RangeVariable range = (RangeVariable) rangeVariables.get(i);
HsqlName name = range.rangeTable.getName();
if (name.schema != SqlInvariants.SYSTEM_SCHEMA_HSQLNAME) {
set.add(range.rangeTable.getName());
set.addAll(range.getColumnNames());
} else if (name.type == SchemaObject.TRANSITION) {
set.addAll(range.getColumnNames());
}
}