Default DB schema when editing code Follow

Hi there,

So, I'm editing a piece of PHP code that includes a string which is actually a SQL query. PhpStorm is smart enough to offer me code completion while editing that SQL string. The thing is that I have multiple DB connections defined in the Database tool window. Which one of those is being used for code completion (if any)? How can I force PhpStorm to use a certain one?

Thank you.