62 lines
2.5 KiB
SQL
62 lines
2.5 KiB
SQL
-- #### Start of class stuff ####
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-- Get the InvoiceID, InvoiceTotal, and InvoiceDueDate for all invoices for vendor 110
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SELECT InvoiceID, InvoiceTotal, InvoiceDueDate
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FROM Invoices
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WHERE VendorID = 110
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-- Get the latest 10 invoices for vendor 123: InvoiceID, InvoiceDueDate, InvoiceTotal
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SELECT TOP 10 InvoiceID, InvoiceTotal, InvoiceDueDate
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FROM Invoices
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WHERE VendorID = 123
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ORDER BY InvoiceDueDate DESC
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-- Get the InvoiceID, VendorID, InvoiceDueDate, and InvoiceTotal for all invoices due between 1/1/2020 and 1/31/2020
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SELECT InvoiceID, VendorID, InvoiceDueDate, InvoiceTotal
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FROM Invoices
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WHERE InvoiceDueDate BETWEEN '1/1/2020' AND '1/31/2020'
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-- ######################################################################## --
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-- Get top 10 unpaid invoices
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SELECT TOP 10 InvoiceID, VendorID, InvoiceTotal, InvoiceDueDate FROM Invoices
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WHERE PaymentDate IS NULL
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ORDER BY InvoiceDueDate
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SELECT VendorID, VendorName, VendorContactLName, VendorContactFName FROM Vendors
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WHERE VendorID IN (72, 83, 80, 123, 110, 106, 37) -- Output from last query
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-- Combine them with JOIN
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SELECT TOP 10 InvoiceID, Invoices.VendorID, InvoiceTotal, InvoiceDueDate, VendorName, VendorContactLName, VendorContactFName
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FROM Invoices
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JOIN Vendors ON Invoices.VendorID = Vendors.VendorID
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WHERE PaymentDate IS NULL
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ORDER BY InvoiceDueDate
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-- Get all vendors with invoices
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-- inter-JOINs only return rows that match on both tables
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SELECT DISTINCT v.VendorID, VendorName FROM Vendors v
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JOIN Invoices i ON v.VendorID = i.VendorID
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-- Outer-JOIN: Returns all of a table plus anything in the other
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-- Get all vendors and invoices if they have any
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SELECT v.VendorID, VendorName, InvoiceID FROM Vendors v
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LEFT JOIN Invoices i ON v.VendorID = i.VendorID
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-- LEFT or RIGHT determines which is the "main one" that the other is joined to
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-- CROSS JOIN - combine the tables???
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SELECT v.VendorID, VendorName, InvoiceId
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FROM Vendors v CROSS JOIN Invoices i
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ORDER BY VendorID
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-- Get employees and their managers
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SELECT e.EmployeeID, e.LastName, e.FirstName, m.FirstName + ' ' + m.LastName ManagerName
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FROM Employees e JOIN Employees m ON e.ManagerID = m.EmployeeID
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-- Customers table has FK Cities, Cities FK State, State FK Countries
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-- To get full address of customers
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SELECT c.CustomerId, c.CustomerName, PostalAddressLine1, ci.CityName, sp.StateProvinceName, cty.CountryName
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FROM Sales.Customers c
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LEFT JOIN application.Cities ci ON c.DeliveryCityID = ci.CityID
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JOIN application.StateProvinces sp ON sp.StateProvinceID = ci.StateProvinceID
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JOIN application.Countries cty ON cty.CountryID = sp.CountryID |