Map Values
The Map Values component replaces one value with another in the dataset based on a specified condition.
As the data is passed through the component, rules are applied to specified columns to replace one value with another. Like the Fixed Flow component, this can be used to introduce mappings into the data; for example, mapping a non-descriptive code to a more human-readable name.
Properties
Name = string
A human-readable name for the component.
Value Map = column editor
- Input Column: The name of the column output from the previous component used for comparison.
- Qualifier: Can be either Is, or Not; used to invert the filter if required.
- Comparator: Select the comparator.
- Less than: The value in the Input Column must be less than the value specified in the Comparison Value Column.
- Less than or equal to: The value in the Input Column must be less than or equal to the value specified in the Comparison Value Column.
- Equal to: The value in the Input Column must be equal to the value specified in the Comparison Value Column.
- Greater than: The value in the Input Column must be greater than the value specified in the Comparison Value Column.
- Greater than or equal to: The value in the Input Column must be greater than or equal to the value specified in the Comparison Value Column.
- Like: Sets a case-sensitive match of the value in the Input Column and the pattern in the Comparison Value Column.
- ILike: Sets a case-insensitive match of the value in the Input Column and the pattern in the Comparison Value Column. (Not available for Delta Lake on Databricks.)
- Similar to: Matches the value in the Input Column with an SQL standard regular expression pattern in the Comparison Value column.
- Null: Checks whether the value of the Input Column is the SQL null value.
- Blank: Checks whether the value of the Input Column is an empty string.
- Null or blank: Checks whether the value of the Input Column is either the SQL null value or an empty string.
- Comparison Value: A value entered by the user for comparison.
- Then Value: A value entered by the user that will be added to the data when the comparison is matched.
Other = string
A value entered by the user when none of the conditions are matched. Setting this value to "" will return an empty string.
Column Name = string
The name of the output field that will be passed to subsequent components.
Strategy
Generates a SELECT statement with a CASE statement in-line.
| Snowflake | Delta Lake on Databricks | Amazon Redshift | Google BigQuery | Azure Synapse Analytics |
|---|---|---|---|---|
| ✅ | ✅ | ✅ | ❌ | ✅ |