Select the SQL statement that will list the first name and last name of staff, and order the result by the last name in alphabetical order.

Question

BlackTom AI · Accepted Answer

ORDER BY sorts the result rows; ASC requests ascending order (A → Z) which yields alphabetical ordering for text. In SQL you list the columns to return, name the table, then apply ORDER BY with the column to use for sorting.

1) Relevant knowledge points and concepts
- SELECT column_list retrieves specific columns.
- FROM table_name specifies the source table.
- ORDER BY column_name sorts the result set by that column.
- ASC = ascending order (default); DESC = descending order.
- You may include additional columns in ORDER BY to break ties, but the question only requires ordering by last name.

2) Step-by-step reasoning
- We want two columns: first_name and last_name, so use SELECT first_name, last_name.
- The data lives in table staff, so add FROM staff.
- To order the rows alphabetically by last name, add ORDER BY last_name ASC.
Putting those together yields:
SELECT first_name, last_name
FROM staff
ORDER BY last_name ASC;

3) Intermediate steps (SQL composition)
- Step A: SELECT first_name, last_name
- Step B: FROM staff
- Step C: ORDER BY last_name ASC
- Final statement: SELECT first_name, last_name FROM staff ORDER BY last_name ASC;

4) Why this answer is correct
- This statement returns exactly the two requested columns and sorts every returned row by last_name in ascending (alphabetical) order. ASC explicitly requests alphabetical order; omitting ASC would still default to ascending, but including it clarifies intent.

5) Why the other options are incorrect
- Options that include ORDER BY last_name ASC, first_name DESC add an extra sorting rule: when last_names tie, first_name will be sorted descending. That is more restrictive than “order by the last name” and changes ordering in tie cases.
- The option without any ORDER BY returns the names unsorted (or in unspecified DB order).
- Options using ORDER BY last_name DESC sort in reverse alphabetical order, which contradicts the requirement.

Conclusion: The correct SQL is
SELECT first_name, last_name
FROM staff
ORDER BY last_name ASC;
This matches the provided answer.

Select the SQL statement that will list the first name and last name of staff, and order the result by the last name in alphabetical order.单项选择题

类似问题

SELECT the SQL statement that lists the five highest paid employees

Select the SQL Statement will list the first name, last name and calculate the number of years the staff member has been employed.

Select the SQL Statement that will count all of the office locations that are in Australia

Which of the following SQL statements can be used to select all the records from a table named "Persons" where the "firstName" is "Joe"?

HAVING is used to filter grouped results, while WHERE filters rows before grouping.

Which SQL statement below does the following MongoDB script most closely correspond to? db.students.find( {age: 18}, {name: 1, _id :0} )

tblScores [table] StudentID | Score 1 | 54 2 | 53 3 | 52 4 | 51 5 | 50 6 | 49 7 | 48 8 | 47 9 | 46 10 | 50 [/table] Query1SELECT StudentID, ScoreFROM tblScoresWHERE Score > 50 If Query1 was run on the table how many records would be returned?

Select all statements that correctly match SQL clauses to their function.

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单