dropDatabase
Syntax
dropDatabase(directory)
Arguments
directory the directory where the database is located. For a database in the distributed file system, the directory should start with “dfs://”.
Details
Delete all physical files from the specified database.
Examples
Drop a DFS database:
$ n=1000000
$ ID=rand(10, n)
$ dates=2017.08.07..2017.08.11
$ date=rand(dates, n)
$ x=rand(10.0, n)
$ t=table(ID, date, x);
$ saveText(t, "C:/DolphinDB/Data/t.txt");
$ db = database("dfs://valueDB", VALUE, 2017.08.07..2017.08.11)
$ pt = loadTextEx(db, `pt1, `date, "C:/DolphinDB/Data/t.txt");
$ dropDatabase("dfs://valueDB")
Drop a database on disk:
$ n=1000000
$ ID=rand(10, n)
$ dates=2017.08.07..2017.08.11
$ date=rand(dates, n)
$ x=rand(10.0, n)
$ t=table(ID, date, x)
$ saveText(t, "C:/DolphinDB/Data/t.txt");
$ db = database("C:/DolphinDB/Data/rangedb", RANGE, 0 5 10)
$ pt = loadTextEx(db, `pt, `ID, "C:/DolphinDB/Data/t.txt");
$ dropDatabase("C:/DolphinDB/Data/rangedb");