[teiid-issues] [JBoss JIRA] (TEIID-3129) Limit is not added with multiple nulls in select on outer query to an inline view

[Sanjeev Gour (JIRA)]

Sanjeev Gour created TEIID-3129:
-----------------------------------

             Summary: Limit is not added with multiple nulls in select on outer query to an inline view
                 Key: TEIID-3129
                 URL: https://issues.jboss.org/browse/TEIID-3129
             Project: Teiid
          Issue Type: Bug
          Components: Query Engine
    Affects Versions: 8.9
            Reporter: Sanjeev Gour
            Assignee: Steven Hawkins


When a query does multiple null selects in the in the outer query to an inline view and you only have a DISTINCT constant selected from the view definition, a limit 1 is expected to be applied to the inline view query which does not happen. Here is the sample query-

SELECT DISTINCT c1, null as c2, null as c3 FROM(
    SELECT c1, c2 FROM (
        SELECT 'const_col_1' as c1, ID as c2 FROM FIRST_SCHEMA.FIRST_TABLE
        UNION ALL
        SELECT 'const_col_2' as c1, ID as c2 FROM SECOND_SCHEMA.SECOND_TABLE
    ) as v
) as v1

The query will contain queries to the inline view without a limit like the following-
SELECT 'const_col_1' FROM h2extended.TEST.FIRST_SCHEMA.FIRST_TABLE AS g_0 -------------------LIMIT 1 is not applied here

Full query plan and the detail are capture in this discussion-
https://developer.jboss.org/thread/248787




--
This message was sent by Atlassian JIRA
(v6.3.1#6329)