int is long, select column can be function, some fixes..

just to get it work.. needs improvement

table.cpp

@@ -35,7 +35,9 @@ void Table::print() {
 Table::Table(const Table &other) {
 	m_name = other.m_name;
 	m_col_defs = other.m_col_defs;
-	m_rows.clear();  // row not copied now
+	for(const Row& orig_row : other.m_rows) {
+		addCopyOfRow(orig_row);
+	}
 }
 
 void Table::addRow(const Row &row) {