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SQL - Logical Functions
SQL - Logical Functions
SQL logical functions are used primarily for checking (or testing) the truth of some conditions. A logical function performs a logical operation or comparison on objects and expressions and returns a boolean value −
| Sr.No. | Function & Description |
|---|---|
| 1 |
Returns a item from the pst at the specified index value. |
| 2 |
Returns a one of two values, depending on the boolean-expression. |
| 3 |
Returns NULL if both expressions are equal. |