存储过程中如何获取错误信息

 DECLARE  @test_val  INT;
 BEGIN TRY
   -- 导致一个除零错误
   SET @test_val = 1024 / 0;
   PRINT(STR(@test_val));
 END TRY
 BEGIN CATCH
   PRINT('错误代码 = ' + STR(ERROR_NUMBER()));
   PRINT('错误严重级别 = ' + STR(ERROR_SEVERITY()));
   PRINT('错误状态代码 = ' + STR(ERROR_STATE()));
   PRINT('错误信息 = ' + ERROR_MESSAGE());
 END CATCH
 go