SET Operators are used to
Compile the results from two queries
Compile the results from three queries
Compile the results from four queries
Compile the results from five queries
Correct Answer :
A. Compile the results from two queries
SET Operators are used to compile the results from two queries.
Related Questions
How MySQL determines which one to use, FLOAT or DOUBLE, using the p parameter?
If p comes between 0 to 25, data type becomes FLOAT(). If p comes between 26 to 54, data type becomes DOUBLE().
If p comes between 26 to 54, data type becomes FLOAT(). If p comes between 0 to 25, data type becomes DOUBLE().
If p comes between 25 to 53, data type becomes FLOAT(). If p comes between 0 to 24, data type becomes DOUBLE().
If p comes between 0 to 24, data type becomes FLOAT(). If p comes between 25 to 53, data type becomes DOUBLE().
Which syntax is correct for RENAME DATABASE in MySQL?
RENAME old_database_name TO new_database_name;
RENAME DATABASE old_database_name TO new_database_name;
ALTER old_database_name MODIFY NAME = new_database_name;
ALTER DATABASE old_database_name MODIFY NAME = new_database_name;
To get a record from one table, which is not present in another table, we can use the clause
CONCAT
COPY
EXCEPT
ALTER
Which of the following statement is correct for SQL Multiplication Operator?
SELECT Operand1+Operand2;
SELECT Operand1*Operand2;
SELECT Operand1**Operand2;
SELECT Operand1
All other columns other than the column which is termed as Primary Key, are known as
Unique Keys
Alternate Keys
Composite Keys
None of the above
What is the difference between HAVING and WHERE clause?
HAVING clause is used in column operation whereas WHERE clause is used in row operation.
HAVING clause is post-filter whereas WHERE clause is pre-filter.
HAVING clause filters the groups whereas WHERE clauses filter the single record of the table.
All of the above
What is the shortcut key to open SQL Script?
Ctrl+Shift+S
Ctrl+Shift+Q
Ctrl+Shift+N
Ctrl+Shift+O
Which of the following is TRUE about Information Rule in the 12 Codd's Rules?
The primary key value, table name, and column name are characteristics that allow us to access the precise data (atomic value) logically from a relational database.
Null values are treated in database records according to this rule.
Database systems must update all views tables on a regular basis.
Databases contain a wide variety of information, and each row and column of each table must hold this information.
Which of the following is NOT the SQL Arithmetic Operator?
Addition
Subtraction
Unary
Modulus
SELECT INTO statement -
Select the content from a table.
Rename the content in a table.
Copy the content from one table into another existing table.
None of the above
Which of the following statement is TRUE?
A DATABASE name can be renamed.
A TABLE name can be renamed.
Both A and B
None of the above
In the relational database, in order to modify index, we need to use which command?
ALTER
MODIFY
UPDATE
ADD
Which of the following statement is TRUE?
At run time, temporary tables can be created.
Temporary table can do similar operations to normal table.
Both A) and B)
None of the above
Which of the following are not MySQL Date and Time Data Type?
DATE
TIME(fsp)
YEAR
None of the above
Select the correct statement.
TRUNCATE TABLE is faster than DELETE TABLE statement.
TRUNCATE TABLE uses fewer resources than DELETE TABLE statement.
Both A) and B)
None of the above
What will be the output of the below SQL statement?
2021-10-06 00:00:00.000
2021-10-06
2021 OCT 06
06-10-2021
In order to execute a query in Web SQL, which function is used?
open()
translate()
transaction()
execute()
Using the ___ statement, a database can be renamed.
SQL CREATE DATABASE
SQL RENAME DATABASE
SQL DROP DATABASE
SQL SELECT DATABASE
____ Clause is used in Parent-child relationship in order to join two or more tables.
FROM
TO
WHERE
IN
Which of the following statement is false?
There is no difference between a lower case and upper case keyword in SQL.
It is easier to read SQL queries when the keywords are in lowercase.
An SQL statement's syntax is determined by its text line.
One or more SQL statements can be placed on a single line of text.
What can be the maximum size of char(n) in SQL Server String Data Type?
7000
8000
9000
10000
To delete table definition and all data from the table, which statement is used?
DELETE
DROP
ALTER
None of the above
In the case of ____ Independence Rule, Physical independence of data to access the database is a requirement for a database or an application.
Physical Data
Logical Data
Integrity
Distribution
Which syntax is used to show all the databases?
USE DATABASES;
SELECT DATABASES;
SHOW DATABASES;
None of the above
Which of the following constraints are TRUE to be put in Password system?
One uppercase character must be included in the password.
An eight-character minimum password is required.
At least one symbol must appear in the password.
All of the above
Select the Aggregate function(s) among the following.
AVG()
FIRST()
LAST()
All of the above
If multiple columns are used as Primary Key, it is known as
Unique
Composite
Foreign
None of the above
Which clause is needed in CTE SQL syntax?
FOR
AS
WITH
TO
How many temp tables are there?
1
2
3
4
SQL became the standard of?
ASCII
ANSI
ISO
Both B and C