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Document twap() designated-timestamp limitation #452

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Document twap() designated-timestamp limitation #452

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d9428ce
Document twap() designated-timestamp limitation
mtopolnik May 22, 2026
be8b951
Align wording between twap and sparkline
mtopolnik May 28, 2026
7e6c9bd
Merge branch 'main' into mt_update-twap
mtopolnik May 28, 2026
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9 changes: 6 additions & 3 deletions documentation/query/functions/aggregation.md
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Expand Up @@ -1659,9 +1659,12 @@ Supports `SAMPLE BY` with `FILL` modes.
#### Parameters

- `price` is any numeric value.
- `timestamp` is a `timestamp` value. This is typically the table's
[designated timestamp](/docs/concepts/designated-timestamp/) but can be any
timestamp column.
- `timestamp` must be the table's
[designated timestamp](/docs/concepts/designated-timestamp/), and the base
query must deliver rows in ascending designated-timestamp order. As a
current limitation, `twap()` rejects a query that passes any other
timestamp column or expression, or a base scan that compiles to a backward
scan (for example, an inner `ORDER BY ts DESC LIMIT N`).

#### Return value

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6 changes: 6 additions & 0 deletions documentation/query/functions/visualization.md
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Expand Up @@ -241,6 +241,12 @@ When explicit `min`/`max` are provided, out-of-range values are clamped:
`FILL(NULL)`, `FILL(NONE)`, and `FILL(PREV)`. `FILL(LINEAR)` and
`FILL(value)` are not supported.

- **Ascending designated-timestamp scan required.** The base query must
deliver rows in ascending designated-timestamp order. As a current
limitation, `sparkline` rejects a base scan that compiles to a backward
scan (for example, an inner `ORDER BY ts DESC LIMIT N` on the
[designated timestamp](/docs/concepts/designated-timestamp/)).

#### See also

- [bar](#bar) - Scalar horizontal bar
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