Ordering and limiting Firestore queries with a filter (async)
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Ordering and limiting Firestore queries with a filter (async).
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For detailed documentation that includes this code sample, see the following:
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[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],[],[[["\u003cp\u003eThis code sample demonstrates how to order and limit data within Firestore queries using a filter asynchronously.\u003c/p\u003e\n"],["\u003cp\u003eThe example uses Python to query a "cities" collection, filtering for cities with a population greater than 2,500,000.\u003c/p\u003e\n"],["\u003cp\u003eThe query then orders the results by population and limits the returned documents to the top two.\u003c/p\u003e\n"],["\u003cp\u003eThe full documentation for this code sample, which contains more details, is found in the "Order and Limit Data" section of the Firestore documentation.\u003c/p\u003e\n"]]],[],null,["# Ordering and limiting Firestore queries with a filter (async).\n\nExplore further\n---------------\n\n\nFor detailed documentation that includes this code sample, see the following:\n\n- [Order and limit data](/firestore/native/docs/query-data/order-limit-data)\n- [Order and limit data with Cloud Firestore](https://firebase.google.com/docs/firestore/query-data/order-limit-data)\n\nCode sample\n-----------\n\n### Python\n\n\nTo authenticate to Firestore, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n cities_ref = db.collection(\"cities\")\n query = (\n cities_ref.where(filter=FieldFilter(\"population\", \"\u003e\", 2500000))\n .order_by(\"population\")\n .limit(2)\n )\n results = query.stream()\n\nWhat's next\n-----------\n\n\nTo search and filter code samples for other Google Cloud products, see the\n[Google Cloud sample browser](/docs/samples?product=firestore)."]]
