题目
题目
单项选择题

Question at position 37 COUNT(*) tallies only those rows that contain a value, while COUNT counts all rows.TrueFalse

选项
A.True
B.False
查看解析

查看解析

标准答案
Please login to view
思路分析
The question states: 'Question at position 37 COUNT(*) tallies only those rows that contain a value, while COUNT counts all rows. True/False' Option 1: True - This claim is not accurate. COUNT(*) does not tally only rows with non-nul......Login to view full explanation

登录即可查看完整答案

我们收录了全球超50000道考试原题与详细解析,现在登录,立即获得答案。

类似问题

Question at position 50 COUNT(*) tallies only those rows that contain a value, while COUNT counts all rows.TrueFalse

Question at position 45 COUNT(*) tallies only those rows that contain a value, while COUNT counts all rows.TrueFalse

Question at position 21 Which of the following questions is answered by the SQL statement? SELECT COUNT (Product_Description) FROM Product_T;How many characters are in the field name "Product_Description"?How many products are in the table Product_T?How many different columns named "Product_Description" are there in table Product_T?How many products have product descriptions in the Product Table?

Question at position 9 Which of the following questions is answered by the SQL statement? SELECT COUNT (Product_Description) FROM Product_T;How many characters are in the field name "Product_Description"?How many products are in the table Product_T?How many different columns named "Product_Description" are there in table Product_T?How many products have product descriptions in the Product Table?

更多留学生实用工具

加入我们，立即解锁 海量真题 与 独家解析，让复习快人一步！