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SQL Tutorial - 17: Logical Operators (Part-1) Video Lecture | Microsoft SQL for Beginners - Database Management

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FAQs on SQL Tutorial - 17: Logical Operators (Part-1) Video Lecture - Microsoft SQL for Beginners - Database Management

1. What are logical operators in SQL?
Ans. Logical operators in SQL are used to combine multiple conditions in a query. They help in filtering and retrieving data based on certain criteria. The three commonly used logical operators in SQL are AND, OR, and NOT.
2. How does the AND operator work in SQL?
Ans. The AND operator in SQL is used to combine two or more conditions in a query. It returns true only if all the conditions separated by AND are true. For example, if we have two conditions A and B, the query will only return rows where both condition A and condition B are true.
3. What is the purpose of the OR operator in SQL?
Ans. The OR operator in SQL is used to combine two or more conditions in a query. It returns true if any of the conditions separated by OR is true. For example, if we have two conditions A and B, the query will return rows where either condition A or condition B or both are true.
4. How can the NOT operator be used in SQL?
Ans. The NOT operator in SQL is used to negate a condition. It returns true if the condition following the NOT operator is false. For example, if we have a condition A, the query with NOT A will return rows where condition A is false.
5. Can logical operators be used in combination with other operators in SQL?
Ans. Yes, logical operators can be used in combination with other operators in SQL. They can be used to create complex conditions by combining multiple operators such as comparison operators (=, <>, >, etc.) or arithmetic operators (+, -, *, /, etc.) with logical operators (AND, OR, NOT). This allows for more flexible and powerful querying of data.
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