This functionality is in beta and is subject to change. The design and code is less mature than official GA features and is being provided as-is with no warranties. Beta features are not subject to the support SLA of official GA features.
These functions return metadata type of information about the system being queried.
Description: Returns the name of the database being queried. In the case of Elasticsearch SQL, this is the name of the Elasticsearch cluster. This function should always return a non-null value.
SELECT DATABASE(); DATABASE --------------- elasticsearch