AppInsight applications were designed to require (and allow) only minimum configuration. Therefore there are some settings (like actual queries used for polling) hidden from UI of edit page. However, there is way how you can check what it does against server - simply when you enable debug logging on selected application XX, generated log files (stored to ProgramData\Solarwinds\Logs\APM\ApplicationLogs\AppIdXX on orion server) will contain all queries that are being executed during polling.
"SQL Table Monitor" is special type of component which can be used only in AppInsight applications and cannot be used in generic applications because there is no generic way how to process and store tabular data which it produces.