Question
This SQl query selects
SELECT name
FROM instructor
WHERE salary IS NOT NULL;
Selectsa.
Tuples with null value
b.
Tuples with no null values
c.
Tuples with any salary
d.
All of the mentioned
Posted under DBMS
Engage with the Community - Add Your Comment
Confused About the Answer? Ask for Details Here.
Know the Explanation? Add it Here.
Q. This SQl query selects
Similar Questions
Discover Related MCQs
Q. In a employee table to include the attributes whose value always have some value which of the following constraint must be used ?
View solution
Q. Using the ______ clause retains only one copy of such identical tuples.
View solution
Q. You attempt to query the database with this command:
SELECT nvl (100 / quantity, NONE)
FROM inventory;
Why does this statement cause an error when QUANTITY values are null?
View solution
Q. The result of _____unknown is unknown.
View solution
Q. Aggregate functions are functions that take a ___________ as input and return a single value.
View solution
Q. A Boolean data type that can take values true, false, and________
View solution
Q. Which of the following should be used to find all the courses taught in the Fall 2009 semester but not in the Spring 2010 semester .
View solution
Q. The phrase “greater than at least one” is represented in SQL by _____
View solution
Q. Which of the following is used to find all courses taught in both the Fall 2009 semester and in the Spring 2010 semester .
View solution
Q. SQL applies predicates in the _______ clause after groups have been formed, so aggregate functions may be used.
View solution
Q. Aggregate functions can be used in the select list or the_______clause of a select statement or subquery. They cannot be used in a ______ clause.
View solution
Q. The ________ keyword is used to access attributes of preceding tables or subqueries in the from clause.
View solution
Q. Which of the following creates temporary relation for the query on which it is defined ?
View solution
Q. Subqueries cannot:
View solution
Q. Which of the following is not a aggregate function ?
View solution
Q. A Delete command operates on ______ relation.
View solution
Q. Delete from r where P;
The above command
View solution
Q. Which one of the following deletes all the entries but keeps the structure of the relation .
View solution
Q. Which of the following is used to insert a tuple from another relation.
View solution
Q. Which of the following deletes all tuples in the instructor relation for those instructors associated with a department located in the Watson building which is in department relation.
View solution
Suggested Topics
Are you eager to expand your knowledge beyond DBMS? We've curated a selection of related categories that you might find intriguing.
Click on the categories below to discover a wealth of MCQs and enrich your understanding of Computer Science. Happy exploring!
