[teiid-issues] [JBoss JIRA] (TEIID-2987) MongoDB: No rows are returned when a function is used in a where clause

[Filip Elias (JIRA)]

Filip Elias created TEIID-2987:
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             Summary: MongoDB: No rows are returned when a function is used in a where clause
                 Key: TEIID-2987
                 URL: https://issues.jboss.org/browse/TEIID-2987
             Project: Teiid
          Issue Type: Bug
          Components: Misc. Connectors
    Affects Versions: 8.4.1
         Environment: Teiid 8.4.1
            Reporter: Filip Elias
            Assignee: Ramesh Reddy


Teiid will return no rows when a function which is pushed down is used in a where clause.

These queries should return few rows, but the result is empty:

Query:
SELECT intkey, stringnum FROM BQT1.SmallA WHERE concat(stringkey, stringnum) = '7-17' ORDER BY intkey

Generated mongo command:
{aggregate: "smalla", pipeline: [ { $match: { _m0: "7-17" } }, { $project: { c_0: "$INTKEY", c_1: "$STRINGNUM" } }, { $sort: { c_0: 1 } } ] }

Query:
select intKey from bqt1.smalla where intKey+intKey >20

Generated mongo command:
{aggregate: "smalla", pipeline: [ { $match: { _m0: { $gt: 20 } } }, { $project: { _m1: "$INTKEY" } } ] }



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