public XSQLBluePrintNode getMainTable() {
if (tablesInQuery.size() == 1) {
return tablesInQuery.get(0);
}
XSQLBluePrintNode result = null;
for (XSQLBluePrintNode node : tablesInQuery) {
if (result == null) {
result = node;
} else if (result.getLevel() < node.getLevel()) {
result = node;
}
}
return result;
}
