Using the Online SQL Editor, answer the following questions with screenshots. Link: https://www.programiz.com/sql/online-compiler/ 1. Show all records from the Customers table, sort the result reversed alphabetically by Country. Answer(screenshot of code & output from SQL Editor). 2. Show the complete names (first & last name), age, and country from the Customers table, sort the result alphabetically, first by last name, then, by first name. Answer(screenshot of code & output from SQL Editor). 3. Provide the last three records of the customers’ complete names (first & last name), but showing only those with ages older than 22 or those living in the United Kingdom. Answer(screenshot of code & output from SQL Editor). 4. Provide all the items and corresponding amounts from the orders table; but showing only items with amounts of 250 and 400; then sort the list according to amount (descending order); finally, change the name of amount to “Items_on_sale”. Answer(screenshot of code & output from SQL Editor).
SQL
SQL stands for Structured Query Language, is a form of communication that uses queries structured in a specific format to store, manage & retrieve data from a relational database.
Queries
A query is a type of computer programming language that is used to retrieve data from a database. Databases are useful in a variety of ways. They enable the retrieval of records or parts of records, as well as the performance of various calculations prior to displaying the results. A search query is one type of query that many people perform several times per day. A search query is executed every time you use a search engine to find something. When you press the Enter key, the keywords are sent to the search engine, where they are processed by an algorithm that retrieves related results from the search index. Your query's results are displayed on a search engine results page, or SER.
Using the Online SQL Editor, answer the following questions with screenshots.
Link: https://www.programiz.com/sql/online-compiler/
1. Show all records from the Customers table, sort the result reversed alphabetically by Country. Answer(screenshot of code & output from SQL Editor).
2. Show the complete names (first & last name), age, and country from the Customers table, sort the result alphabetically, first by last name, then, by first name. Answer(screenshot of code & output from SQL Editor).
3. Provide the last three records of the customers’ complete names (first & last name), but showing only those with ages older than 22 or those living in the United Kingdom. Answer(screenshot of code & output from SQL Editor).
4. Provide all the items and corresponding amounts from the orders table; but showing only items with amounts of 250 and 400; then sort the list according to amount (descending order); finally, change the name of amount to
“Items_on_sale”. Answer(screenshot of code & output from SQL Editor).
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