From the set of results, in order to remove the duplicate columns, ____ Clause is used.
DUPLICATE
DISTINCT
REMOVE
DROP
Correct Answer :
B. DISTINCT
From the set of results, in order to remove the duplicate columns, DISTINCT Clause is used. It is used in conjunction with SELECT keyword.
Related Questions
Using which SQL Comparison Operator can we find the data that matches our query?
SQL Not Equal Operator (!=)
SQL Equal Operator (=)
SQL Greater Than Operator (>)
SQL Less Than Operator (<)
Which of the following is/are transaction control commands in SQL?
Commit
Rollback
Both A. and B.
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
Command that comes under DCL is/are -
GRANT
REVOKE
Both A. and B.
None of the above
In LIKE clause, to represent a zero, a character, or a number of characters ___ is used.
/
_
*
%
Full form of DML is
Data Multiplication Language
Data Manipulation Language
Data Modify Language
Data Mapping Language
To connect strings, which function is used
CONNECT
ADD
COMBINE
CONCAT
When two or more columns are combined to be used to uniquely identify each row in the table, it is known as -
Primary Key
Unique Key
Composite Key
Foreign Key
What does the TRUNCATE TABLE Statement do?
In the database management system, this SQL statement deletes the existing database, together with all the database tables and views.
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.
By executing this SQL statement, all records in the SQL database will be deleted.
The data specified in this table or view is reported in this SQL statement.
Which of the following is not MySQL String Data Type?
TEXT(Size)
TINYTEXT
MEDIUMTEXT
LARGETEXT
Which function is used to extract substrings from the column of the table
ROUND()
MID()
FORMAT()
NOW()
Which statement is not true about SQL?
Using SQL in relational databases is all about inserting, updating, and deleting data.
Sample data can also be described with the aid of this tool.
It helps develop relational database functions, events, and views.
A SQL user can also set restrictions and permissions for a table column, a view, and a stored procedure.
What is the work of CREATE command?
Using this command, you can remove or erase recorded information from a database table.
It enables you to create new databases, tables, table views, and other objects using this command.
Inserting records or data into the database tables is accomplished with this command. In addition to inserting records in single rows, we can insert records in multiple rows as well.
A single or multiple rows can be accessed using this command from one or more tables of a database. Using the WHERE clause with this command is also possible.
Which statement is true about the SQL?
SQL databases are vertically scalable.
SQL follows BASE Model.
SQL database cannot handle complex queries.
SQL database does not require object-relational mapping.
In order to start the transaction, the command used is
Mysql > START COMMIT;
Mysql > START TRANSACTION;
Mysql > START ROLLBACK;
None of the above
We can create View in SQL using
CREATE statement
CREATE VIEW statement
VIEW CREATE statement
SQL VIEW statement
A Sub query is an SQL expression that is placed ____ another SQL statement.
Before
After
Inside
Outside
What does SQL is used to perform operations on?
Update Records
Insert Records
Both A and B
None of the above
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 of the following is TRUE about Savepoint command?
A transaction is marked in a table by this TCL command.
Imagine that you are making a long table, and you want to roll back only to a specific point in the table. You can do this with the savepoint.
In order to rollback part of a table rather than the entire table, a savepoint is useful.
All of the above
If multiple columns are used as Primary Key, it is known as
Unique
Composite
Foreign
None of the above
In order to merge two or more strings, which string function is used?
CHAR
ALTER
CONCAT
MERGE
When an expression includes ___ SQL operator(s), the sequence in which they are evaluated is known as the SQL operator's precedence.
0
1
Multiple
NULL
Determine the correct SQL command?
CREATE
UPDATE
DELETE
All of the above
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.
What is the syntax of SQL CAST Function?
CAST (expression AS [data type])
CAST (expression IN [data type])
CAST (expression TO [data type])
CAST (expression FOR [data type])
In LIKE clause, to represent a single character, _____ is used.
-
_
!
&
Using which clause, can SQL EXCEPT be used in single table?
TO
AS
WHERE
IN
Which clause is used to retrieve a unique element from the table?
SELECT UNIQUE
SELECT DISTINCT
Both A) and B)
None of the above
What is the functionality of SQL COUNT?
It returns the no of record of table
It returns the no of record of database
It returns the no of record of row
It returns the no of record of column