Which one if these is used to put the same value in all the rows?
Group by unique column
Group by single column
Group by one column
Group by same value
Correct Answer :
B. Group by single column
Group by single column is used to put the same value in all the rows.
Related Questions
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.
When the table is truncated:
Table structure is dropped
Integrity constraints are dropped
Relationship is dropped
None of the above
What does the DROP TABLE Statement do?
The table, its structure, views, permissions, and triggers will also be deleted or removed with this SQL statement.
A new table in SQL is created using this SQL statement.
Columns in the SQL database can be created, deleted, or modified with this SQL statement.
A new database will be created through this SQL statement.
A Key which uniquely identifies each row in the table is known as?
Primary Key
Unique Key
Composite Key
Foreign Key
In case of ____Rule, 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.
Systematic Treatment of Null Values
Guaranteed Access
View Updating
Physical Data Independence
Which of the following is TRUE about SQL Auto Increment?
It increments the unique number automatically.
It decrements the unique number automatically.
It keeps the unique number constant
None of the above
What is the similarity between CLOB and NCLOB Oracle Large Object Data Types?
Both CLOB and NCLOB are used for multibyte national character set data.
Both CLOB and NCLOB can range upto 2^32-1 bytes or 4 GB.
Both CLOB and NCLOB can range upto 2^32-1 bytes or 8GB.
Both CLOB and NCLOB are used for singlebyte and multibyte national character set data.
Select the correct statement.
DDL consist of 4 commands
DCL consist of 2 commands
TCL consist of 5 commands
DML consist of 3 commands
Full form of DDL is
Data Describe Language
Definition Data Language
Data Definition Language
Data Distinct Language
What is TRUE about NOT NULL Constraint?
In columns that are subject to the NOT NULL constraint, duplicate values are not allowed.
When a table's column is declared as NOT NULL, no record in the table can have an empty value for that column.
By applying the NOT NULL constraint, we will always ensure that the column contains a unique value and won't allow nulls.
The value will first be checked for certain conditions before inserting it into the column when a NOT NULL constraint applies to a column in the table.
Which clause is used to retrieve a unique element from the table?
SELECT UNIQUE
SELECT DISTINCT
Both A) and B)
None of the above
Which of the following is the feature(s) of SQL Auto Increment?
In some cases you may not have any unique identifying characteristics in data; therefore, it makes sense to create a Primary Key.
Explicitly initializing and modifying the auto-increment value is possible at any time.
Record identifiers can easily be created that are unique to each record.
All of the above
NOW function is used to return the current
Time
Date
Date & Time
Day
In the database table, data types describe the kind of ___ that it can contain.
Table
Data
Number
None of the above
What is the default length of any data type in the CAST function?
10
20
30
40
A Sub query is an SQL expression that is placed ____ another SQL statement.
Before
After
Inside
Outside
In LIKE clause, to represent a single character, _____ is used.
-
_
!
&
Which function returns the correct date and time?
DATE()
NOW()
TIME()
DATETIME()
What does COUNT() function returns?
Average value
Largest value
Smallest value
Number of rows
Primary keys can be contained in a table only ____?
Once
Twice
Thrice
None of the above
SQL BETWEEN operators include
Starting Value
In Between Value
Ending Value
All of the above
Which syntax is correct for RENAME DATABASE in SQL?
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;
Which of the following is not the SQL Comparison Operator?
SQL Equal Operator (=)
SQL Less Than Operator (<)
SQL Greater Than Operator (>)
All of the above
What is the functionality of UCASE function?
To change the case of the string to lowercase characters.
To change the case of the string to uppercase characters.
To change the case of the string to numeric characters.
To change the case of the string to symbolic characters.
What is TRUE about SAVEPOINT?
Following the completion of a transaction, it must be executed to save all the operations performed in the transaction.
A transaction can be rolled back to its last saved state.
A specific part of a transaction can be given a name
None of the above
Which function is used to obtain the month from the entire data stored in a table's column?
DATE
TIME
MONTH
DATE & TIME
What is SQL CREATE Table used for?
To Update table
To Create table
To Delete table
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
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
Unique Index is similar to
Primary Key
Foreign Key
Composite Key
Alternate Key