[teiid-issues] [JBoss JIRA] (TEIID-2571) Generally allow must pushdown function evaluation
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https://issues.jboss.org/browse/TEIID-2571?page=com.atlassian.jira.plugin...
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Steven Hawkins resolved TEIID-2571.
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Resolution: Done
Added an initial implementation that is a simple / late evaluation of must pushdown
functions tied to a schema one at a time.
If this feature gets more use, then we'll want to address:
- multi-source support to select a single source to execute the function against
- grouping function calls together
TEIID-1131 now has a clearer implementation path as imported sequence functions will
function as expected as must pushdown functions
Generally allow must pushdown function evaluation
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Key: TEIID-2571
URL: https://issues.jboss.org/browse/TEIID-2571
Project: Teiid
Issue Type: Enhancement
Components: Connector API, Query Engine
Reporter: Steven Hawkins
Assignee: Steven Hawkins
Fix For: 8.5
A must pushdown function not associated with an access node will fail to evaluate. We
can initially improve upon this with translator that support "select without
from" to issue a scalar select of the value.
We can also enhance planning to group all such accesses to prevent multiple calls and to
determine a possible source target if the function is not associated with a source schema.
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