# MV_APPEND

Concatenates the values of two multi-value fields into a single field.

## Syntax

`MV_APPEND(field1, field2)`

### Parameters

#### `field1`

The first multi-value field to concatenate.

#### `field2`

The second multi-value field to concatenate.

## Examples

```esql
ROW a = ["foo", "bar"], b = ["baz", "qux"]
| EVAL c = MV_APPEND(a, b)
| KEEP a, b, c
```

```esql
ROW x = [1, 2, 3], y = [4, 5, 6]
| EVAL z = MV_APPEND(x, y)
| KEEP x, y, z
```

## Limitations

No specific limitations are mentioned in the source documentation.
