Constraints # Triggers + Indexes # Statistics dbo.Products o Columns ProductID (PK, int, not null) ProductName (nvarchar(40), not null) O SupplierlD (FK, int, null) - CategoryID (FK, int, null) QuantityPerUnit (nvarchar(20), null) UnitPrice (money, null) UnitsInStock (smallint, null) UnitsOnOrder (smallint, null) ReorderLevel (smallint, null) Discontinued (bit, not null) o Keys PK_Products Om FK_Products Categories - FK_Products Suppliers # Constraints # Triggers + Indexes Statistics dbo.Suppliers o Columns SupplierlD (PK, int, not null) CompanyName (nvarchar(40), not null) ContactName (nvarchar(30), null) Contact Title (nvarchar(30), null) Address (nvarchar(60), null) City (nvarchar(15), null) Region (nvarchar(15), null) PostalCode (nvarchar(10), null) Country (nvarchar(15), null) Phone (nvarchar(24), null) Fax (nvarchar(24), null) HomePage (nvarchar(max), null) Keys PK_Suppliers O