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https://issues.apache.org/jira/browse/CALCITE-7079?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17986780#comment-17986780
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Zhen Chen edited comment on CALCITE-7079 at 6/29/25 4:00 PM:
-------------------------------------------------------------

I wonder if it is possible to mix some other expressions, such as

{code:java}
xx and city = 'a'
xx and state <> 'a' and state <> 'b' 
xx or city = 'a'
xx or (state <> 'a' and state <> 'b')
xx and (state <> 'a' or state <> 'b')
{code}

Where xx represents the expression   city <> 'ABERDEEN' and city <> 'AIKEN'   
in the jira description



was (Author: jensen):
I wonder if it is possible to mix some other expressions, such as

{code:java}
xx and city = 'a'
xx and state <> 'a' and state <> 'b' 
xx or city = 'a'
xx or (state <> 'a' and state <> 'b')
{code}

Where xx represents the expression   city <> 'ABERDEEN' and city <> 'AIKEN'   
in the jira description


> Mongodb Adapter unable to translate multiple $ne condition conposed of "AND"
> ----------------------------------------------------------------------------
>
>                 Key: CALCITE-7079
>                 URL: https://issues.apache.org/jira/browse/CALCITE-7079
>             Project: Calcite
>          Issue Type: Bug
>            Reporter: zhaowang
>            Assignee: zhaowang
>            Priority: Major
>
> Mongodb adapter translate more than one $ne condition error.
> run sql:
> {code:java}
> select city, state from zips where city <> 'ABERDEEN' and city <> 
> 'AIKEN'{code}
> query plan:
> {code:java}
> {
>   "$match": {
>     "city": {
>       "$ne": "AIKEN"
>     }
>   }
> }, {$project: {CITY: '$city', STATE: '$state'}}{code}
> The condition (city <> 'ABERDEEN') lost,actually, more than one $ne condition 
> conpose of AND have to translate to $nin operation, such as:
> {code:java}
> {
>   "$match": {
>     "city": {
>       "$nin": [
>         "AIKEN",
>         "ABERDEEN"
>       ]
>     }
>   }
> }, {$project: {CITY: '$city', STATE: '$state'}} {code}
>  
>  



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