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| 1 | +enter mongo shell and create transactions db: |
| 2 | + |
| 3 | +``` |
| 4 | +$ mongo |
| 5 | +> use transactions |
| 6 | +``` |
| 7 | + |
| 8 | +Create a function to generate random data: |
| 9 | + |
| 10 | +``` |
| 11 | +> var txs = [] |
| 12 | +> for (var x = 0; x < 1000 ; x++) { |
| 13 | + var transaction_types = ["credit card", "cash", "account"]; |
| 14 | + var store_names = ["edgards", "cna", "makro", "picknpay", "checkers"]; |
| 15 | + var random_transaction_type = Math.floor(Math.random() * (2 - 0 + 1)) + 0; |
| 16 | + var random_store_name = Math.floor(Math.random() * (4 - 0 + 1)) + 0; |
| 17 | + txs.push({ |
| 18 | + transaction: 'tx_' + x, |
| 19 | + transaction_price: Math.round(Math.random()*1000), |
| 20 | + transaction_type: transaction_types[random_transaction_type], |
| 21 | + store_name: store_names[random_store_name] |
| 22 | + }); |
| 23 | + } |
| 24 | +``` |
| 25 | + |
| 26 | +Write the data to a collection: |
| 27 | + |
| 28 | +``` |
| 29 | +> db.purchases.insert(txs) |
| 30 | +BulkWriteResult({ |
| 31 | + "writeErrors" : [ ], |
| 32 | + "writeConcernErrors" : [ ], |
| 33 | + "nInserted" : 1000, |
| 34 | + "nUpserted" : 0, |
| 35 | + "nMatched" : 0, |
| 36 | + "nModified" : 0, |
| 37 | + "nRemoved" : 0, |
| 38 | + "upserted" : [ ] |
| 39 | +}) |
| 40 | +``` |
| 41 | + |
| 42 | +Look at 10 documents: |
| 43 | + |
| 44 | +``` |
| 45 | +> db.purchases.find().limit(10) |
| 46 | +{ "_id" : ObjectId("5cb1a49d3e0a85b364fc4aff"), "transaction" : "tx_0", "transaction_price" : 412, "transaction_type" : "credit card", "store_name" : "edgards" } |
| 47 | +{ "_id" : ObjectId("5cb1a49d3e0a85b364fc4b00"), "transaction" : "tx_1", "transaction_price" : 738, "transaction_type" : "credit card", "store_name" : "edgards" } |
| 48 | +{ "_id" : ObjectId("5cb1a49d3e0a85b364fc4b01"), "transaction" : "tx_2", "transaction_price" : 925, "transaction_type" : "cash", "store_name" : "edgards" } |
| 49 | +{ "_id" : ObjectId("5cb1a49d3e0a85b364fc4b02"), "transaction" : "tx_3", "transaction_price" : 509, "transaction_type" : "cash", "store_name" : "cna" } |
| 50 | +{ "_id" : ObjectId("5cb1a49d3e0a85b364fc4b03"), "transaction" : "tx_4", "transaction_price" : 380, "transaction_type" : "account", "store_name" : "picknpay" } |
| 51 | +{ "_id" : ObjectId("5cb1a49d3e0a85b364fc4b04"), "transaction" : "tx_5", "transaction_price" : 158, "transaction_type" : "credit card", "store_name" : "cna" } |
| 52 | +{ "_id" : ObjectId("5cb1a49d3e0a85b364fc4b05"), "transaction" : "tx_6", "transaction_price" : 342, "transaction_type" : "cash", "store_name" : "edgards" } |
| 53 | +{ "_id" : ObjectId("5cb1a49d3e0a85b364fc4b06"), "transaction" : "tx_7", "transaction_price" : 832, "transaction_type" : "credit card", "store_name" : "picknpay" } |
| 54 | +{ "_id" : ObjectId("5cb1a49d3e0a85b364fc4b07"), "transaction" : "tx_8", "transaction_price" : 841, "transaction_type" : "cash", "store_name" : "picknpay" } |
| 55 | +{ "_id" : ObjectId("5cb1a49d3e0a85b364fc4b08"), "transaction" : "tx_9", "transaction_price" : 263, "transaction_type" : "cash", "store_name" : "checkers" } |
| 56 | +``` |
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