SYS.HISTORY.AUTONOMOUS_REFLECTIONS

The sys.history.autonomous_reflections table contains the historical metadata for Autonomous Reflections.

Syntax

SELECT *
FROM sys.history.autonomous_reflections

Example Output

reflectionName	reflection_id	createdAt	reflectionType	enabled	operationSource	changeContent	datasetId	datasetName	operationType	autonomous	score	avgDailyAcceleratedCount	avgDailyImprovementInMs	avgImprovementFactor	benefitsScoreDesc	reason	viewSql	sqlType	beforeImage	key	datasetPath
AutoRef_Dataset_9a48f54a-d241-46cf-9e71-ae25642cf22c_aggregation	4390b0f5-0a0d-4b23-9a96-d9e9c5427baf	1748883691293	AGGREGATION	true	REST	"CREATE VIEW "__system_managed_views"."Dataset_9a48f54a-d241-46cf-9e71-ae25642cf22c" AS SELECT "NYC-taxi-trips-iceberg"."fare_amount" AS "F0[fare_amount]", "NYC-taxi-trips-iceberg"."passenger_count" AS "F1[passenger_count]"\nFROM "Samples"."samples.dremio.com"."NYC-taxi-trips-iceberg"\n ; ALTER DATASET "__system_managed_views"."Dataset_9a48f54a-d241-46cf-9e71-ae25642cf22c" CREATE AGGREGATE Reflection "agg_336b6cd6-9ade-4657-b685-4450c4dca951" USING DIMENSIONS ("F1[passenger_count]") MEASURES ("F0[fare_amount]" (SUM))	aa0b4932-e51d-4fed-93bf-e03b4a9b0a02	Dataset_9a48f54a-d241-46cf-9e71-ae25642cf22c	ADD	true	42.47425033306188	5.0	22366.980051424373	10.00000020692081	FAIR	CREATE autonomous Reflection in Autonomous Mode	CREATE autonomous Reflection in Autonomous Mode","viewSql":"CREATE VIEW "__system_managed_views"."Dataset_9a48f54a-d241-46cf-9e71-ae25642cf22c" AS SELECT "NYC-taxi-trips-iceberg"."fare_amount" AS "F0[fare_amount]", "NYC-taxi-trips-iceberg"."passenger_count" AS "F1[passenger_count]"\nFROM "Samples"."samples.dremio.com"."NYC-taxi-trips-iceberg"\n	CREATE_Reflection	false	4390b0f5-0a0d-4b23-9a96-d9e9c5427baf_CREATE_Reflection	["__system_managed_views","Dataset_9a48f54a-d241-46cf-9e71-ae25642cf22c"]
AutoRef_v1_raw	68bd2902-ad85-4793-ab6d-4f425b798775	1748883691257	RAW	true	REST	--Default Raw Reflection ; ALTER DATASET test.v1 CREATE RAW Reflection "raw_2311879c-79c4-4477-a1ed-6b4c999165bc" USING DISPLAY ("passenger_count", "EXPR$1")	8984be51-cd00-43f7-95e3-918eeabc51db	v1	ADD	true	42.47425033306188	5.0	22366.980051424373	10.00000020692081	FAIR	CREATE autonomous Reflection in Autonomous Mode	--Default Raw Reflection	CREATE_Reflection	false	68bd2902-ad85-4793-ab6d-4f425b798775_CREATE_Reflection	["test","v1"]

Columns

Column	Data Type	Description
reflectionName	varchar	Names the Autonomous Reflection.
reflection_id	varchar	Identifies the UUID of the Autonomous Reflection.
createdAt	timestamp	Represents the date and time (in UTC format) when the Autonomous Reflection was created.
reflectionType	varchar	Specifies the type of Autonomous Reflection. Enum: AGGREGATION, RAW
enabled	boolean	Indicates whether the Autonomous Reflection is currently enabled.
operationSource	varchar	Specifies the source of the operation. Enum: SQL, REST
changeContent	varchar	Displays content changes based on the value of operationSource. Shows a SQL statement when operationSource is SQL, and lists specific changes when the operationSource is REST.
datasetId	varchar	Identifies the ID of the dataset associated with the Autonomous Reflection.
datasetName	varchar	Identifies the name of the dataset associated with the Autonomous Reflection.
operationType	varchar	Specifies the type of operation performed. Enum: ADD, REMOVE
autonomous	boolean	Indicates whether the Reflection is autonomous.
score	double	Shows the score generated for the Autonomous Reflection.
avgDailyAcceleratedCount	double	Lists the average number of times per day the Autonomous Reflection is used to accelerate queries.
avgDailyImprovementInMs	double	Lists the average amount of time (in milliseconds) saved per day due to the Autonomous Reflection.
avgImprovementFactor	double	Measures how much faster affected queries run due to the Autonomous Reflection.
benefitsScoreDesc	varchar	Provides a qualitative description of the Autonomous Reflection's score. Enum: EMPTY, NEW, POOR, FAIR, GOOD
reason	varchar	Provides the rationale used by the Autonomous Reflection in making decisions.
viewSql	varchar	Identifies the SQL statement used to create the view associated with the Autonomous Reflection.
sqlType	varchar	Spectifies the type of SQL operation. Enum: CREATE_VIEW, DROP_VIEW, CREATE_REFLECTION, DROP_REFLECTION, DROP_TABLE, EXISTING_REFLECTION
beforeImage	boolean	Indicates whether the history record captures the object's state before the operation. For example, the beforeImage is false for a CREATE VIEW operation since the view doesn't exist yet. The beforeImage is true for a DROP TABLE operation, as the record reflects the table's state prior to deletion.
key	varchar	Identifies the key to the key-value store backing the sys.history.autonomous_reflections table. Typically formed by concatenating the reflectionId and sqlType. The key is unique to ensure history entries are not overwritten.
datasetPath	varchar	Shows the path to the dataset associated with the Autonomous Reflection.