Iurii Gerzhedovich created IGNITE-23244:
-------------------------------------------
Summary: Sql. Provide information about PK to planner through
statistics
Key: IGNITE-23244
URL: https://issues.apache.org/jira/browse/IGNITE-23244
Project: Ignite
Issue Type: Improvement
Components: sql
Reporter: Iurii Gerzhedovich
IgniteStatistic doesn't implement two methods from the base Statistic interface:
{code:java}
boolean isKey(ImmutableBitSet columns)
List<ImmutableBitSet> getKeys(){code}
We can provide this information to help a planner make better planes.
Need just provide information about PK columns to the class and implementation
of the methods can be like a:
{code:java}
@Override
public boolean isKey(ImmutableBitSet columns) {
return columns.contains(pkColumns.get(0));
}
@Override
public List<ImmutableBitSet> getKeys() {
return pkColumns;
} {code}
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
