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Support _id aggregation operators for $group stage #3096

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merged 19 commits into from
Jul 26, 2023
+326 −112
Merged

Support _id aggregation operators for $group stage #3096

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Merge branch 'main' into aggregation-group-id-operators-2964
mergify[bot] Jul 26, 2023
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@noisersup
noisersup committed Jul 24, 2023
commit 91e489c852f4bf23cac4230962fb95fdfa9afb46
12 changes: 12 additions & 0 deletions integration/aggregate_documents_compat_test.go
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Expand Up @@ -636,6 +636,18 @@ func TestAggregateCompatGroup(t *testing.T) {
bson.D{{"$sort", bson.D{{"_id", 1}}}},
},
},
"IDSumInvalid": {
pipeline: bson.A{
bson.D{{"$group", bson.D{{"_id", bson.D{{"$sum", "$"}}}}}},
},
resultType: emptyResult,
},
"IDSumRecursiveInvalid": {
pipeline: bson.A{
bson.D{{"$group", bson.D{{"_id", bson.D{{"$sum", bson.D{{"$sum", "$"}}}}}}}},
},
resultType: emptyResult,
},
}

testAggregateStagesCompat(t, testCases)
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4 changes: 0 additions & 4 deletions internal/handlers/common/aggregations/stages/group.go
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Expand Up @@ -174,10 +174,6 @@ func (g *group) Process(ctx context.Context, iter types.DocumentsIterator, close
func (g *group) groupDocuments(ctx context.Context, in []*types.Document) ([]groupedDocuments, error) {
switch groupKey := g.groupExpression.(type) {
case *types.Document:
if !operators.IsOperator(groupKey) {
break
}

op, err := operators.NewOperator(groupKey)
if err != nil {
return nil, err
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