[teiid-issues] [JBoss JIRA] (TEIID-4973) Couchbase - Teiid returns empty result if source query fails

[Juraj Duráni (JIRA)]

Juraj Duráni created TEIID-4973:
-----------------------------------

             Summary: Couchbase - Teiid returns empty result if source query fails
                 Key: TEIID-4973
                 URL: https://issues.jboss.org/browse/TEIID-4973
             Project: Teiid
          Issue Type: Bug
          Components: Misc. Connectors
            Reporter: Juraj Duráni
            Assignee: Steven Hawkins
            Priority: Blocker


Teiid does not provide any information to the user that query actually failed. Only empty result is returned.

Currently, issuing query like \[1\] produces source-specific query with syntax error \[2\] (result directly from Couchbase \[3\]). But Teiid returns empty result just like query succeeded with no rows. 

{code:sql|title=\[1\] Query}
SELECT BQT1.SmallA.FloatNum FROM BQT1.SmallA WHERE BQT1.SmallA.FloatNum = 7
{code}

{code:plain|title=\[2\] Source-specific query}
10:16:09,749 DEBUG [org.teiid.CONNECTOR] (Worker12_QueryProcessorQueue86) TEIID29001 Source-specific Query: SELECT TONUMBER(`$cb_c1_FloatNum`) FROM `dvqe_small` `$cb_t1` LET `$cb_c1_FloatNum` = `$cb_t1`.`FloatNum`TONUMBER() WHERE TONUMBER(`$cb_c1_FloatNum`) = 7.0 AND `$cb_t1`.`type` = 'SmallA'
{code}

{code:plain|title=\[3\] Couchbase result}
[
  {
    "code": 3000,
    "msg": "syntax error - at TONUMBER",
    "query_from_user": "SELECT TONUMBER(`$cb_c1_FloatNum`) FROM `dvqe_small` `$cb_t1` LET `$cb_c1_FloatNum` = `$cb_t1`.`FloatNum`TONUMBER() WHERE TONUMBER(`$cb_c1_FloatNum`) = 7.0 AND `$cb_t1`.`type` = 'SmallA'"
  }
]
{code}



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