[JBoss JIRA] Created: (TEIID-1329) API to force metadata read
by Mark Addleman (JIRA)
API to force metadata read
--------------------------
Key: TEIID-1329
URL: https://jira.jboss.org/browse/TEIID-1329
Project: Teiid
Issue Type: Feature Request
Components: AdminApi
Affects Versions: 7.1
Reporter: Mark Addleman
Assignee: Steven Hawkins
Priority: Minor
We have a dynamic set of datasources that are accessed through Teiid. Each data source is represented as a different model within the VDB. Some data sources may not be available at the time Teiid executes the translator's getMetadata() method. When our code detects the data source is available, I'd like to poke Teiid to re-read the appropriate translator's metadata.
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14 years, 11 months
[JBoss JIRA] Created: (TEIID-1376) Add support for pushing joins through a union
by Steven Hawkins (JIRA)
Add support for pushing joins through a union
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Key: TEIID-1376
URL: https://jira.jboss.org/browse/TEIID-1376
Project: Teiid
Issue Type: Feature Request
Components: Query Engine
Affects Versions: 7.2
Reporter: Steven Hawkins
Assignee: Steven Hawkins
Fix For: 7.3
Given a query structure such as:
inner join
union all
a
b
union all
c
d
where a,b,c,d are access nodes to a source that supports joins and there is a constant column projected by each union branch and that column is used in the join predicates, then we should be able examine
union all
inner join
a
b
inner join
a
c
...
to determine if any of the joins will no longer be necessary.
This is a possible pattern in a multi-source or partitioning scenario.
In some scenarios there may not be an actual projected literal, which could be accommodated if a foreign key could be marked as partitioned.
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14 years, 11 months