暂存

migrations/000204_add_audit_investigation_indexes.up.sql

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+-- 为统一审计跨视角查询补充受控 B-tree 索引，不增加 JSONB 搜索、缓存或分区。
+CREATE INDEX idx_audit_event_action_occurred
+    ON tb_audit_event (action_code, occurred_at DESC, id DESC);
+
+CREATE INDEX idx_audit_event_result_occurred
+    ON tb_audit_event (result, occurred_at DESC, id DESC);
+
+CREATE INDEX idx_audit_event_risk_occurred
+    ON tb_audit_event (risk_level, occurred_at DESC, id DESC);
+
+CREATE INDEX idx_audit_event_category_occurred
+    ON tb_audit_event (category, occurred_at DESC, id DESC);
+
+CREATE INDEX idx_audit_event_source_occurred
+    ON tb_audit_event (source, occurred_at DESC, id DESC);
+
+DROP INDEX idx_audit_event_request;
+CREATE INDEX idx_audit_event_request
+    ON tb_audit_event (request_id, occurred_at DESC, id DESC)
+    WHERE request_id <> '';
+
+DROP INDEX idx_audit_event_parent;
+CREATE INDEX idx_audit_event_parent
+    ON tb_audit_event (parent_event_id, occurred_at DESC, id DESC)
+    WHERE parent_event_id <> '';
+
+CREATE INDEX idx_audit_resource_id_event
+    ON tb_audit_event_resource (resource_type, resource_id, audit_event_id)
+    WHERE resource_id IS NOT NULL;
+
+CREATE INDEX idx_audit_resource_key_event
+    ON tb_audit_event_resource (resource_type, resource_key, audit_event_id);