snapshot of https://github.com/TanStack/query.git (main, 2026-09-16; blobs > 131072B omitted)

docs/framework/solid/reference/interfaces/QueryState.md

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+---
+id: QueryState
+title: QueryState
+---
+
+Defined in: [packages/query-core/src/query.ts:52](https://github.com/TanStack/query/blob/main/packages/query-core/src/query.ts#L52)
+
+The raw state stored on a `Query` instance. This is the underlying state
+that observer results (e.g. `QueryObserverResult`) are derived from.
+
+## Type Parameters
+
+### TData
+
+`TData` = `unknown`
+
+### TError
+
+`TError` = [`DefaultError`](../type-aliases/DefaultError.md)
+
+## Properties
+
+### data
+
+```ts
+data: TData | undefined;
+```
+
+Defined in: [packages/query-core/src/query.ts:56](https://github.com/TanStack/query/blob/main/packages/query-core/src/query.ts#L56)
+
+The last successfully resolved data for the query.
+
+***
+
+### dataUpdateCount
+
+```ts
+dataUpdateCount: number;
+```
+
+Defined in: [packages/query-core/src/query.ts:60](https://github.com/TanStack/query/blob/main/packages/query-core/src/query.ts#L60)
+
+The number of times the query has successfully resolved.
+
+***
+
+### dataUpdatedAt
+
+```ts
+dataUpdatedAt: number;
+```
+
+Defined in: [packages/query-core/src/query.ts:64](https://github.com/TanStack/query/blob/main/packages/query-core/src/query.ts#L64)
+
+The timestamp for when the query most recently returned the `status` as `"success"`.
+
+***
+
+### error
+
+```ts
+error: TError | null;
+```
+
+Defined in: [packages/query-core/src/query.ts:69](https://github.com/TanStack/query/blob/main/packages/query-core/src/query.ts#L69)
+
+The error object for the query, if the last attempt resulted in an error.
+- Defaults to `null`.
+
+***
+
+### errorUpdateCount
+
+```ts
+errorUpdateCount: number;
+```
+
+Defined in: [packages/query-core/src/query.ts:73](https://github.com/TanStack/query/blob/main/packages/query-core/src/query.ts#L73)
+
+The sum of all errors, incremented every time the query resolves with an error.
+
+***
+
+### errorUpdatedAt
+
+```ts
+errorUpdatedAt: number;
+```
+
+Defined in: [packages/query-core/src/query.ts:77](https://github.com/TanStack/query/blob/main/packages/query-core/src/query.ts#L77)
+
+The timestamp for when the query most recently returned the `status` as `"error"`.
+
+***
+
+### fetchFailureCount
+
+```ts
+fetchFailureCount: number;
+```
+
+Defined in: [packages/query-core/src/query.ts:83](https://github.com/TanStack/query/blob/main/packages/query-core/src/query.ts#L83)
+
+The failure count for the current fetch.
+- Incremented every time the fetch fails.
+- Reset to `0` when the fetch succeeds.
+
+***
+
+### fetchFailureReason
+
+```ts
+fetchFailureReason: TError | null;
+```
+
+Defined in: [packages/query-core/src/query.ts:88](https://github.com/TanStack/query/blob/main/packages/query-core/src/query.ts#L88)
+
+The reason the current fetch failed, as reported by the retryer.
+- Reset to `null` when the fetch succeeds.
+
+***
+
+### fetchMeta
+
+```ts
+fetchMeta: FetchMeta | null;
+```
+
+Defined in: [packages/query-core/src/query.ts:93](https://github.com/TanStack/query/blob/main/packages/query-core/src/query.ts#L93)
+
+Metadata passed to the currently in-flight (or most recent) fetch, e.g. the
+`fetchMore` direction for infinite queries.
+
+***
+
+### fetchStatus
+
+```ts
+fetchStatus: FetchStatus;
+```
+
+Defined in: [packages/query-core/src/query.ts:112](https://github.com/TanStack/query/blob/main/packages/query-core/src/query.ts#L112)
+
+The fetch status of the query.
+- `fetching`: the `queryFn` is currently executing.
+- `paused`: a fetch wanted to run but has been paused (see network mode).
+- `idle`: the query is not fetching.
+
+***
+
+### isInvalidated
+
+```ts
+isInvalidated: boolean;
+```
+
+Defined in: [packages/query-core/src/query.ts:98](https://github.com/TanStack/query/blob/main/packages/query-core/src/query.ts#L98)
+
+Whether the query has been marked as invalidated via `invalidate()`.
+- Reset to `false` whenever the query resolves successfully.
+
+***
+
+### status
+
+```ts
+status: QueryStatus;
+```
+
+Defined in: [packages/query-core/src/query.ts:105](https://github.com/TanStack/query/blob/main/packages/query-core/src/query.ts#L105)
+
+The status of the query.
+- `pending` if there's no cached data and no attempt was finished yet.
+- `error` if the last attempt resulted in an error.
+- `success` if the query has data.