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sql/fix_audit_fields.sql

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+-- 数据库审计字段修复脚本
+-- 用于确保所有表都能正确处理 create_by 和 create_time 字段
+
+-- 步骤 1: 检查哪些表有审计字段但没有正确设置
+-- 查询所有包含审计字段的表及其约束状态
+SELECT 
+    table_name,
+    column_name,
+    is_nullable,
+    column_default
+FROM 
+    information_schema.columns 
+WHERE 
+    table_schema = 'public'
+    AND column_name IN ('create_by', 'create_time', 'update_by', 'update_time')
+    AND is_nullable = 'NO'  -- 表示有NOT NULL约束
+ORDER BY 
+    table_name, column_name;
+
+-- 步骤 2: 为所有审计字段设置合理的默认值（可选）
+-- 这样即使自动填充失败，也不会违反约束
+ALTER TABLE "public"."adm_practitioner" ALTER COLUMN "create_by" SET DEFAULT 'system';
+ALTER TABLE "public"."adm_practitioner" ALTER COLUMN "update_by" SET DEFAULT 'system';
+
+-- 步骤 3: 检查并更新现有数据，确保没有NULL值
+-- 对于create_by字段
+UPDATE "public"."adm_practitioner" 
+SET "create_by" = 'system' 
+WHERE "create_by" IS NULL OR "create_by" = '';
+
+-- 对于update_by字段
+UPDATE "public"."adm_practitioner" 
+SET "update_by" = 'system' 
+WHERE "update_by" IS NULL;
+
+-- 步骤 4: 为其他可能存在相同问题的表执行类似操作
+-- 以下是根据数据库结构推测的一些表名，您可能需要根据实际情况调整
+DO $$
+DECLARE
+    table_name text;
+    tables_with_audit_fields CURSOR FOR
+        SELECT DISTINCT t.table_name
+        FROM information_schema.tables t
+        JOIN information_schema.columns c ON t.table_name = c.table_name
+        WHERE t.table_schema = 'public'
+          AND c.column_name IN ('create_by', 'create_time', 'update_by', 'update_time')
+          AND c.is_nullable = 'NO';
+BEGIN
+    FOR rec IN tables_with_audit_fields LOOP
+        BEGIN
+            -- 为每个表设置审计字段的默认值
+            EXECUTE format('ALTER TABLE "public"."%I" ALTER COLUMN "create_by" SET DEFAULT ''system''', rec.table_name);
+            EXECUTE format('ALTER TABLE "public"."%I" ALTER COLUMN "update_by" SET DEFAULT ''system''', rec.table_name);
+            
+            -- 更新现有的NULL值
+            EXECUTE format('UPDATE "public"."%I" SET "create_by" = ''system'' WHERE "create_by" IS NULL OR "create_by" = ''''', rec.table_name);
+            EXECUTE format('UPDATE "public"."%I" SET "update_by" = ''system'' WHERE "update_by" IS NULL', rec.table_name);
+            
+            RAISE NOTICE 'Processed table: %', rec.table_name;
+        EXCEPTION
+            WHEN OTHERS THEN
+                RAISE NOTICE 'Could not process table: %, Error: %', rec.table_name, SQLERRM;
+        END;
+    END LOOP;
+END $$;
+
+-- 步骤 5: 验证修复结果
+-- 检查是否还有表存在审计字段的NULL值
+SELECT 
+    table_name,
+    column_name,
+    COUNT(*) as null_count
+FROM (
+    SELECT 'adm_practitioner' as table_name, 'create_by' as column_name, create_by FROM "public"."adm_practitioner" WHERE create_by IS NULL
+    UNION ALL
+    SELECT 'adm_practitioner' as table_name, 'update_by' as column_name, update_by FROM "public"."adm_practitioner" WHERE update_by IS NULL
+    -- 在这里添加其他表的检查
+) t
+GROUP BY table_name, column_name;
+
+-- 注意事项：
+-- 1. 在生产环境执行前务必备份数据库
+-- 2. 根据实际业务需求调整默认值（例如使用实际的用户名而非'system'）
+-- 3. 确保应用程序层面的自动填充机制正常工作
+-- 4. 考虑在应用程序启动时进行审计字段的完整性检查