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https://issues.apache.org/jira/browse/IGNITE-16085?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aleksey Plekhanov updated IGNITE-16085:
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Description:
Currently, we support only {{EQUALS}}, {{LESS_THAN}}, {{GREATER_THAN}},
{{GREATER_THAN_OR_EQUAL}}, {{LESS_THAN_OR_EQUAL}} conditions for index scans.
Our indexes also can be scanned for null values by design, but full table scan
now performed for {{IS NULL}} condition on indexed fields.
Perhaps {{IS NOT NULL}}, {{IS TRUE}}, {{IS FALSE}}, {{IS NOT TRUE}}, {{IS NOT
FALSE}} also can be used in index scan.
Also, {{SortedSegmentedIndex#find}} method have {{lowerIncl}} and {{upperIncl}}
parameters now, perhaps we can set it to {{false}} for {{LESS_THAN}} and
{{GREATER_THAN}} operators to more effective index scans.
was:Currently, we support only {{EQUALS}}, {{LESS_THAN}}, {{GREATER_THAN}},
{{GREATER_THAN_OR_EQUAL}}, {{LESS_THAN_OR_EQUAL}} conditions for index scans.
Our indexes also can be scanned for null values by design, but full table scan
now performed for {{IS NULL}} condition on indexed fields.
> Calcite engine. Index can't be used with IS NULL condition
> ----------------------------------------------------------
>
> Key: IGNITE-16085
> URL: https://issues.apache.org/jira/browse/IGNITE-16085
> Project: Ignite
> Issue Type: Improvement
> Reporter: Aleksey Plekhanov
> Priority: Major
> Labels: calcite2-required, calcite3-required
>
> Currently, we support only {{EQUALS}}, {{LESS_THAN}}, {{GREATER_THAN}},
> {{GREATER_THAN_OR_EQUAL}}, {{LESS_THAN_OR_EQUAL}} conditions for index scans.
> Our indexes also can be scanned for null values by design, but full table
> scan now performed for {{IS NULL}} condition on indexed fields.
> Perhaps {{IS NOT NULL}}, {{IS TRUE}}, {{IS FALSE}}, {{IS NOT TRUE}}, {{IS NOT
> FALSE}} also can be used in index scan.
> Also, {{SortedSegmentedIndex#find}} method have {{lowerIncl}} and
> {{upperIncl}} parameters now, perhaps we can set it to {{false}} for
> {{LESS_THAN}} and {{GREATER_THAN}} operators to more effective index scans.
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