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81 lines
2.7 KiB
Markdown
81 lines
2.7 KiB
Markdown
---
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slug: /en/sql-reference/window-functions/last_value
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sidebar_label: last_value
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sidebar_position: 4
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---
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# last_value
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Returns the last value evaluated within its ordered frame. By default, NULL arguments are skipped, however the `RESPECT NULLS` modifier can be used to override this behaviour.
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**Syntax**
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```sql
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last_value (column_name) [[RESPECT NULLS] | [IGNORE NULLS]]
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OVER ([[PARTITION BY grouping_column] [ORDER BY sorting_column]
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[ROWS or RANGE expression_to_bound_rows_withing_the_group]] | [window_name])
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FROM table_name
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WINDOW window_name as ([[PARTITION BY grouping_column] [ORDER BY sorting_column])
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```
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Alias: `anyLast`.
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:::note
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Using the optional modifier `RESPECT NULLS` after `first_value(column_name)` will ensure that `NULL` arguments are not skipped.
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See [NULL processing](../aggregate-functions/index.md/#null-processing) for more information.
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Alias: `lastValueRespectNulls`
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:::
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For more detail on window function syntax see: [Window Functions - Syntax](./index.md/#syntax).
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**Returned value**
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- The last value evaluated within its ordered frame.
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**Example**
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In this example the `last_value` function is used to find the lowest paid footballer from a fictional dataset of salaries of Premier League football players.
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Query:
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```sql
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DROP TABLE IF EXISTS salaries;
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CREATE TABLE salaries
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(
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`team` String,
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`player` String,
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`salary` UInt32,
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`position` String
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)
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Engine = Memory;
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INSERT INTO salaries FORMAT VALUES
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('Port Elizabeth Barbarians', 'Gary Chen', 196000, 'F'),
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('New Coreystad Archdukes', 'Charles Juarez', 190000, 'F'),
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('Port Elizabeth Barbarians', 'Michael Stanley', 100000, 'D'),
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('New Coreystad Archdukes', 'Scott Harrison', 180000, 'D'),
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('Port Elizabeth Barbarians', 'Robert George', 195000, 'M'),
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('South Hampton Seagulls', 'Douglas Benson', 150000, 'M'),
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('South Hampton Seagulls', 'James Henderson', 140000, 'M');
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```
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```sql
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SELECT player, salary,
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last_value(player) OVER (ORDER BY salary DESC RANGE BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) AS lowest_paid_player
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FROM salaries;
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```
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Result:
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```response
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┌─player──────────┬─salary─┬─lowest_paid_player─┐
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1. │ Gary Chen │ 196000 │ Michael Stanley │
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2. │ Robert George │ 195000 │ Michael Stanley │
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3. │ Charles Juarez │ 190000 │ Michael Stanley │
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4. │ Scott Harrison │ 180000 │ Michael Stanley │
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5. │ Douglas Benson │ 150000 │ Michael Stanley │
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6. │ James Henderson │ 140000 │ Michael Stanley │
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7. │ Michael Stanley │ 100000 │ Michael Stanley │
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└─────────────────┴────────┴────────────────────┘
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``` |