Q5). Write a query that extracts all Table 1. Customers_table the records in the customers table where the customer_id last_name first_name favorite_website 4000 Jackson Joe techonthenet.com Customer's favorite website contains no 5000 Smith Jane digminecraft.com Information. 6000 Ferguson Samantha bigactivities.com 7000 Reynolds Allen checkyourmath.com 8000 Anderson Paige NULL 9000 Johnson Derek techonthenet.com
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.
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