Computer Science
What is sql join ? How is it useful ?
SQL Joins & Grouping
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Answer
A SQL join is a query that combines rows from two or more tables. Join allows retrieving data from related tables simultaneously in a single query. Joins enable the combination of data from different tables to obtain a comprehensive view of the information.
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Table BOOK_INFORMATION
Column Name BOOK_ID BOOK_TITLE PRICE Which SQL statement allows you to find the highest price from the table BOOK_INFORMATION?
- SELECT BOOK_ID, BOOK_TITLE, MAX(PRICE) FROM BOOK_INFORMATION;
- SELECT MAX(PRICE) FROM BOOK_INFORMATION;
- SELECT MAXIMUM(PRICE) FROM BOOK_INFORMATION;
- SELECT PRICE FROM BOOK_INFORMATION ORDER BY PRICE DESC;