[teiid-issues] [JBoss JIRA] Closed: (TEIID-345) Consolidate ifnull, nvl, and coalesce support

Consolidate ifnull, nvl, and coalesce support --------------------------------------------- Key: TEIID-345 URL: https://jira.jboss.org/jira/browse/TEIID-345 Project: Teiid Issue Type: Feature Request Components: Connector API, Query Engine Affects Versions: 6.0.0 Reporter: Steven Hawkins Assignee: Steven Hawkins Priority: Minor Fix For: 6.0.0 Original Estimate: 1 day Remaining Estimate: 1 day We should use ifnull to represent the 2 arg function form and coalesce to represent the n arg (not available until var arg support). The rewriter should rewrite nvl as ifnull and connectors should express support for ifnull and coalesce only.