Created
October 7, 2022 14:49
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medium_mongodb_performance_merge
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| db.holdings.aggregate([ | |
| { | |
| $group: { | |
| _id: '$portfolio', | |
| assetIdentifiers: { | |
| $addToSet: '$asset.identifier', | |
| }, | |
| }, | |
| }, | |
| { | |
| $merge: { | |
| into: 'portfolio_assets', | |
| whenMatched: 'replace', | |
| }, | |
| }, | |
| ]) |
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