{"_id":"59848c8a339eac000f54a50e","project":"55faf11ba62ba1170021a9a7","version":{"_id":"55faf11ba62ba1170021a9aa","project":"55faf11ba62ba1170021a9a7","__v":38,"createdAt":"2015-09-17T16:58:03.490Z","releaseDate":"2015-09-17T16:58:03.490Z","categories":["55faf11ca62ba1170021a9ab","55faf8f4d0e22017005b8272","55faf91aa62ba1170021a9b5","55faf929a8a7770d00c2c0bd","55faf932a8a7770d00c2c0bf","55faf94b17b9d00d00969f47","55faf958d0e22017005b8274","55faf95fa8a7770d00c2c0c0","55faf96917b9d00d00969f48","55faf970a8a7770d00c2c0c1","55faf98c825d5f19001fa3a6","55faf99aa62ba1170021a9b8","55faf99fa62ba1170021a9b9","55faf9aa17b9d00d00969f49","55faf9b6a8a7770d00c2c0c3","55faf9bda62ba1170021a9ba","5604570090ee490d00440551","5637e8b2fbe1c50d008cb078","5649bb624fa1460d00780add","5671974d1b6b730d008b4823","5671979d60c8e70d006c9760","568e8eef70ca1f0d0035808e","56d0a2081ecc471500f1795e","56d4a0adde40c70b00823ea3","56d96b03dd90610b00270849","56fbb83d8f21c817002af880","573c811bee2b3b2200422be1","576bc92afb62dd20001cda85","5771811e27a5c20e00030dcd","5785191af3a10c0e009b75b0","57bdf84d5d48411900cd8dc0","57ff5c5dc135231700aed806","5804caf792398f0f00e77521","58458b4fba4f1c0f009692bb","586d3c287c6b5b2300c05055","58ef66d88646742f009a0216","58f5d52d7891630f00fe4e77","59a555bccdbd85001bfb1442"],"is_deprecated":false,"is_hidden":false,"is_beta":true,"is_stable":true,"codename":"","version_clean":"1.0.0","version":"1.0"},"category":{"_id":"58458b4fba4f1c0f009692bb","project":"55faf11ba62ba1170021a9a7","version":"55faf11ba62ba1170021a9aa","__v":0,"sync":{"url":"","isSync":false},"reference":false,"createdAt":"2016-12-05T15:44:15.650Z","from_sync":false,"order":6,"slug":"datasets-hub","title":"DATASETS HUB"},"user":"5613e4f8fdd08f2b00437620","__v":0,"parentDoc":null,"updates":[],"next":{"pages":[],"description":""},"createdAt":"2017-08-04T15:02:34.996Z","link_external":false,"link_url":"","githubsync":"","sync_unique":"","hidden":false,"api":{"settings":"","results":{"codes":[]},"auth":"required","params":[],"url":""},"isReference":false,"order":31,"body":"##Overview\n\nBuild a query across multiple datasets at once using harmonized metadata ontology. Metadata consists of properties, which describe each dataset’s entities, and their values. Entities are particular resources with UUIDs, such as files, cases, samples, and cell lines. Learn more [about metadata for datasets](about-metadata-for-datasets).\n\nSimply select the datasets you'd like to query on the Data Browser Landing page before starting your query. Currently, you can choose two harmonized datasets, TCGA GRCh38 and TARGET GRCh38 to perform a multiple dataset query.\n\nLearn more about the [Data Browser features](doc:data-browser-features) and the [parts of a Data Browser query](doc:structure-of-a-data-browser-query) to get started.\n\n<div align=\"right\"><a href=\"#top\">top</a></div>\n\n##Resources\n\n* [Data Browser features](doc:data-browser-features) \n* [Data Browser query: start from scratch](doc:data-browser-query-start-from-scratch) \n* [Structure of a Data Browser query](doc:data-browser-query-structure)\n<div align=\"right\"><a href=\"#top\">top</a></div>","excerpt":"<a href=\"query-datasets\" style=\"color:#132c56\">QUERY DATASETS</a> ><a href=\"about-the-data-browser\" style=\"color:#132c56\">About the Data Browser</a> > Data Browser query: multiple dataset query","slug":"data-browser-query-multiple-dataset-query","type":"basic","title":"↳ Data Browser query: multiple dataset query"}

↳ Data Browser query: multiple dataset query

<a href="query-datasets" style="color:#132c56">QUERY DATASETS</a> ><a href="about-the-data-browser" style="color:#132c56">About the Data Browser</a> > Data Browser query: multiple dataset query

##Overview Build a query across multiple datasets at once using harmonized metadata ontology. Metadata consists of properties, which describe each dataset’s entities, and their values. Entities are particular resources with UUIDs, such as files, cases, samples, and cell lines. Learn more [about metadata for datasets](about-metadata-for-datasets). Simply select the datasets you'd like to query on the Data Browser Landing page before starting your query. Currently, you can choose two harmonized datasets, TCGA GRCh38 and TARGET GRCh38 to perform a multiple dataset query. Learn more about the [Data Browser features](doc:data-browser-features) and the [parts of a Data Browser query](doc:structure-of-a-data-browser-query) to get started. <div align="right"><a href="#top">top</a></div> ##Resources * [Data Browser features](doc:data-browser-features) * [Data Browser query: start from scratch](doc:data-browser-query-start-from-scratch) * [Structure of a Data Browser query](doc:data-browser-query-structure) <div align="right"><a href="#top">top</a></div>