MAP_KEYS
Categories: Semistructured Data
MAP_KEYS
Returns all keys from a map expression.
Syntax
MAP_KEYS(input map) → array of strings
- input: A map expression for which to return an array of keys.
Examples
{{< codeheader "MAP_KEYS example" >}}
SELECT MAP_KEYS(properties)
-- ['Cover', 'Publication Year', 'Color']