show_schema {RGMQL} | R Documentation

## Show dataset schema

### Description

It shows the region attribute schema of a specific GMQL dataset on remote repository, using the proper GMQL web service available on a remote server

### Usage

    show_schema(url, datasetName)

### Arguments

`url` | string url of server: It must contain the server address and base url; service name is added automatically
`datasetName` | name of dataset to get the schema; if the dataset is a public dataset, we have to add "public." as prefix, as shown in the example below, otherwise no prefix is needed

### Details

If error occurs, a specific error is printed

### Value

List of region schema fields. Every field in the list is described by:

- name: name of field (e.g. chr, start, end, strand, ...)

- fieldType: (e.g. STRING, DOUBLE, ...)

### Examples

    ## Login to GMQL REST services suite as guest

    remote_url = "http://www.gmql.eu/gmql-rest/"
    login_gmql(remote_url)

    ## Show schema of public dataset 'Example_Dataset_1'

    list <- show_schema(remote_url, "public.Example_Dataset_1")

[Package RGMQL version 1.6.0 Index]