Query Options

This document contains all the available query options

Supported Query Options

KeyDescriptionDefault 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

Server level config

minServerGroupTrimSize

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

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

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