table.get(key) → singleRowSelection
Get a document by primary key.
If no document exists with that primary key, get will return null.
Example: Find a document by UUID.
r.table("posts").get("a9849eef-7176-4411-935b-79a6e3c56a74").run(conn);
Example: Find a document and merge another document with it.
r.table("heroes").get(3).merge(
r.hashMap("powers", r.array("invisibility", "speed"))
).run(conn);
_Example: Subscribe to a document’s changefeed.
r.table("heroes").get(3).changes().run(conn);
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https://rethinkdb.com/api/java/get/