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# SQL Logical Operators
SQL Logical Operators evaluate boolean conditions to filter data, primarily used in `WHERE` and `HAVING` clauses. They are fundamental for constructing precise data retrieval queries and controlling program flow based on dataset characteristics. Understanding their behavior is essential for writing effective and performant database interactions.
## Logical Operator Keywords
| Logical Operator | Explanation |
| :--------------- | :----------------------------------------------------------------- |
| ALL | Returns TRUE if all comparisons in a subquery are TRUE. |
| ANY | Returns TRUE if any comparison in a subquery is TRUE. |
| AND | Returns TRUE if both boolean expressions are TRUE. |
| EXISTS | Evaluates to TRUE if the subquery returns one or more rows. |
| IN | Checks if a value matches any value in a list or subquery. |
| BETWEEN | Tests if a value is within a given range (inclusive). |
| NOT | Negates a boolean expression. |
| OR | Returns TRUE if either boolean expression is TRUE. |