Loading MySQL tables
To mount a MySQL database into the sgr engine using
mysql_fdw, run:
$ sgr mount mysql_fdw local_schema -c username:password@host:port -o@- <<EOF
{
    "dbname": "dbname",
    "tables": ["table_1"]
}
EOF
This will mount a MySQL schema remote_schema into a local schema
local_schema on the sgr engine. Note that if your MySQL server is running on
localhost and you wish to access it over a TCP connection, you should use
127.0.0.1 instead of localhost as the host.
"tables" can be omitted (in which case all tables in remote_schema will be
mounted into local_schema).
You can also pass a dictionary of tables and their schema as tables. This will
override the schema that's inferred by IMPORT FOREIGN SCHEMA. For example:
{
  "tables": {
    "table_1": {
      "schema": {
        "col_1": "integer",
        "col_2": "text"
      }
    }
  }
}
To snapshot the table, making it part of an actual Splitgraph image, use the
sgr import command.