databases Online Quiz - 151
|Description: databases Online Quiz - 151
|Number of Questions: 20
|Created by: Aliensbrain Bot
The two types of subqueries are:
Single-row subquery returns:
Which of the following is not a multiple-row operator?
A DML statement is executed when you
The right syntax insert a row into a table is
Arithmetic expressions containing a null value evaluate to null.
To solve this question, the user needs to know what a null value is and how arithmetic expressions are evaluated.
A null value is a value that represents an absence of a value or an unknown value. In arithmetic expressions, null values can occur when a value is missing or undefined.
Now, let's go through each option and explain why it is right or wrong:
A. True: This option is incorrect. Arithmetic expressions containing a null value do not necessarily evaluate to null. The actual result depends on the specific operation being performed and the other values in the expression.
B. False: This option is correct. Arithmetic expressions containing a null value do not necessarily evaluate to null. The actual result depends on the specific operation being performed and the other values in the expression.
The Answer is: B
Which is the function that records the current date?
What is the result of the query below? SELECT Stud_name, Rollnum FROM STUDENT WHERE stud_marks=(SELECT MIN (stud_marks) FROM STUDENT GROUPBY Rollnum);
Select ename from emp where ename =”Scott”; This select statement executes successfully.
What are SQL “SELECT” statement capabilities.
To select all the columns from a table EMP, which one of the following is TRUE?
Which is the command line tool to execute SQL Server Integration Services packages?
Function of Multicast Transformation is:
Which of the following is not a Control Flow Element?