Join array

Supported in: Batch, Streaming

Joins array with specified separator.

Expression categories: Array

Declared arguments

• Array to join - Array to join on.
  Expression<Array<String>>
• Separator - Separator to join array with.
  Expression<String>

Output type: String

Examples

Example 1: Base case

Argument values:

• Array to join: [ hello, world ]
• Separator: -

Output: hello-world

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Example 2: Base case

Argument values:

• Array to join: [ hello, world ]
• Separator:
  

Output: hello
world

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Example 3: Null case

Argument values:

• Array to join: array
• Separator: separator

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Example 4: Edge case

Argument values:

• Array to join: [ ]
• Separator: -

Output: empty string

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