Query Execution
Warning
SingleStore 9.0 gives you the opportunity to preview, evaluate, and provide feedback on new and upcoming features prior to their general availability. In the interim, SingleStore 8.9 is recommended for production workloads, which can later be upgraded to SingleStore 9.0.
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Improved Workload Management implementation that no longer needs to be tuned via the
workload_
engine variable; this variable is now deprecated.management_ expected_ aggregators -
Support for multi-statement transactions that use distributed joins.
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Support for multi-statement transactions that write to a database and then read from a different database.
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Added a session variable
node_
that specifies the number of threads per node to use for columnstore table scans.degree_ of_ parallelism -
Queries that use the
IN
filter on shard keys now perform better. -
Hash joins that use reference tables now perform better.
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The
data_
engine variable can now be set toconversion_ compatibility_ level 7.
.0 This allows errors to be thrown for more invalid type conversions, instead of doing implicit type conversions, where the user could see unexpected results. -
Now, a maximum of 1024 tables can be written to in a transaction.
Last modified: April 24, 2021