# mean — DuckDB 1.4.4

Calculates the average value for all tuples in x.

- Reference: /products/haybarn/functions/releases/duckdb-1.4.4/mean/
- JSON: /products/haybarn/functions/api/v1/duckdb-1.4.4/functions/mean.json
- Snapshot ID: duckdb-1.4.4
- Engine: duckdb v1.4.4
- Source ID: 6ddac802ff
- Binary SHA-256: 8d05bee013ea13d6b5d75272d7ddb52b3d6d9cdaf30d1a3e8e82d42757905182
- Captured: 2026-09-05T18:37:36.091Z
- Source: https://github.com/duckdb/duckdb/releases/tag/v1.4.4
- Loaded extensions: autocomplete, core_functions, icu, json, parquet, shell
- Alias of: avg

## Interpretation

- Choose a snapshot matching the target engine and build. The default is captured from the published Haybarn WASM package used by the browser playground. Historical native snapshots are also available.
- Availability is an observation in the recorded build and extension profile, not a guarantee of support in every installation or in WASM.
- Types and descriptions are declarations from duckdb_functions(). Binding can specialize result types. Null means not supplied by the catalog; do not invent defaults, optionality, argument mode, or table output columns.
- Raw parameter arrays preserve catalog order for scalar/aggregate/macro functions. Raw table arguments are alphabetical. Use callingConvention for engine-confirmed positional order and named arguments; null modes are unrecorded. Named does not mean optional. Macro defaults and special named variadic behavior are not supplied by duckdb_functions().
- Catalog examples are source material and may require data or extensions. runnableExamples contains separately verified SQL for the pinned WASM package; sample-data adaptations and guide examples are labeled separately.
- Guide annotations and recipes are separate editorial content. The browser runner always uses Haybarn WASM 1.5.5-rc3, independently of the documentation snapshot.
- All URLs beginning with / are relative to the origin hosting this document. Exports require no JavaScript, cookies, API key, or browser engine.

## Overloads

### overload-9be502d3cc809f75

Kind: aggregate. Parameter order: catalog-order.

```text
mean(x: BIGINT) → DOUBLE
```

Link: /products/haybarn/functions/releases/duckdb-1.4.4/mean/#overload-9be502d3cc809f75

| Argument | Catalog type | Calling mode |
| --- | --- | --- |
| x | BIGINT | not recorded |

Declared return type: DOUBLE. Variadic argument type: none declared.
Stability: CONSISTENT. Declared side effects: false.

### overload-f30acffb2f775166

Kind: aggregate. Parameter order: catalog-order.

```text
mean(x: DECIMAL) → DECIMAL
```

Link: /products/haybarn/functions/releases/duckdb-1.4.4/mean/#overload-f30acffb2f775166

| Argument | Catalog type | Calling mode |
| --- | --- | --- |
| x | DECIMAL | not recorded |

Declared return type: DECIMAL. Variadic argument type: none declared.
Stability: CONSISTENT. Declared side effects: false.

### overload-4b0da39ab9c750d7

Kind: aggregate. Parameter order: catalog-order.

```text
mean(x: DOUBLE) → DOUBLE
```

Link: /products/haybarn/functions/releases/duckdb-1.4.4/mean/#overload-4b0da39ab9c750d7

| Argument | Catalog type | Calling mode |
| --- | --- | --- |
| x | DOUBLE | not recorded |

Declared return type: DOUBLE. Variadic argument type: none declared.
Stability: CONSISTENT. Declared side effects: false.

### overload-a0e205c288005606

Kind: aggregate. Parameter order: catalog-order.

```text
mean(x: HUGEINT) → DOUBLE
```

Link: /products/haybarn/functions/releases/duckdb-1.4.4/mean/#overload-a0e205c288005606

| Argument | Catalog type | Calling mode |
| --- | --- | --- |
| x | HUGEINT | not recorded |

Declared return type: DOUBLE. Variadic argument type: none declared.
Stability: CONSISTENT. Declared side effects: false.

### overload-e9f871db0e42d2c5

Kind: aggregate. Parameter order: catalog-order.

```text
mean(x: INTEGER) → DOUBLE
```

Link: /products/haybarn/functions/releases/duckdb-1.4.4/mean/#overload-e9f871db0e42d2c5

| Argument | Catalog type | Calling mode |
| --- | --- | --- |
| x | INTEGER | not recorded |

Declared return type: DOUBLE. Variadic argument type: none declared.
Stability: CONSISTENT. Declared side effects: false.

### overload-dcc3e49aa375e327

Kind: aggregate. Parameter order: catalog-order.

```text
mean(x: INTERVAL) → INTERVAL
```

Link: /products/haybarn/functions/releases/duckdb-1.4.4/mean/#overload-dcc3e49aa375e327

| Argument | Catalog type | Calling mode |
| --- | --- | --- |
| x | INTERVAL | not recorded |

Declared return type: INTERVAL. Variadic argument type: none declared.
Stability: CONSISTENT. Declared side effects: false.

