When SELECT statements used to create Views contain ____ clauses, the views cannot be updated.
JOIN
HAVING
GROUP BY
All of the above
Correct Answer :
D. All of the above
When SELECT statements used to create Views contain JOIN, HAVING, or GROUP BY clauses, the views cannot be updated.
Related Questions
Which function returns the largest value of the column?
MIN()
MAX()
LARGE()
AVG()
Which clause is needed in CTE SQL syntax?
FOR
AS
WITH
TO
What does the following statement do?
Finds any values that start with a
Finds any values that start with a%
Finds any values that contains only two characters starting with a
All of the above
Why index is important in SQL?
The large database can be searched quickly with SQL Indexes.
The concept below is a quick way to include different values in those columns.
A smaller table may not recognize the performance of an index when used with an index.
All of the above
Which of the following is the type of SQL Injection attack?
It inserts the data
It updates the data
It deletes the data
All of the above
What does the following statement do?
Finds any values that start with a and ends with o
Finds any values whose first character is a and third character is o
Both A. and B.
None of the above
____ and ____constraints form the core of the PRIMARY KEY constraint.
NOT NULL , CHECK
NOT NULL , DEFAULT
NOT NULL , FOREIGN KEY
NOT NULL , UNIQUE
For one table, there can be ____unique key constraint(s).
1
NULL
Many
None of the above
What is the difference between MIN and MAX function?
MIN function is used to show the minimum data and MAX function is used to show the maximum data.
MIN function is used to show the maximum data and MAX function is used to show the minimum data.
Both of the above
None of the above
SQL Division operator divides the operand on the ____ side by the operand on the ____ side.
Left, Left
Right, Left
Left, Right
Right, Right
Numbers of operand used by Binary Operators are?
1
2
3
4
What does the INSERT INTO Statement do?
In this SQL statement, the data or records are inserted into an existing database table. One query statement can insert multiple records simultaneously using this statement.
A new database will be created through this SQL statement.
In the database management system, this SQL statement deletes the existing database, together with all the database tables and views.
By executing this SQL statement, all records in the SQL database will be deleted.
Full form of DCL is -
Data Control Language
Data Commit Language
Data Common Language
Data Concatenate Language
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.
Primary keys can be contained in a table only ____?
Once
Twice
Thrice
None of the above
What does the DROP INDEX Statement do?
By running this SQL statement, the transaction will be undone and the operations not yet saved to the SQL database will be undone.
The SQL database table's index is deleted using this SQL statement.
An index is created in a SQL database table with this SQL statement.
An existing SQL database is selected with this SQL statement. A database must be selected from several existing databases before you can perform operations on the table.
To connect strings, which function is used
CONNECT
ADD
COMBINE
CONCAT
What is the clause to delete all rows from the table?
SQL DELETE ALL ROWS Table_Name;
SQL DELETE ROWS Table_Name;
DELETE FROM ALL ROWS Table_Name;
DELETE FROM Table_Name;
What does the following statement do?
Finds any values that start with or
Finds any value that contains only four characters and second, third characters are 'o', 'r'
Finds any values that have or in any position
None of the above
The SELECT TOP statement shows the limited number of:
Rows
Columns
Tables
None of the above
What does the CREATE INDEX Statement do?
An index is created in a SQL database table with this SQL statement.
Changes made in the SQL database transaction are permanently saved using this SQL statement.
By running this SQL statement, the transaction will be undone and the operations not yet saved to the SQL database will be undone.
The SQL database table's index is deleted using this SQL statement.
SQL BETWEEN is a ______ operator.
Relational
Logical
Arithmetic
Assignment
A Sub query is an SQL expression that is placed ____ another SQL statement.
Before
After
Inside
Outside
In order to build a link between two tables, which key is used?
Primary
Foreign
Composite
Unique
To rename the Index, we need to use which command?
RENAME
ALTER
UPDATE
ADD
To add a Primary Key constraint after table is created, which clause is used?
UPDATE
ADD
ALTER
JOIN
What does the ROLLBACK Statement do?
Specify the columns of the table in this SQL statement to return distinct values.
Changes made in the SQL database transaction are permanently saved using this SQL statement.
By running this SQL statement, the transaction will be undone and the operations not yet saved to the SQL database will be undone.
An index is created in a SQL database table with this SQL statement.
TRUNCATE TABLE requires:
WHERE clause
HAVING clause
Both a and b
None of the above
Which of the following clause is optional in SQL SELECT Statement?
SELECT
FROM
HAVING
None of the above
What is meant by 'SQL is an interactive language'?
Learning and understanding SQL is easy
It can also be used for communicating with the database.
In a few seconds, complex queries can also be answered using this language.
All of the above