postgres_hyperloglog/META.json at master · conversant/postgres_hyperloglog · GitHub

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{
   "name": "hyperloglog_estimator",
   "abstract": "Estimates number of distinct elements in a data set (aggregate and a data type).",
   "description": "Provides an alternative to COUNT(DISTINCT) aggregate, computing an estimate of number of distinct values, and a data type that may be used within a table (and updated continuously). This implementation is based on HyperLogLog algorithm, an enhancement of LogLog (see the paper 'HyperLogLog: the analysis of near-optimal cardinality estimation algorithm' by Flajolet, Fusy, Gandouet and Meunier, published in 2007).",
   "version": "2.1.0",
   "maintainer": "Conversant <conversantoss@conversantmedia.com>",
   "license": "bsd",
   "prereqs": {
      "runtime": {
         "requires": {
            "PostgreSQL": "8.2"
         }
      }
   },
   "provides": {
     "hyperloglog_counter": {
       "file": "sql/postgres.sql",
       "docfile" : "README.md",
       "version": "2.1.0"
     }
   },
   "resources": {
      "repository": {
        "url":  "https://github.com/conversant/postgres_hyperloglog.git",
        "web":  "https://github.com/conversant/postgres_hyperloglog",
        "type": "git"
      },
   },
   "tags" : ["distinct", "count", "aggregate", "estimate", "hyperloglog"],
   "meta-spec": {
      "version": "1.0.0",
      "url": "http://pgxn.org/meta/spec.txt"
   },
   "release_status" : "production"
}