useMySQL,EnsDb-method {ensembldb} | R Documentation

## Use a MariaDB/MySQL backend

### Description

Change the SQL backend from SQLite to MySQL. When first called on an `EnsDb` object, the function tries to create and save all of the data into a MySQL database. All subsequent calls will connect to the already existing MySQL database.

### Usage

    ## S4 method for signature 'EnsDb'
    useMySQL(x, host = "localhost", port = 3306, user, pass)

### Arguments

`x` | The `EnsDb` object.
`host` | Character vector specifying the host on which the MariaDB/MySQL server runs.
`port` | The port on which the MariaDB/MySQL server can be accessed.
`user` | The user name for the MariaDB/MySQL server.
`pass` | The password for the MariaDB/MySQL server.

### Details

This functionality requires that the `RMariaDB` package is installed and that the user has (write) access to a running MySQL server. If the corresponding database does already exist users without write access can use this functionality.

### Value

A `EnsDb` object providing access to the data stored in the MySQL backend.

### Note

At present the function does not evaluate whether the versions between the SQLite and MariaDB/MySQL database differ.

### Author(s)

Johannes Rainer

### Examples

    ## Load the EnsDb database (SQLite backend).
    library(EnsDb.Hsapiens.v86)
    edb <- EnsDb.Hsapiens.v86
    ## Now change the backend to MySQL; my_user and my_pass should
    ## be the user name and password to access the MySQL server.
    ## Not run:
    edb_mysql <- useMySQL(edb, host = "localhost", user = my_user, pass = my_pass)

    ## End(Not run)

[Package ensembldb version 2.16.4 Index]