What is TRUE about SQL EXCEPT clause?
The result is purged of duplicates
Duplicate records are not removed
Only one column can be compared by a clause
None of the above
Correct Answer :
A. The result is purged of duplicates
In the case of the SQL EXCEPT clause, the result is purged of duplicates.
Related Questions
Primary keys can be contained in a table only ____?
Once
Twice
Thrice
None of the above
What does task list consist of in SQL Script?
Import
Show Quotas
Manage Results
All of the above
Which of the following is TRUE about UNIQUE constraint?
In columns that are subject to the UNIQUE constraint, duplicate values are not allowed.
Unique values will always be present in the column containing the unique constraint.
A single table can have more than one unique constraint, since it can be applied to more than one column.
All of the above
Full form of TCL is -
Transaction Common Language
Transaction Commit Language
Transaction Concatenate Language
Transaction Control Language
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
Transaction is able to control the following
Transaction
Commit
Rollback
All of the above
Network-based IDS can be used to monitor
Web server logs
When something weird occurs
All connections to the database server
None of the above
SQL Indexes slows the execution time of which statement(s)?
UPDATE
INSERT
SELECT
Both A and B
What is the difference between VARCHAR and VARCHAR2?
VARCHAR can store upto 4000 bytes and VARCHAR2 can store upto 8000 bytes.
VARCHAR can store upto 2000 bytes and VARCHAR2 can store upto 4000 bytes.
Both VARCHAR and VARCHAR2 are similar but use of VARCHAR2 is mostly recommended.
There is no similarity between VARCHAR and VARCHAR2.
What does AVG() function returns?
First value of the column
Last value of the column
Sum of rows of the table
Average value of the column
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 not an SQL Statement?
SELECT Statement
UPDATE Statement
TRUNCATE TABLE Statement
FROM Statement
What is the work of UPDATE command?
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.
Using this command, you can remove or erase recorded information from a database table.
Database data can be updated or changed using this command.
It enables you to create new databases, tables, table views, and other objects using this command.
Global Temp Variable is used with which sign?
###
####
#
##
Scripts ____ from various workspaces can be imported through import.
Exported
Imported
Changed
Saved
SQL indexes speed up the execution time of which statement(s)?
SELECT
WHERE
Both A and B
None of the above
Which clause is used to retrieve a unique element from the table?
SELECT UNIQUE
SELECT DISTINCT
Both A) and B)
None of the above
In order to prevent multiple records from being returned by the sub query, ____ must be used before the sub query.
Many Value Operators
Multiple Value Operators
Single Value Operator
Unique Value Operator
SQL EXCEPT statement behaves similar to _____operator in mathematics.
Sum
Multiply
Minus
Divide
In the script field, script is found by entering the
Script Name
Script Number
Script ID
Script Symbol
In which clause does the BETWEEN operator is used?
IF
AS
WHERE
EXCEPT
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.
Select the function which is not the Scalar Function(s)?
UCASE()
LEN()
SUM()
NOW()
In order to delete the database, which keyword is used?
DROP
DELETE
ALTER
None of the above
From the set of results, in order to remove the duplicate columns, ____ Clause is used.
DUPLICATE
DISTINCT
REMOVE
DROP
NULL means
ZERO
-1
1
Empty
To get a record from one table, which is not present in another table, we can use the clause
CONCAT
COPY
EXCEPT
ALTER
What does the DELETE Statement do?
A new table in SQL is created using this SQL statement.
By deleting the stored data, this SQL statement deletes the database.
Columns in the SQL database can be created, deleted, or modified with this SQL statement.
By executing this SQL statement, you remove the table and all the information that it contains, including the structure, views, permissions, and triggers.
In the database table, data types describe the kind of ___ that it can contain.
Table
Data
Number
None of the above
Which function returns the largest value of the column?
MIN()
MAX()
LARGE()
AVG()