MySQL存储过程

CREATE DEFINER=`root`@`%` PROCEDURE `p_phone_comments`()
BEGIN
#################################自动计算手机样本内容属于哪一类型的评价因子的过程#############################################
#@author Ivan 2862099249@qq.com
#@create 2014年12月17日 下午12:20:44 
#@update xxxx年xx月xx日  xxxxxxx by xxx
#################################自动计算手机样本内容属于哪一类型的评价因子的过程#############################################
DECLARE p_typ_id int default 0 ;
DECLARE p_keyword varchar(5000) default '' ;
DECLARE done INT DEFAULT 0; 
DECLARE p_contents varchar(5000) default '' ;
DECLARE p_id char(36) default '' ;
DECLARE p_count int default 0;
DECLARE p_i int;
DECLARE p_split_key varchar(30) default '';
DECLARE p_iscontain int default 0;

DECLARE cur_keys cursor for select t.typ_id,group_concat(t.keyword) from keyword_dic t group by t.typ_id;
DECLARE cur_sample cursor for select tt.id, tt.contents from t_comments_sample2 tt;

DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = 1;

#清空上次运行的结果,默认将评价因子置为0
UPDATE t_comments_sample2 
SET 
    price = 0,
    experience = 0,
    function = 0,
    brandrelate = 0,
    surface = 0,
    advert = 0,
    servicefeedback = 0,
    quality = 0;

open cur_keys;

    keys_loop: LOOP  #第一层循环start：评价因子
         set done=0; 
         FETCH cur_keys INTO p_typ_id, p_keyword;  
         IF done=1 THEN  
            LEAVE keys_loop;
         else
            open cur_sample;
         
            sample_loop: LOOP #第二层循环start:样本
                      FETCH cur_sample INTO p_id, p_contents;
                IF done=1 THEN  
                            LEAVE sample_loop;
                else
                            set p_iscontain = 0;
                    set p_count = (CHAR_LENGTH(p_keyword) - CHAR_LENGTH(REPLACE(p_keyword, ',', ''))) + 1;
                    split_key_while: while p_count > 0 #第三层循环start:判断样本内容是否包含评价因子的关键字
                        do
                                  set p_split_key = SUBSTRING_INDEX(SUBSTRING_INDEX(p_keyword, ',', -(p_count)),',',1);
                            IF (LOCATE(p_split_key,p_contents) > 0) THEN
                                #跳出循环
                                set p_iscontain = 1;
                                            LEAVE split_key_while;
                                      end if;
                            set p_count = p_count - 1;
                            end while split_key_while;#第三层循环end
                
                    if p_iscontain = 1 then
                                  #更新id对应的记录
                                  if p_typ_id = 5 then 
                                      update t_comments_sample2 set price = 1 where id = p_id and price = 0;
                                  elseif p_typ_id = 6 then 
                                      update t_comments_sample2 set experience = 1 where id = p_id and experience = 0;
                                  elseif p_typ_id = 4 then 
                                      update t_comments_sample2 set function = 1 where id = p_id and function = 0;
                                  elseif p_typ_id = 1 then 
                                      update t_comments_sample2 set brandrelate = 1 where id = p_id and brandrelate = 0;
                                  elseif p_typ_id = 2 then 
                                      update t_comments_sample2 set surface = 1 where id = p_id and surface = 0;
                                  elseif p_typ_id = 8 then 
                                      update t_comments_sample2 set advert = 1 where id = p_id and advert = 0;
                                  elseif p_typ_id = 7 then 
                                      update t_comments_sample2 set servicefeedback = 1 where id = p_id and servicefeedback = 0;
                                  elseif p_typ_id = 3 then 
                                      update t_comments_sample2 set quality = 1 where id = p_id and quality = 0;
                                  end if;
                    end if;
                      end if;
            end LOOP sample_loop;#第二层循环end
         
            close cur_sample;
         end if;
      END LOOP keys_loop;  #第一层循环end
close cur_keys;

END

转载于:https://www.cnblogs.com/ivan0626/p/4169178.html

来源：https://blog.csdn.net/weixin_30628801/article/details/99358728