[JBoss JIRA] Created: (TEIID-1421) Support better scrolling of cached results
by Steven Hawkins (JIRA)
Support better scrolling of cached results
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Key: TEIID-1421
URL: https://issues.jboss.org/browse/TEIID-1421
Project: Teiid
Issue Type: Feature Request
Components: JDBC Driver
Reporter: Steven Hawkins
Assignee: Steven Hawkins
Fix For: 7.3
Cached result sets already have their final row known. The client should be able to use this for more effective scrolling of the results, rather than relying on a linear scan.
Once fixed users should be able to take advantage of this by creating a resultset that is scroll insensitive and then using the absolute method to position the cursor at the desired offset in the results. Only the first batch and the actual batch(es) needed will be fetched and the intermediate batches will be skipped.
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13 years, 8 months
[JBoss JIRA] Created: (TEIID-1281) DB2 substring index bounds are different than teiid
by Steven Hawkins (JIRA)
DB2 substring index bounds are different than teiid
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Key: TEIID-1281
URL: https://jira.jboss.org/browse/TEIID-1281
Project: Teiid
Issue Type: Quality Risk
Components: Misc. Connectors
Affects Versions: 7.0
Reporter: Steven Hawkins
Assignee: Steven Hawkins
Priority: Minor
Fix For: 7.3
DB2/Derby do not allow the start argument to be negative or be greater than or equal to the length. The length parameter cannot be negative (Teiid returns null), and it plus the start cannot exceed the string length.
In general we are inconsistent with our handling of negative string indexing. For example the locate function. We should look at making this more consistent in Teiid 8.
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13 years, 8 months