The AND and OR operators are used to combine two or more conditions in a SELECT, INSERT, UPDATE, or DELETE statement in SQL. The AND operator displays a record if all the conditions separated by AND are TRUE. The OR operator displays a record if any of the conditions separated by OR is TRUE. These operators filter out records that do not satisfy the given criteria.
The AND operator is a logical operator that combines two or more conditions in a SQL statement.
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
This statement is used to retrieve specific records from a table. The table_name specifies which table to access, and the conditions are used to specify which records to retrieve from the table. The statement will return all records that match all of the conditions provided.
SELECT * FROM Employees WHERE salary > 50000 AND department = 'sales'
Explanation: The above example returns all employees with a salary greater than 50000 and are in the sales department.
The OR operator is a logical operator in SQL that combines two or more expressions to return true if any of the conditions are true.
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
This code retrieves records from a table with a certain set of conditions. It will select all data from the table specified by table_name and then filter the results based on the specified conditions (condition1, condition2, etc). The query will return all records that match any of the specified conditions.
|EmployeeID||First Name||Last Name|
SELECT * FROM employees WHERE last_name = 'Smith' OR first_name = 'John';
Explanation: This example uses the OR operator to select all employees whose last name is Smith OR whose first name is John. The database will return any records that match the WHERE clause's conditions.
Combining AND and OR:
SELECT column_name(s) FROM table_name WHERE condition1 AND/OR condition2;
This syntax is utilized to choose certain columns from a table in a database based on numerous conditions. The conditions can be combined utilizing either the AND or the OR operator. The AND operator is utilized to indicate that all conditions must be met, whereas the OR operator is utilized to indicate that at slightest one of the conditions must be met
SELECT * FROM Customers WHERE City = 'Berlin' AND Country = 'Germany';
This example uses both the AND and OR operators to select records from the "Customers" table where the "City" is equal to "Berlin" and the "Country" is equal to "Germany".
The AND and OR operators can be utilized in SQL to combine numerous Boolean expressions to create a single expression. The AND operator returns genuine in the event that all of its operands are genuine, whereas the OR operator returns genuine on the off chance that at least one of its operands is genuine. Both operators can be utilized to form complex queries to contract down comes about and discover the precise information that's required.
Answer: A. AND
Answer: B. OR
Answer: B. OR
Answer: A. AND
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