sql语法兼容问题修复

ruoyi-bussiness/src/main/java/com/ruoyi/cms/service/impl/InterviewInvitationServiceImpl.java

@@ -100,15 +100,15 @@ public class InterviewInvitationServiceImpl implements InterviewInvitationServic
                 log.info("interview_invitation 表创建成功（序列自增）！");
             } else {
                 log.info("interview_invitation 表结构正常，检查新增列...");
-                // 为已有数据库添加新列（幂等操作，使用 DO 块兼容不支持 IF NOT EXISTS 的数据库版本）
+                // 为已有数据库添加新列（使用 IF NOT EXISTS，兼容 PostgreSQL / HighGo）
                 try {
-                    stmt.execute("DO $$ BEGIN ALTER TABLE interview_invitation ADD COLUMN company_name varchar(200) NULL; EXCEPTION WHEN duplicate_column THEN END; $$;");
+                    stmt.execute("ALTER TABLE interview_invitation ADD COLUMN IF NOT EXISTS company_name varchar(200) NULL");
                 } catch (Exception e) { log.warn("添加 company_name 列失败: {}", e.getMessage()); }
                 try {
-                    stmt.execute("DO $$ BEGIN ALTER TABLE interview_invitation ADD COLUMN job_name varchar(200) NULL; EXCEPTION WHEN duplicate_column THEN END; $$;");
+                    stmt.execute("ALTER TABLE interview_invitation ADD COLUMN IF NOT EXISTS job_name varchar(200) NULL");
                 } catch (Exception e) { log.warn("添加 job_name 列失败: {}", e.getMessage()); }
                 try {
-                    stmt.execute("DO $$ BEGIN ALTER TABLE interview_invitation ADD COLUMN interviewer_name varchar(100) NULL; EXCEPTION WHEN duplicate_column THEN END; $$;");
+                    stmt.execute("ALTER TABLE interview_invitation ADD COLUMN IF NOT EXISTS interviewer_name varchar(100) NULL");
                 } catch (Exception e) { log.warn("添加 interviewer_name 列失败: {}", e.getMessage()); }
             }
         } catch (Exception e) {