Map values

Supported in: Batch, Streaming

Map a set of values in a column to new values.

Expression categories: Data preparation

Declared arguments

• Default - This value is chosen if values are not mapped by the value map.
  Expression<T2>
• Input - Values to be mapped.
  Expression<T1>
• Value map - Values to be mapped.
  Expression<Map<T1, T2>>

Type variable bounds: T1 accepts ComparableType**T2 accepts AnyType

Output type: T2

Examples

Example 1: Base case

Argument values:

• Default: null
• Input: country
• Value map: {
   Denmark -> DNK,
   United Kingdom -> UK,
  }

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Example 2: Base case

Argument values:

• Default: country
• Input: country
• Value map: {
   Denmark -> DNK,
   United Kingdom -> null,
  }

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