Merge Node

The merge node allows you to combine different execution paths from your pipeline into a single flow. Use a merge node when you want to consolidate multiple branches (typically coming from a condition node) back into a unified pipeline flow.

Node Inputs

1. Function: The strategy for merging multiple inputs

   1. Type: Dropdown

   2. Options:

      1. Pick First: Takes the first (by time) valid input from connected paths

      2. Join All: Combines all inputs into a list

2. Paths: The different input paths to be merged.

   1. Type: List of the selected type

   2. Each field represents a potential incoming path

   3. You can dynamically add or remove input paths using the "Add Path" button

Node Parameters

1. Type: The data type for inputs and outputs

   1. Type: Dropdown

   2. Available options correspond to standard data types (Text, Number, etc.)

Node Outputs

1. Output: The merged result

   1. Type: Depends on function selection

      1. Pick First: Single value of selected type

      2. Join All: List of values of selected type

   2. Example usage: {{merge_0.output}}

Considerations

• The merge node is typically used in conjunction with the condition node to combine different execution paths

• When using "Pick First", the output will be a single value of the selected type as it’ll pick the first available incoming value.

• When using "Join All", the output will be a list of values of the selected type as it’ll join all incoming values.

• All input paths must match the selected type in the Type dropdown

• Empty or skipped paths are handled gracefully by the node

Example

The below example shows a pipeline that processes customer data differently based on their status using a condition node, then merges the results:

1. Condition node checks customer status:

• Path 0: VIP customer processing

• Path 1: New customer processing

• Path else: Regular customer processing

1. Merge node combines the processing results:

• Type: Text

• Function: Join All

• Fields:

  • Path 1: {{vip_processing.output}}

  • Path 2: {{new_customer_processing.output}}

  • Path 3: {{regular_processing.output}}

The merge node collects all processing results into a single list that can be used by downstream nodes.

Example

In the below example, we have a condition node with two paths.

• If text_0 = hello, then path 0 will execute (which is false; text_0 = orange)

• If text_1 = apple, then path 1 will execute (which is true)

• Path 1 executes, and we merge both paths together before displaying the output. Path 1 is a text node that prints out text_1 (“apple”). Hence, the output is apple.