修正数据

migrations/000137_add_package_usage_traffic_snapshots.up.sql

@@ -0,0 +1,27 @@
+-- 为 tb_package_usage 增加流量语义快照字段，并按当前套餐模板回填历史数据。
+
+ALTER TABLE tb_package_usage
+    ADD COLUMN virtual_total_mb_snapshot BIGINT NOT NULL DEFAULT 0,
+    ADD COLUMN display_gain_ratio_snapshot DECIMAL(18,6) NOT NULL DEFAULT 1.0,
+    ADD COLUMN enable_virtual_data_snapshot BOOLEAN NOT NULL DEFAULT FALSE;
+
+COMMENT ON COLUMN tb_package_usage.virtual_total_mb_snapshot IS '虚总量快照（业务停机阈值）';
+COMMENT ON COLUMN tb_package_usage.display_gain_ratio_snapshot IS '展示倍率快照（real_total_mb / virtual_total_mb）';
+COMMENT ON COLUMN tb_package_usage.enable_virtual_data_snapshot IS '是否启用虚流量快照';
+
+UPDATE tb_package_usage pu
+SET
+    virtual_total_mb_snapshot = CASE
+        WHEN p.enable_virtual_data = TRUE AND p.virtual_data_mb > 0 THEN p.virtual_data_mb
+        ELSE pu.data_limit_mb
+    END,
+    display_gain_ratio_snapshot = CASE
+        WHEN p.enable_virtual_data = TRUE AND p.virtual_data_mb > 0 THEN ROUND((pu.data_limit_mb::NUMERIC / p.virtual_data_mb::NUMERIC), 6)
+        ELSE 1.0
+    END,
+    enable_virtual_data_snapshot = CASE
+        WHEN p.enable_virtual_data = TRUE AND p.virtual_data_mb > 0 THEN TRUE
+        ELSE FALSE
+    END
+FROM tb_package p
+WHERE p.id = pu.package_id;