SQL
General-Purpose Window Functions
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|   |   |
|:--|:--------|
| **Description** |Returns `expr` evaluated at the row that is the last row (among rows with a non-null value of `expr` if `IGNORE NULLS` is set) of the window frame. |
| **Return Type** | Same type as `expr` |
| **Example** | `last_value(column)` |