ExecuteQuery executes a single query.

GetDefaultDatabaseConfig builds the default database and searchPathConfig NOTE: if the dashboardUI has overridden the search path, opts wil be passed in to set the overridden value.

PgEscapeName escapes strings which will be usaed for Podsdtgres object identifiers (table names, column names, schema names).

PgEscapeSearchPath applies postgres escaping to search path and remove whitespace.

PgEscapeString escapes strings which are to be inserted use a custom escape tag to avoid chance of clash with the escaped text https://medium.com/@lnishada/postgres-dollar-quoting-6d23e4f186ec.

TODO K HACK.

DbClient wraps over `sql.DB` and gives an interface to the database.