# Arrays zip

> Supported in: Batch, Faster, Streaming

Zips a list of given arrays into a merged array of structs in which the n-th struct contains all n-th values of input arrays.

**Expression categories:** Array

## Declared arguments

* **Expressions:** A list of arrays to zip.<br>*List\<Expression\<Array\<AnyType>>>*

**Output type:** *Array\<Struct>*

## Examples

### Example 1: Base case

**Argument values:**

* **Expressions:** \[`a1`, `a2`]

| a1 | a2 | **Output** |
| ----- | ----- | ----- |
| \[ 1, 2, 3 ] | \[ 4, 5, 6 ] | \[ {<br> **a1**: 1,<br> **a2**: 4,<br>}, {<br> **a1**: 2,<br> **a2**: 5,<br>}, {<br> **a1**: 3,<br> **a2**: 6,<br>} ] |

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### Example 2: Null case (ANSI mode on)

**Argument values:**

* **Expressions:** \[`a1`, `a2`]

| a1 | a2 | **Output** |
| ----- | ----- | ----- |
| \[ 1, 2, 3 ] | \[ 4, 5, 6 ] | \[ {<br> **a1**: 1,<br> **a2**: 4,<br>}, {<br> **a1**: 2,<br> **a2**: 5,<br>}, {<br> **a1**: 3,<br> **a2**: 6,<br>} ] |
| \[ 1, 2, 3 ] | *null* | *null* |
| *null* | *null* | *null* |
| \[  ] | \[  ] | \[  ] |

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### Example 3: Null case (ANSI mode off)

**Argument values:**

* **Expressions:** \[`a1`, `a2`]

| a1 | a2 | **Output** |
| ----- | ----- | ----- |
| \[ 1, 2, 3 ] | *null* | \[ {<br> **a1**: 1,<br> **a2**: *null*,<br>}, {<br> **a1**: 2,<br> **a2**: *null*,<br>}, {<br> **a1**: 3,<br> **a2**: *null*,<br>} ] |
| *null* | *null* | \[  ] |
| \[  ] | \[  ] | \[  ] |

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### Example 4: Edge case

**Description:** Longest length array is used.

**Argument values:**

* **Expressions:** \[`a1`, `a2`]

| a1 | a2 | **Output** |
| ----- | ----- | ----- |
| \[ 1, 2, 3 ] | \[ 4, 5 ] | \[ {<br> **a1**: 1,<br> **a2**: 4,<br>}, {<br> **a1**: 2,<br> **a2**: 5,<br>}, {<br> **a1**: 3,<br> **a2**: *null*,<br>} ] |

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