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| 1 | +.. _vsce-time-series: |
| 2 | + |
| 3 | +============================== |
| 4 | +Create Time Series Collections |
| 5 | +============================== |
| 6 | +.. default-domain:: mongodb |
| 7 | + |
| 8 | +.. contents:: On this page |
| 9 | + :local: |
| 10 | + :backlinks: none |
| 11 | + :depth: 1 |
| 12 | + :class: singlecol |
| 13 | + |
| 14 | +.. include:: /includes/fact-vsce-preview.rst |
| 15 | + |
| 16 | +You can create |
| 17 | +:manual:`time series collections </core/timeseries-collections/>` using |
| 18 | +a MongoDB Playground. |
| 19 | + |
| 20 | +Prerequisites |
| 21 | +------------- |
| 22 | + |
| 23 | +If you have not done so already, you must complete the following |
| 24 | +prerequisites before you can create a time series collection with a |
| 25 | +MongoDB Playground: |
| 26 | + |
| 27 | +- :ref:`Create a connection to a MongoDB deployment |
| 28 | + <vsce-connect-task>`. |
| 29 | +- :ref:`Activate the connection to the MongoDB deployment |
| 30 | + <vsce-activate-connection>`. |
| 31 | + |
| 32 | +Create a Time Series Collection |
| 33 | +------------------------------- |
| 34 | + |
| 35 | +Once you connect to your deployment using MongoDB for VS code, use the left |
| 36 | +navigation to: |
| 37 | + |
| 38 | +1. Expand an active connection and hover over the database where you want |
| 39 | + your collection to exist. |
| 40 | + |
| 41 | +#. Click the :icon-fa5:`plus` icon that appears. |
| 42 | + |
| 43 | +#. A MongoDB playground automatically opens with a template form to create |
| 44 | + both regular collections and time series collections. |
| 45 | + |
| 46 | +#. Delete the regular collection form and uncomment the time series form. |
| 47 | + |
| 48 | +#. Fill in the provided fields with details for your time series collection. |
| 49 | + |
| 50 | +#. To run the playground, click the :guilabel:`Play Button` at the top right |
| 51 | + of the VS code navigation bar. |
| 52 | + |
| 53 | +After running the playground with the time series collection, the left |
| 54 | +navigation will update the collection icon to identify it is a |
| 55 | +time series collection. |
| 56 | + |
| 57 | +.. figure:: /images/vsce-time-series-icon.png |
| 58 | + :figwidth: 200px |
| 59 | + :alt: Image showing time series icon in VS Code extension |
| 60 | + |
| 61 | +.. seealso:: |
| 62 | + |
| 63 | + - To learn more about time series collections, see |
| 64 | + :manual:`Time Series Collections </core/timeseries-collections/>` |
| 65 | + |
| 66 | + - To add documents to the collection, see |
| 67 | + :ref:`vsce-create-doc-playground`. |
| 68 | + |
| 69 | +Example |
| 70 | +------- |
| 71 | + |
| 72 | +This example creates a time series collection named ``weather`` in the ``test`` |
| 73 | +database. |
| 74 | + |
| 75 | +To use this example, start with a collection template from your MongoDB |
| 76 | +Playgrounds. Delete the template form for regular collections and keep the |
| 77 | +template for time series collections found below the regular collection |
| 78 | +template. |
| 79 | + |
| 80 | +.. code-block:: javascript |
| 81 | + |
| 82 | + use('test'); |
| 83 | + |
| 84 | + db.createCollection( |
| 85 | + "weather", |
| 86 | + { |
| 87 | + timeseries: { |
| 88 | + timeField: "timestamp", |
| 89 | + granularity: "hours" |
| 90 | + } |
| 91 | + } |
| 92 | + ) |
| 93 | + |
| 94 | +In the example: |
| 95 | + |
| 96 | +- ``use('test')`` selects the database where the collection is added to. |
| 97 | + |
| 98 | +- ``timeseries`` specifies fields to create a time series collection. |
| 99 | + |
| 100 | + - ``timeField: "timestamp"`` names the field that contains the dates in |
| 101 | + the time series documents. In this case, it is ``timestamp``. |
| 102 | + |
| 103 | + - ``granularity: "hours"`` defines the time scale by which the documents |
| 104 | + are stored. |
| 105 | + |
| 106 | +When you press the :guilabel:`Play Button`, MongoDB for VS Code splits your |
| 107 | +Playground and outputs the following result in the Playground Results.json |
| 108 | +pane to confirm the creation of the time series collection. |
| 109 | + |
| 110 | +.. code-block:: javascript |
| 111 | + |
| 112 | + { |
| 113 | + "ok": 1 |
| 114 | + } |
| 115 | + |
| 116 | +The ``weather`` collection also appears in your collection list, and is |
| 117 | +marked with the time series icon. |
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