Dana Groce danared
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| { | |
| "_id": 1995, | |
| "higestPrice": 1000000, | |
| "lowestPrice": 12000, | |
| "averagePrice": 114059, | |
| "priceStdDev": 81540 | |
| }, | |
| ... |
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| db.homeSales.aggregate([ | |
| { | |
| $group: | |
| { | |
| _id: {$year: "$date"}, | |
| higestPrice: {$max: "$amount"}, | |
| lowestPrice: {$min: "$amount"}, | |
| averagePrice: {$avg: "$amount"}, | |
| priceStdDev: {$stdDevPop: "$amount"} | |
| } |
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| { | |
| "_id": 1995, | |
| "higestPrice": 1000000, | |
| "lowestPrice": 12000, | |
| "averagePrice": 114059.35206869633, | |
| "priceStdDev": 81540.50490801703 | |
| }, | |
| ... |
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| db.homeSales.aggregate([ | |
| { | |
| $group: | |
| { | |
| _id: {$year: "$date"}, | |
| higestPrice: {$max: "$amount"}, | |
| lowestPrice: {$min: "$amount"}, | |
| averagePrice: {$avg: "$amount"}, | |
| priceStdDev: {$stdDevPop: "$amount"} | |
| } |
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| { | |
| "address": { | |
| "nameOrNumber": "2 - 3", | |
| "street": "THE SWITCHBACK", | |
| "town": "MAIDENHEAD", | |
| "county": "WINDSOR AND MAIDENHEAD", | |
| "postcode": "SL6 7RJ" | |
| }, | |
| "saleDate": ISODate("1999-03-15T00:00:00Z"), | |
| "price": 5425000, |
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| db.homeSales.aggregate([ | |
| {$match: { | |
| amount: {$gte:3000000}} | |
| }, | |
| {$lookup: { | |
| from: "postcodes", | |
| localField: "address.postcode", | |
| foreignField: "postcode", | |
| as: "postcode_docs"} | |
| }, |
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| { | |
| { | |
| "_id": ObjectId("56005dda80c3678b19799e52"), | |
| "amount": 3000000, | |
| "date": ISODate("2012-04-19T00:00:00Z"), | |
| "address": { | |
| "nameOrNumber": "TEMPLE FERRY PLACE", | |
| "street": "MILL LANE", | |
| "town": "MAIDENHEAD", | |
| "county": "WINDSOR AND MAIDENHEAD", |
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| db.homeSales.aggregate([ | |
| {$match: { | |
| amount: {$gte:3000000}} | |
| }, | |
| {$lookup: { | |
| from: "postcodes", | |
| localField: "address.postcode", | |
| foreignField: "postcode", | |
| as: "postcode_docs"} | |
| } |
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| { | |
| { | |
| "_id": ObjectId("56005dda80c3678b19799e52"), | |
| "amount": 3000000, | |
| "date": ISODate("2012-04-19T00:00:00Z"), | |
| "address": { | |
| "nameOrNumber": "TEMPLE FERRY PLACE", | |
| "street": "MILL LANE", | |
| "town": "MAIDENHEAD", | |
| "county": "WINDSOR AND MAIDENHEAD", |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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| db.homeSales.aggregate([ | |
| {$match: { | |
| amount: {$gte:3000000}} | |
| } | |
| ]) |