Write insert statements to enter first two records into Table 1 as shown in above figure. b. Display a list that presents the data contained in Table 1 sorted by column 2 in descending order. Display the name of author who has written Harry Potter book. How many books have been written by each author?
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.
Consider the tables provided below and answer the following SQL questions:
Table 1: Author
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AuthorID
AuthorName
- Dennis Lehane
- Agatha Christie
- K Rowling
Table 2: Book
BookID
BookName
- Harry Potter and the Goblet of Fire
- Harry Potter and the Deathly Hallows
- Murder on the Orient Express
- Prayers for Rain
- Death on the Nile
- Harry Potter and the Chamber of Secrets
Questions:
AuthorID
Write insert statements to enter first two records into Table 1 as shown in above figure.
b.
Display a list that presents the data contained in Table 1 sorted by column 2 in descending order.
- Display the name of author who has written Harry Potter book.
- How many books have been written by each author?
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