final SqlToRelConverter sqlToRelConverter =
new SqlToRelConverter(
new ViewExpanderImpl(), validator, createCatalogReader(), planner,
createRexBuilder(), convertletTable);
sqlToRelConverter.setTrimUnusedFields(false);
sqlToRelConverter.enableTableAccessConversion(false);
rel = sqlToRelConverter.convertQuery(validatedSqlNode, false, true);
rel = sqlToRelConverter.flattenTypes(rel, true);
rel = RelDecorrelator.decorrelateQuery(rel);
state = State.STATE_5_CONVERTED;
return rel;