Which of the following logical operators is used in the WHERE clause of the SELECT statement to display the records of all the departments which belong to either sales or?

In SQL, the AND & OR operators are used for filtering the data and getting precise results based on conditions. The SQL AND & OR operators are also used to combine multiple conditions. These two operators can be combined to test for multiple conditions in a SELECT, INSERT, UPDATE, or DELETE statement.

When combining these conditions, it is important to use parentheses so that the database knows what order to evaluate each condition.

• The AND and OR operators are used with the WHERE clause.
• These two operators are called conjunctive operators.

AND Operator: 

This operator displays only those records where both the conditions condition1 and condition2 evaluates to True. 

Syntax: 

SELECT * FROM table_name WHERE condition1 AND condition2 and ...conditionN; table_name: name of the table condition1,2,..N : first condition, second condition and so on

OR Operator: 

This operator displays the records where either one of the conditions condition1 and condition2 evaluates to True. That is, either condition1 is True or condition2 is True. 
Syntax: 

SELECT * FROM table_name WHERE condition1 OR condition2 OR... conditionN; table_name: name of the table condition1,2,..N : first condition, second condition and so on

Now, we consider a table database to demonstrate AND & OR operators with multiple cases:

If suppose we want to fetch all the records from the Student table where Age is 18 and ADDRESS is Delhi. then the query will be:

Query:

SELECT * FROM Student WHERE Age = 18 AND ADDRESS = 'Delhi';

Output: 
 

ROLL_NO	NAME	ADDRESS	PHONE	Age
1	Ram	Delhi	XXXXXXXXXX	18
4	SURESH	Delhi	XXXXXXXXXX	18

Take another example, to fetch all the records from the Student table where NAME is Ram and Age is 18. 

Query:

SELECT * FROM Student WHERE Age = 18 AND NAME = 'Ram';

Output: 
 

ROLL_NO	NAME	ADDRESS	PHONE	Age
1	Ram	Delhi	XXXXXXXXXX	18

To fetch all the records from the Student table where NAME is Ram or NAME is SUJIT. 
 

Query:

SELECT * FROM Student WHERE NAME = 'Ram' OR NAME = 'SUJIT';

Output: 

ROLL_NO	NAME	ADDRESS	PHONE	Age
1	Ram	Delhi	XXXXXXXXXX	18
3	SUJIT	ROHTAK	XXXXXXXXXX	20
3	SUJIT	ROHTAK	XXXXXXXXXX	20

To fetch all the records from the Student table where NAME is Ram or Age is 20. 

Query:

SELECT * FROM Student WHERE NAME = 'Ram' OR Age = 20;

Output: 

ROLL_NO	NAME	ADDRESS	PHONE	Age
1	Ram	Delhi	XXXXXXXXXX	18
3	SUJIT	ROHTAK	XXXXXXXXXX	20
3	SUJIT	ROHTAK	XXXXXXXXXX	20

Combining AND and OR:

We can combine AND and OR operators in the below manner to write complex queries. 
 

Syntax: 

SELECT * FROM table_name WHERE condition1 AND (condition2 OR condition3);

Take an example to fetch all the records from the Student table where Age is 18 NAME is Ram or RAMESH.

Query:

SELECT * FROM Student WHERE Age = 18 AND (NAME = 'Ram' OR NAME = 'RAMESH');

Output: 

ROLL_NO	NAME	ADDRESS	PHONE	Age
1	Ram	Delhi	XXXXXXXXXX	18
2	RAMESH	GURGAON	XXXXXXXXXX	18

Which of the following logical operators is used in the WHERE clause of the SELECT statement to display the records of all the departments?

Which of the following logical operators is used in the WHERE clause of the SELECT statement?

Which operator is used in a WHERE clause to SELECT rows whose values are in a set of values?

Which operators are used in WHERE clause?