### overload-5d2411ff95547d25

Kind: aggregate. Parameter order: catalog-order.

```text
mean(x: SMALLINT) → DOUBLE
```

Link: /products/haybarn/functions/releases/duckdb-1.4.4/mean/#overload-5d2411ff95547d25

| Argument | Catalog type | Calling mode |
| --- | --- | --- |
| x | SMALLINT | not recorded |

Declared return type: DOUBLE. Variadic argument type: none declared.
Stability: CONSISTENT. Declared side effects: false.

### overload-d1ee97856ad4d601

Kind: aggregate. Parameter order: catalog-order.

```text
mean(x: TIME) → TIME
```

Link: /products/haybarn/functions/releases/duckdb-1.4.4/mean/#overload-d1ee97856ad4d601

| Argument | Catalog type | Calling mode |
| --- | --- | --- |
| x | TIME | not recorded |

Declared return type: TIME. Variadic argument type: none declared.
Stability: CONSISTENT. Declared side effects: false.

### overload-c358f04d4f8fafa4

Kind: aggregate. Parameter order: catalog-order.

```text
mean(x: TIME WITH TIME ZONE) → TIME WITH TIME ZONE
```

Link: /products/haybarn/functions/releases/duckdb-1.4.4/mean/#overload-c358f04d4f8fafa4

| Argument | Catalog type | Calling mode |
| --- | --- | --- |
| x | TIME WITH TIME ZONE | not recorded |

Declared return type: TIME WITH TIME ZONE. Variadic argument type: none declared.
Stability: CONSISTENT. Declared side effects: false.

### overload-5c3e4d308ce553c5

Kind: aggregate. Parameter order: catalog-order.

```text
mean(x: TIMESTAMP) → TIMESTAMP
```

Link: /products/haybarn/functions/releases/duckdb-1.4.4/mean/#overload-5c3e4d308ce553c5

| Argument | Catalog type | Calling mode |
| --- | --- | --- |
| x | TIMESTAMP | not recorded |

Declared return type: TIMESTAMP. Variadic argument type: none declared.
Stability: CONSISTENT. Declared side effects: false.

### overload-93325ca31cbf25b7

Kind: aggregate. Parameter order: catalog-order.

```text
mean(x: TIMESTAMP WITH TIME ZONE) → TIMESTAMP WITH TIME ZONE
```

Link: /products/haybarn/functions/releases/duckdb-1.4.4/mean/#overload-93325ca31cbf25b7

| Argument | Catalog type | Calling mode |
| --- | --- | --- |
| x | TIMESTAMP WITH TIME ZONE | not recorded |

Declared return type: TIMESTAMP WITH TIME ZONE. Variadic argument type: none declared.
Stability: CONSISTENT. Declared side effects: false.


## Guide recipes

No guide recipes.

## Engine catalog examples

Source examples may require additional data or extensions. Expressions are wrapped in SELECT; execution verification is not recorded.

Reported for: overload-9be502d3cc809f75, overload-f30acffb2f775166, overload-4b0da39ab9c750d7, overload-a0e205c288005606, overload-e9f871db0e42d2c5, overload-dcc3e49aa375e327, overload-5d2411ff95547d25, overload-d1ee97856ad4d601, overload-c358f04d4f8fafa4, overload-5c3e4d308ce553c5, overload-93325ca31cbf25b7

```sql
SELECT SUM(x) / COUNT(*);
```

## Runnable examples

Executed successfully in Haybarn WASM 1.5.5-rc3. Sample data and guide examples are separate from the original catalog.

```sql
SELECT SUM(x) / COUNT(*)
FROM (VALUES
  (10),
  (20),
  (NULL)
) AS sample("x");
```

## Additional DuckDB documentation

- [Aggregate Functions](https://duckdb.org/docs/current/sql/functions/aggregates)

## Observed availability

| Snapshot | Observed | Overloads | JSON |
| --- | --- | --- | --- |
| haybarn-1.5.5-rc3 | present | 11 | [reference](/products/haybarn/functions/api/v1/haybarn-1.5.5-rc3/functions/mean.json) |
| duckdb-1.5.5 | present | 11 | [reference](/products/haybarn/functions/api/v1/duckdb-1.5.5/functions/mean.json) |
| duckdb-1.4.4 | present | 11 | [reference](/products/haybarn/functions/api/v1/duckdb-1.4.4/functions/mean.json) |
| duckdb-1.3.2 | present | 11 | [reference](/products/haybarn/functions/api/v1/duckdb-1.3.2/functions/mean.json) |

Engine catalog documentation is derived from MIT-licensed Haybarn and DuckDB. [Notices](/third-party-notices.txt).