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landing/docs/Introduction-To-Databases/016-Logical-operator-keywords.md Normal file
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# Logical Operator Keywords
Here are the most important Logical Operators summarized in a table.
Logical Operators can be used for conditions as they show a result in form of a `boolean` (True/False) or Unknown.
So, e.g. if an exact value is `True` for a value, a Logical Operator can proof that it's True.
| Logical Operator | Explanation |
|------------------|-------------|
| ALL | If all comparisons are True: return True |
| ANY | If any comparison is True: return True |
| AND | If both expressions are True: return True |
| EXISTS | If a subquery contains rows: return True |
| IN | If compared value is equal to at least one value: return True |
| BETWEEN | If there are values in given range: return True |
| NOT | Reverses the value of any boolean |
| OR | If either expression is True: return True |