Select ________ dept_namefrom instructor;Here which of the following displays the unique values of the column?FromNameDistinctAll
Question
Select ________ dept_name from instructor;
Here which of the following displays the unique values of the column?
- From
- Name
- Distinct
- All
Solution
Break Down the Problem
- Identify the SQL keywords and their meanings.
- Understand the requirement to display unique values from the
dept_name
column.
Relevant Concepts
- SELECT: Used to select data from a database.
- DISTINCT: A keyword that ensures the results contain only unique values from the column specified.
Analysis and Detail
-
The SQL query structure requires the use of the
DISTINCT
keyword to fetch unique values. -
The correct syntax to select unique values from the
dept_name
column of theinstructor
table is:SELECT DISTINCT dept_name FROM instructor;
Verify and Summarize
- The term
All
is not applicable when the goal is to display unique values; it would return all values, including duplicates. - The term
FromName
appears to be irrelevant within this context, as it is not standard SQL syntax.
Final Answer
The correct keyword for displaying unique values of the dept_name
column is DISTINCT. Thus, the final query is:
SELECT DISTINCT dept_name FROM instructor;
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