Query Options

This document contains all the available query options

Supported Query Options

Key	Description	Default Behavior
timeoutMs	Timeout of the query in milliseconds	Use table/broker level timeout
enableNullHandling	Enable the null handling of the query (introduced in 0.11.0)	false (disabled)
explainPlanVerbose	Return verbose result for EXPLAIN query (introduced in 0.11.0)	false (not verbose)
useMultistageEngine	Use multi-stage engine to execute the query (introduced in 0.11.0)	false (use single-stage engine)
maxExecutionThreads	Maximum threads to use to execute the query. Useful to limit the resource usage for expensive queries	Half of the CPU cores for non-group-by queries; all CPU cores for group-by queries
numReplicaGroupsToQuery	When replica-group based routing is enabled, use it to query multiple replica-groups (introduced in 0.11.0)	1 (only query servers within the same replica-group)
minSegmentGroupTrimSize	Minimum groups to keep when trimming groups at the segment level for group-by queries. See Configuration Parameters	Server level config
minServerGroupTrimSize	Minimum groups to keep when trimming groups at the server level for group-by queries. See Configuration Parameters	Server level config
skipUpsert	For upsert-enabled table, skip the effect of upsert and query all the records. See Stream Ingestion with Upsert	false (exclude the replaced records)
useStarTree	Useful to debug the star-tree index (introduced in 0.11.0)	true (use star-tree if available)
AndScanReordering	See detailed description	disabled

Set Query Options

Before release 0.11.0

Before release 0.11.0, query options can be appended to the query with the OPTION keyword:

SELECT * FROM myTable OPTION(key1=value1, key2=123)
SELECT * FROM myTable OPTION(key1=value1) OPTION(key2=123)
SELECT * FROM myTable OPTION(timeoutMs=30000)

After release 0.11.0

After release 0.11.0, query options can be set using the SET statement:

SET key1 = 'value1';
SET key2 = 123;
SELECT * FROM myTable