# Merge - Workflow node | Docs - nodulz

Source: https://nodulz.com/docs/nodes/merge

Language: en

Merge data from multiple streams

## Usage and specifics

Mode selects append, combine by key, SQL query or branch selection. sourceA and sourceB are distinct; keyField is needed to combine matching records.

Technical type : `merge`. Runtime : `nodulz`.

## Credentials and prerequisites

This node defines no dedicated external credential. Remote sources or execution targets may still need their own access credentials.

See the [credentials guide](/docs/credentials) if a remote source or execution target requires access.

## Parameters

Names below are technical keys. Defaults are not a ready-to-run configuration: complete fields required by your operation. Paths containing [] describe list items; some fields depend on the selected mode.

| Parameter | Type | Default | Values / limits |
| --- | --- | --- | --- |
| `mode` | `enum` | `"append"` | `append`, `combine`, `sql_query`, `choose_branch` |
| `sourceA` | `string` | `""` | - |
| `sourceB` | `string` | `""` | - |
| `keyField` | `string` | `"id"` | - |
| `sqlQuery` | `string` | `"SELECT * FROM input1"` | - |
| `branchIndex` | `number` | `0` | -; ≥ 0 |

## Initial configuration

Initial catalog configuration example, to adapt before running. Keep secrets in credentials.

```json
{
  "mode": "append",
  "sourceA": "",
  "sourceB": "",
  "keyField": "id",
  "sqlQuery": "SELECT * FROM input1",
  "branchIndex": 0
}
```

## Verification

Test with representative data. Check node output in the inspector and logs, then use editor mapping for downstream fields. A trigger test with a simulated payload does not validate external service delivery.

See also : [Expressions and data](/docs/expressions), [Executions](/docs/executions), [Node catalog](/docs/nodes).

## Explore further

- [Features - nodulz](https://nodulz.com/product/overview)
- [Node catalog - nodulz](https://nodulz.com/product/catalog)
- [MCP server - nodulz](https://nodulz.com/product/mcp)
- [Pricing - nodulz](https://nodulz.com/pricing)
- [Use cases and workflow automation - nodulz](https://nodulz.com/use-cases)
- [Choose what your workflows can do. - nodulz](https://nodulz.com/compare)
- [Documentation - nodulz](https://nodulz.com/docs)