SubQuery(Database database, int level, QueryExpression queryExpression, int mode) { this.level = level; this.queryExpression = queryExpression; this.database = database; switch (mode) { case OpTypes.EXISTS: isExistsPredicate = true; break; case OpTypes.IN: uniqueRows = true; if (queryExpression != null) { queryExpression.setFullOrder(); } break; case OpTypes.UNIQUE: isUniquePredicate = true; if (queryExpression != null) { queryExpression.setFullOrder(); } } }