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Question: Write a SELECT statement that returns three columns: EmailAddress, OrderID, and the order total for each customer. To do this, you can group the result set by the EmailAddress and OrderID columns.
In adding, you must evaluate the order total from the columns in the OrderItems table.
Write a second SELECT statement that uses the first SELECT statement in its FROM clause. The main query should return two columns: the customer's email address and the largest order for that customer. To do this, you can group the result set by the EmailAddress column.
Prepare the write a select statement the returns three given columns.
I have the answer already but i do not understand it; I need expert to guide through it step by step. thanks!
Turn this SQL query into a relational algebra statement? SELECT Request.reqfor, Ordering.invamt, Ordering.invnbr, Ordering.invdat
Display all the LastNames from the Customers table and any associated OrdersIDs from the Orders Table. Show the LastName even if they do not have any associated orders. Order the results by LastName in ascending order.
Describe some techniques for gathering requirements to develop SQL queries. Provide an example using a business case.
Create a table called TransactionLog. Create a trigger, which inserts a new record (user CardNo, ISBN, date) into the TransactionLog table whenever the a borrower checks out a book or returns a book.
Student.txt in the attachment contains the roster of a class. Each student object has the following fields: student id, last name, first name, academic level.Create a RosterClass to store the student database in vector.
Pretend that you are on the boards of the American National Standards Institute (ANSI) and the International Organization for Standards (ISO), two of the organizations who standardized SQL
Identify which data components are the entities and attributes, and the relationship between each using an object representation diagram through the use of graphical tools such as Microsoft Visio, or an open source alternative such as Dia.
Write a script that provides all of the information in, and duplicates the formatting of, Oracle's SQL*Plus describe command. Additionally, the output should add the comments on the rows.
in this problem we will consider a movie database with three tablesmoviedirectortitle director yearmoviecasttitle actor
write an sql statement to display the SKU, SKU_Description, WareHouse ID, and QuantityOnHand for all products having a QuantityOnOrder equal to 0. Sort the results in descending order by WareHouse ID and in ascending order by SKU
Describe and explain Oracle Date and Time Format in details. Provide some Functions used for Date and Time and give some syntax example of their usage. Expand your examples to include some Arithmetic used with Oracle Date.
Create a PL/SQL block to achieve the following using the HR schema and select the name, salary, and department of the employee with the maximum salary.
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