兼容性判定
真机验证：opengauss 6.0.5, panweidb 3.0 · gbase公开资料依据 · 建议 PoC 复核支持度undeclared
严重度major
置信度medium
依据规则ora.object.mview
怎么改
需按命中位置逐条评估改写
判定说明
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 / 应用侧路径
库侧改造
可行：目标端支持物化视图时按其刷新能力重建；不支持 FAST/ON COMMIT 时降级定时全量刷新或改实体表 + 定时作业
应用侧改造
可行：改应用层缓存或实时聚合查询（数据量允许时）
推荐路线：db_side。验证建议：刷新周期内数据陈旧度与业务确认；刷新后与基表聚合结果比对
规则样例
CREATE MATERIALIZED VIEW mv_sum REFRESH FAST ON COMMIT AS SELECT dept, SUM(sal) s FROM emp GROUP BY dept
CREATE MATERIALIZED VIEW mv_snap BUILD IMMEDIATE REFRESH COMPLETE AS SELECT * FROM t
CREATE OR REPLACE VIEW v_sum AS SELECT dept, SUM(sal) s FROM emp GROUP BY dept
参考来源
- https://www.gbase.cn/docs/gbase-8s/05%20%E6%95%B0%E6%8D%AE%E5%BA%93%E5%BC%80%E5%8F%91/03%20SQL%E6%8C%87%E5%8D%97%E8%AF%AD%E6%B3%95/
- https://docs.gbasedbt.com/gbase8s/
- internal: Minorli/ob_comparator compatibility_registry.json (MATERIALIZED_VIEW fixup=manual)
- internal: Minorli/ob_comparator schema_diff_reconciler.py:38032 apply_ob_feature_gates