Further, they point out that these pop-up businesses are powered by whatâs becoming known as âgig workersâ â a term borrowed from the music industry, where musicians move from job to job (gig to gig), employed for a particular performance or a defined time, with little more connection to the venue than to the fast food theyâre eating for lunch.
Answer: B. Multiple-row subqueries return more than one row of results.Operators that can be used with multiple-row subqueries include IN, ALL, ANY, and EXISTS.The multi row operators IN, ANY, ALL must be used with single row operators as shown in the option B.
Multiple-Row Subquery. Multiple-Column Subquery. Subqueries can be used to answer queries such as who has a salary more than Tom's. For such query, two queries have to be executed: the first query finds Tom's salary and the second finds those whose salary is greater than Tom's.