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Implement pushdown for aggregate for PostgreSQL #3607

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merged 10 commits into from
Oct 23, 2023
Merged

Implement pushdown for aggregate for PostgreSQL #3607

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wip
noisersup Oct 18, 2023
44e5645
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noisersup Oct 18, 2023
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noisersup Oct 18, 2023
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Merge remote-tracking branch 'upstream/main' into aggregation-pushdow…
noisersup Oct 18, 2023
b34bf88
wip
noisersup Oct 19, 2023
100e9c3
Merge remote-tracking branch 'upstream/main' into aggregation-pushdow…
noisersup Oct 19, 2023
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wip
noisersup Oct 19, 2023
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noisersup Oct 20, 2023
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noisersup Oct 20, 2023
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Merge branch 'main' into aggregation-pushdown-sqlite-3520
AlekSi Oct 23, 2023
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@noisersup
noisersup committed Oct 19, 2023
commit 883975c62a2b0be267f32596e892ade93ecff1f5
22 changes: 18 additions & 4 deletions internal/handlers/sqlite/msg_aggregate.go
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Original file line number Diff line number Diff line change
Expand Up @@ -259,7 +259,7 @@
var iter iterator.Interface[struct{}, *types.Document]

if len(collStatsDocuments) == len(stagesDocuments) {
filter, _ := aggregations.GetPushdownQuery(aggregationStages)
filter, sort := aggregations.GetPushdownQuery(aggregationStages)

// only documents stages or no stages - fetch documents from the DB and apply stages to them
qp := new(backends.QueryParams)
Expand All @@ -268,9 +268,23 @@
qp.Filter = filter
}

//if h.EnableSortPushdown {
// qp.Sort = sort
//}
// Skip sorting if there are more than one sort parameters
if h.EnableSortPushdown && sort.Len() == 1 {
var order types.SortType

k := sort.Keys()[0]
v := sort.Values()[0]

order, err = common.GetSortType(k, v)
if err != nil {
return nil, err
}

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qp.Sort = &backends.SortField{
Key: k,
Descending: order == types.Descending,
}

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}

iter, err = processStagesDocuments(ctx, closer, &stagesDocumentsParams{c, qp, stagesDocuments})
} else {
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