mysql 中replace()批量替换指定字符语句
本文章介绍了关于一个mysql 中replace()批量替换指定字符语句的,我们利用了update set和replace一起工作,这样就可以实现我们想要的东西了。
将cdb_pms表subject字段中的Welcom to替换成 欢迎光临
代码如下 | 复制代码 |
UPDATE `cdb_pms` |
替换cdb_posts表的message字段,将“viewthread.?tid=3989”替换成“viewthread.php?tid=16546”
代码如下 | 复制代码 |
UPDATE `cdb_posts` |
删除所有的空格
代码如下 | 复制代码 |
UPDATE `es_product` SET `pro_pub_time` = TRIM(`pro_pub_time`) |
删除所有饱含'['或者']'或者'.'的字符
代码如下 | 复制代码 |
UPDATE `es_product` SET `pro_pub_time` = REPLACE(`pro_pub_time`, '[','') WHERE INSTR(`pro_pub_time`,'[') > 0 UPDATE `es_product` SET `pro_pub_time` = REPLACE(`pro_pub_time`, ']','') WHERE INSTR(`pro_pub_time`,']') > 0 UPDATE `es_product` SET `pro_pub_time` = REPLACE(`pro_pub_time`, '.','-') WHERE INSTR(`pro_pub_time`,'.') > 0 |
替换所有含中文'-'的为英文'-'
代码如下 | 复制代码 |
UPDATE `es_product` SET `pro_pub_time` = REPLACE(`pro_pub_time`, '-','-') WHERE INSTR(`pro_pub_time`,'-') > 0 |
将所有的年月都替换成'-'
代码如下 | 复制代码 |
UPDATE `es_product` SET `pro_pub_time` = REPLACE(`pro_pub_time`, '年','-') WHERE INSTR(`pro_pub_time`,'年') > 0 |
将所有'2005-04-'这种类型的替换成'2005-04-01'
代码如下 | 复制代码 |
UPDATE `es_product` SET `pro_pub_time` = CONCAT( `pro_pub_time`, '01') WHERE SUBSTRING_INDEX( `pro_pub_time`, '-', -1) = '' AND LENGTH(`pro_pub_time`) > 0 AND LENGTH(`pro_pub_time`) > 5 |
将所有'2005-'这种类型替换成'2005-01-01'
代码如下 | 复制代码 |
UPDATE `es_product` SET `pro_pub_time` = CONCAT( `pro_pub_time`, '01-01') WHERE INSTR(`pro_pub_time`,'-') > 0 AND LENGTH(`pro_pub_time`) = 5 |
将所有 饱含'-',但是位数小于8的改成追加'-01'
代码如下 | 复制代码 |
UPDATE `es_product` SET `pro_pub_time` = CONCAT( `pro_pub_time`, '-01') WHERE INSTR(`pro_pub_time`,'-') > 0 AND LENGTH(`pro_pub_time`) |
将所有'2005'这样的改成'2005-01-01'
代码如下 | 复制代码 |
UPDATE `es_product` SET `pro_pub_time` = CONCAT(`pro_pub_time`,'-01-01') WHERE INSTR(`pro_pub_time`,'-') = 0 AND LENGTH(`pro_pub_time`) = 4 |
最后将所有'2005-01-01'格式化成'2005年01月'
代码如下 | 复制代码 |
UPDATE `es_product` SET `pro_pub_time` = DATE_FORMAT(`pro_pub_time`,'%Y年%m月') WHERE INSTR(`pro_pub_time`,'-') > 0 |

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