I have multiple tables in my data model. How could I quickly list the size (volume of data) contained by each table?
Check your Document Settings / Tables Sheet
Open Table Viewer in you qvw document and hover the cursor on Table header.
You can see some thing like this:
You can use the System fields $Table and $Rows.
Take a table box and add $Table and $Rows where $Table gives you the list of tables and $Rows will give you the corresponding rows of that table.
I found something also useful: Document settings -> General -> press Memory Statics button -> save a file
Open the file with Excel and you can see various statistics on object memory consumption.
Retrieving data ...