{"id":16703176,"url":"https://github.com/phstudy/postgresql-zetasketch","last_synced_at":"2026-05-09T02:17:53.304Z","repository":{"id":148596386,"uuid":"235056371","full_name":"phstudy/postgresql-zetasketch","owner":"phstudy","description":"ZetaSketch HLL++ functions for PostgreSQL","archived":false,"fork":false,"pushed_at":"2020-02-14T07:36:15.000Z","size":10,"stargazers_count":4,"open_issues_count":0,"forks_count":0,"subscribers_count":2,"default_branch":"master","last_synced_at":"2025-01-21T02:41:37.280Z","etag":null,"topics":["bigquery","hll","java","postgresql","postgresql-extension","zetasketch"],"latest_commit_sha":null,"homepage":"","language":"Java","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/phstudy.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2020-01-20T08:48:00.000Z","updated_at":"2024-08-19T07:48:57.000Z","dependencies_parsed_at":"2023-05-20T16:14:12.288Z","dependency_job_id":null,"html_url":"https://github.com/phstudy/postgresql-zetasketch","commit_stats":null,"previous_names":[],"tags_count":1,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/phstudy%2Fpostgresql-zetasketch","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/phstudy%2Fpostgresql-zetasketch/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/phstudy%2Fpostgresql-zetasketch/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/phstudy%2Fpostgresql-zetasketch/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/phstudy","download_url":"https://codeload.github.com/phstudy/postgresql-zetasketch/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":243544657,"owners_count":20308169,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["bigquery","hll","java","postgresql","postgresql-extension","zetasketch"],"created_at":"2024-10-12T19:07:19.006Z","updated_at":"2025-10-18T07:48:06.792Z","avatar_url":"https://github.com/phstudy.png","language":"Java","funding_links":[],"categories":[],"sub_categories":[],"readme":"# PostgreSQL-ZetaSketch\nPostgreSQL-ZetaSketch brings [Google BigQuery HLL++ compatible functions](https://cloud.google.com/bigquery/docs/reference/standard-sql/hll_functions) to PostgreSQL.\n\n## Run in [Docker](https://hub.docker.com/r/study/postgresql-zetasketch)\n```bash\ndocker run --name some-postgres -e POSTGRES_PASSWORD=mysecretpassword -d study/postgresql-zetasketch\n```\n\n\n\n## Test HLL++ functions in Docker\n\n### Example\n```bash\ndocker run --name some-postgres -e POSTGRES_PASSWORD=mysecretpassword -d study/postgresql-zetasketch\n\ndocker exec -it some-postgres psql -U postgres\n\npostgres=# SELECT HLL_COUNT.MERGE(respondents_hll) AS num_respondents, flavor\nFROM (\n  SELECT\n    HLL_COUNT.INIT(respondent) AS respondents_hll,\n    flavor,\n    country\n  FROM (\n    SELECT * FROM (\n      VALUES (1, 'Vanilla', 'CH'),\n             (1, 'Chocolate', 'CH'),\n             (2, 'Chocolate', 'US'),\n             (2, 'Strawberry', 'US')) AS t(respondent, flavor, country)) as foo\n  GROUP BY flavor, country) as bar\nGROUP BY flavor;\n```\n\n\n### Result\n\n```\n num_respondents |   flavor   \n-----------------+------------\n               1 | Strawberry\n               1 | Vanilla\n               2 | Chocolate\n(3 rows)\n```\n\n\n\n## How to build\n\n### Install dependencies\n```bash\n$ git clone https://github.com/tada/pljava.git\n$ cd pljava\n$ git checkout tags/V1_5_5\n$ mvn -Pwnosign clean install\n$ cd ..\n```\n\n### Build postgresql-zetasketch jar\n```\n$ git clone https://github.com/phstudy/postgresql-zetasketch.git\n$ mvn -f postgresql-zetasketch/pom.xml clean package\n```","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fphstudy%2Fpostgresql-zetasketch","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fphstudy%2Fpostgresql-zetasketch","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fphstudy%2Fpostgresql-zetasketch/lists"}