MariaDB `.env` helper's TABLE_SCHEMA always empty

[Nealium]

This is most likely user error. I'm using dotenv.vim to load my database into the plugin using the string mysql://user:pass@localhost:3306/mydb. I am using MariaDB, but usually it's a 1-1 with mysql

The default helper functions Primary Keys and Foreign Keys seem to go off of {schema} which is always empty for me. I've overridden the default helpers to use {dbname} instead, as per guidance from #108

like this..

let g:db_ui_table_helpers = {
\   'mysql': {
\        "Primary Keys": "SELECT * FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE TABLE_SCHEMA = '{dbname}' AND TABLE_NAME = '{table}' AND CONSTRAINT_TYPE = 'PRIMARY KEY'",
\        "Foreign Keys": "SELECT * FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE TABLE_SCHEMA = '{dbname}' AND TABLE_NAME = '{table}' AND CONSTRAINT_TYPE = 'FOREIGN KEY'"
\   }

This works, but it just bugs the crap out of me that it's "wrong" and this "schema" isn't working for me. Any advice?