Hi Doug, we also looked at this. The SQL query is inside the Information Link but only if it has been modified. Are you using Information Links and have those had their SQL manually modified? If you so you can find the SQL by looking inside the Information Link BLOB (which is an XML object) in the databases.
In the Spotfire server tomcat/logs directory, there is sql.log file that contains sql queries made. You can also view this on the Spotfire server web page in the Monitoring and Diagnostics section; there is a view logs link for the Spotfire server.
sql.log : Information about executed SQL queries performed when an information link is executed.