[CALCITE-1056] Simplify predicate of JOIN, and optimize away LIMIT 0 - ASF JIRA

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Details

Type: Bug
Status: Closed
Priority: Major
Resolution: Fixed
Affects Version/s: None
Fix Version/s: 1.7.0
Component/s: None
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Description

Following ~~CALCITE-996~~, RelBuilder should simplify predicates in other situations, such as the and method and the join method.

RelBuilder.filter(false) and RelBuilder.limit(0, 0) should simplify to RelBuilder.empty(), a new method that returns an empty relation. The default implementation returns a Values with no rows, but schema-on-query systems such as Drill might override the empty method.

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Assignee:: Julian Hyde

Reporter:: Julian Hyde

Votes:: 0 Vote for this issue

Watchers:: 1 Start watching this issue

Dates

Created:: 14/Jan/16 00:55

Updated:: 22/Mar/16 01:18

Resolved:: 22/Jan/16 07:40

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Simplify predicate of JOIN, and optimize away LIMIT 0