Engine user query history

Use this reference to learn about the metadata available for historical queries in Firebolt.

The system table information_schema.engine_user_query_history is a view, which is a virtual table based on ENGINE_QUERY_HISTORY. It applies filters to only show queries that were made by actual users.

Queries generated by the system, such as those from connectors, drivers, or SDKs, are marked with the boolean HTTP header Firebolt-Machine-Query. These system queries can include actions such UI page loads or query progress updates. These queries do not appear in information_schema.engine_user_query_history, but are available in ENGINE_QUERY_HISTORY, which acts as a complete audit log.

SELECT
  *
FROM
  information_schema.engine_user_query_history
LIMIT
  100;

Columns in information_schema.engine_user_query_history

Each row contains columns with detailed information about each query in the history. This schema has the same structure and information as ENGINE_QUERY_HISTORY.

Column Name	Data Type	Description
account_name	TEXT	The name of the account that ran the query.
user_name	TEXT	The user name that was used to run the query. The user_name is present for account-level operations, and NULL for organization-level operations.
login_name	TEXT	The login name that was used to run the query. The login_name is present for organization-level statements, and otherwise NULL.
service_account_name	TEXT	The service account name that was used to run the query. The service_account_name is present for organization-level statements, and otherwise NULL.
submitted_time	TIMESTAMPTZ	The time that the user submitted the query.
start_time	TIMESTAMPTZ	The time that the query started running in Coordinated Universal Time (UTC).
end_time	TIMESTAMPTZ	The time that the query stopped running in UTC.
duration_us	BIGINT	The duration of query run time in microseconds.
e2e_duration_us	BIGINT	The end-to-end duration of query run time. Starting from the time the query was submitted and ending when the result was fully returned in microseconds.
status	TEXT	Can be one of the following values: STARTED_EXECUTION–Successful start of query execution. ENDED_SUCCESSFULLY–Successful end of query execution. CANCELED_EXECUTION–Query was canceled. PARSE_ERROR–Query could not be parsed. EXECUTION_ERROR–Query could not be executed successfully.
request_id	TEXT	The ID of the request from which the query originates.
query_id	TEXT	The unique identifier of the SQL query.
query_label	TEXT	A user-provided query label.
query_text	TEXT	The text of the SQL statement.
query_text_normalized	TEXT	The normalized text of the SQL statement.
query_text_normalized_hash	TEXT	The hash of the normalized text of the SQL statement.
telemetry	TEXT	Displays additional telemetry information about the query in JSON format. Currently, only SELECT queries and VACUUM jobs provide telemetry.
error_message	TEXT	The returned error message.
scanned_rows	BIGINT	The total number of rows scanned.
scanned_bytes	BIGINT	The total number of uncompressed bytes scanned.
scanned_cache_bytes	BIGINT	The total number of compressed bytes scanned from disk-based cache.
scanned_storage_bytes	BIGINT	The total number of compressed bytes scanned from Firebolt-managed storage. Does not apply to EXTERNAL tables.
inserted_rows	BIGINT	The total number of rows written.
inserted_bytes	BIGINT	The total number of bytes written to both cache and storage.
spilled_bytes	BIGINT	The total number of uncompressed bytes spilled.
peak_memory_bytes	BIGINT	Peak memory usage by the query. For distributed queries represents the peak memory used by any node.
returned_rows	BIGINT	The total number of rows returned from the query.
returned_bytes	BIGINT	The total number of bytes returned from the query.
time_in_queue_us	BIGINT	The number of microseconds the query spent in queue.
retries	BIGINT	The number of retried attempts in case of query failure. Defaults to 0.
node_ordinal	INTEGER	Index of the node in the cluster that has received the query and manages the execution of it. (1-indexed)
cluster_ordinal	INTEGER	Index of the cluster in the engine that has received the query and executes it. (1-indexed)
number_of_clusters	INTEGER	Number of cluster in the engine at the point of query execution.