试题详情
单项选择题 EXHIBIT, Emp Table Exhibit A Exhibit B Examine the data from the EMP table. Evaluate this SQL statement: SELECT * FROM emp WHERE emp _ id = 3); WHERE commission = (SELECT commission FROM emp What is the result when the query is executed?（）

A、Exhibit A

B、Exhibit B 

C、The query returns no rows 

D、The query fails because the outer query is retrieving more than one column

E、The query fails because both the inner and outer queries are retrieving data from the same table.

  • C

  • 关注下方微信公众号，在线模考后查看

热门试题