题目
单项选择题
What is the result of the following query? `SELECT COUNT(*) FROM employees WHERE salary > 5000;`
选项
A.Returns the sum of salaries
B.Returns the minimum salary
C.Returns the total number of employees with salary greater than 5000
D.Returns the total number of employees
查看解析
标准答案
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思路分析
Let's parse the SQL statement and the structure of the query results to understand what is being asked.
Option 1: 'Returns the sum of salaries' would be produced by an aggregate function like SUM(salary), not by COUNT(*). Since the query uses COUNT(*) with a WHERE condition, this opt......Login to view full explanation登录即可查看完整答案
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