EXAMPLE - Extract Keys From Objects
You can extract the keys from an Object column into an Array of String values.
Functions:
Item | Description |
|---|---|
KEYS Function | Extracts the key values from an Object data type column and stores them in an array of String values. |
Source:
The following dataset contains configuration blocks for individual features, each of which has a different configuration. These example blocks are of Object type.
提示
In the following example configuration, the keys are the values on the left (e.g. enabled, maxRows, and maxCols), while the values for those keys are on the right side.
Code formatting has been applied to the Object data to improve legibility.
FeatureName | Configuration |
|---|---|
Whiz Widget | {
"enabled": "true",
"maxRows": "1000",
"maxCols": "100"
} |
Magic Button | {
"enabled": "false",
"startDirectory": "/home",
"maxDepth": "15"
} |
Happy Path Finder | {
"enabled": "true"
} |
Transformation:
The following transformation extracts the keys from the Object data in the Configuration column.
Transformation Name | |
|---|---|
Parameter: Formula type | Single row formula |
Parameter: Formula | keys(Configuration) |
Parameter: New column name | 'keys_Configuration' |
Results:
The keys_Configuration column contains the arrays of the key values.
FeatureName | Configuration | keys_Configuration |
|---|---|---|
Whiz Widget | {
"enabled": "true",
"maxRows": "1000",
"maxCols": "100"
} | ["enabled","maxRows","maxCols"] |
Magic Button | {
"enabled": "false",
"startDirectory": "/home",
"maxDepth": "15"
} | ["enabled","startDirectory","maxDepth"] |
Happy Path Finder | {
"enabled": "true"
} | ["enabled"] |