GROUP BY 后缀式 WITH ROLLUP 在 openGauss 5.0 A 模式支持吗？

判定为 undeclared。能力矩阵暂未声明该特征，按未覆盖处理并降低置信度，建议 PoC 复核

MYSQL→openGauss 5.0 A 模式：GROUP BY 后缀式 WITH ROLLUP迁移

将后缀式 GROUP BY a, b WITH ROLLUP 改为目标的 GROUP BY ROLLUP(a, b)，复杂 HAVING 可拆为 CTE/UNION ALL

支持度undeclared

严重度major

置信度low

依据规则my.syntax.group_by_with_rollup

将后缀式 GROUP BY a, b WITH ROLLUP 改为目标的 GROUP BY ROLLUP(a, b)，复杂 HAVING 可拆为 CTE/UNION ALL

能力矩阵暂未声明该特征，按未覆盖处理并降低置信度，建议 PoC 复核

库侧改造

可行：按原汇总层级重写为 ROLLUP 或显式 GROUPING SETS

应用侧改造

可行：消费方若依赖小计行位置或 NULL 标记，需同步调整识别逻辑

推荐路线：db_side。验证建议：对照明细、小计、总计行数和值，并覆盖真实 NULL、GROUPING、HAVING 和显式 ORDER BY

SELECT zone, state, COUNT(*) FROM master_data GROUP BY zone, state WITH ROLLUP

SELECT year, country, SUM(profit) FROM sales GROUP BY year, country WITH ROLLUP HAVING SUM(profit) > 0