databases Online Quiz - 162
|Description: databases Online Quiz - 162|
|Number of Questions: 20|
|Created by: Aliensbrain Bot|
When is a Cartesian product formed?
The minimum number of join statements required to join 10 tables together are:
A Non equi-join is a join condition that does not contain an equality operator.
Arithmetic expressions containing a null value evaluate to null.
To select all the columns from a table EMP, which one of the following is TRUE?
What are the two types of SQL Functions?
Single-Row Functions can return multiple results per row.
To answer this question, we need to understand what single-row functions are and how they operate.
Single-row functions are functions in SQL that operate on a single row and return a single result per row. These functions take one or more arguments and perform calculations or manipulations on the values of the row to produce a single output value.
Since single-row functions are designed to operate on a single row and return a single result, they cannot return multiple results per row. Therefore, the correct answer is:
B) False - Single-row functions cannot return multiple results per row.
Which of these is not a Single-Row Function?
Compare the output of the following: SELECT TRUNC(99.57,1) FROM DUAL; and SELECT ROUND(99.57,1) FROM DUAL;
A Literal is enclosed in double quotes.