[jira] [Updated] (ARROW-9771) [Rust] [DataFusion] Predicate Pushdown Improvement: treat predicates separated by AND separately

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-9771?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated ARROW-9771:
----------------------------------
    Labels: pull-request-available  (was: )

> [Rust] [DataFusion] Predicate Pushdown Improvement: treat predicates separated by AND separately
> ------------------------------------------------------------------------------------------------
>
>                 Key: ARROW-9771
>                 URL: https://issues.apache.org/jira/browse/ARROW-9771
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Rust, Rust - DataFusion
>            Reporter: Andrew Lamb
>            Priority: Minor
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> As discussed by [~jorgecarleitao] and [~houqp] here: https://github.com/apache/arrow/pull/7880#pullrequestreview-468057624
> If a predicate is a conjunction (aka AND'd) together, each of the clauses can be treated separately (e.g. a single filter expression {{A > 5 And B < 4}} can be broken up and each of {{A > 5}} and {{B < 4}} can be potentially pushed down different levels
> The filter pushdown logic works for the following case (when {{a}} and {{b}} are are separate selections, predicate for a is pushed below the {{Aggregate}} in the optimized plan):
> {code}
> ********Original plan:
> Selection: #b GtEq Int64(1)
>   Selection: #a LtEq Int64(1)
>     Aggregate: groupBy=[[#a]], aggr=[[MIN(#b)]]
>       TableScan: test projection=None
> ********Optimized plan:
> Selection: #b GtEq Int64(1)
>   Aggregate: groupBy=[[#a]], aggr=[[MIN(#b)]]
>     Selection: #a LtEq Int64(1)
>       TableScan: test projection=None
> {code}
> But not for this when {{a}} and {{b}} are {{AND}}'d together
> {code}
> ********Original plan:
> Selection: #a LtEq Int64(1) And #b GtEq Int64(1)
>   Aggregate: groupBy=[[#a]], aggr=[[MIN(#b)]]
>     TableScan: test projection=None
> ********Optimized plan:
> Selection: #a LtEq Int64(1) And #b GtEq Int64(1)
>   Aggregate: groupBy=[[#a]], aggr=[[MIN(#b)]]
>     TableScan: test projection=None
> {code}



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