核心語(yǔ)句：
 

UPDATE `cdb_pms`
 SET `subject` = REPLACE(`subject`, 'Welcome to', '歡迎光臨')

mysql替換字段里數(shù)據(jù)內(nèi)容部分字符串

mysql替換表的字段里面內(nèi)容，如例子：

mysql> select host,user from user  where user='testuser'; 
+-----------------------+----------+
| host                  | user     |
+-----------------------+----------+
| localhost.localdomain | testuser | 
+-----------------------+----------+

update字段host的內(nèi)容，把"main"改成"slave",用REPLACE

mysql> update user set host=REPLACE(host,'main','slave') where user='testuser';       
Query OK, 1 row affected (0.00 sec)
Rows matched: 1  Changed: 1  Warnings: 0

mysql> select host,user from user  where user='testuser';                             
+------------------------+----------+
| host                   | user     |
+------------------------+----------+
| localhost.localdoslave | testuser | 
+------------------------+----------+

由查詢結(jié)果到，數(shù)據(jù)已經(jīng)更新成功


因?yàn)榉?wù)器上安了一流攔截系統(tǒng),所以dede的交替功能不好使.只能手動(dòng)在phpadmin中SQL: 
update dede_addonarticle  set body=replace(body ,'大法','方法')  
 

mysql替換表的字段里面內(nèi)容，如例子：

mysql> select id,type from items limit 10;
+--------+--------+
| id     | type   |
+--------+--------+
|   0001 | 780000 |
|   0002 | 780000 |
|   0003 | 780000 |
|   0004 | 780000 |
|   0005 | 780000 |
| 150419 | 780000 |
| 150420 | 780000 |
| 150421 | 780000 |
| 150422 | 780000 |
| 150423 | 780000 |
+--------+--------+

把type字段中的“78”改成“79” 用replace函數(shù)
 

sql如下：

mysql> update items set type=replace(type,'79','78');

Query OK, 17536 rows affected (0.72 sec)
Rows matched: 17536  Changed: 17536  Warnings: 0 
再查詢：

mysql> select id,type from items limit 10;
+--------+--------+
| id     | type   |
+--------+--------+
|   0001 | 790000 |
|   0002 | 790000 |
|   0003 | 790000 |
|   0004 | 790000 |
|   0005 | 790000 |
| 150419 | 790000 |
| 150420 | 790000 |
| 150421 | 790000 |
| 150422 | 790000 |
| 150423 | 790000 |
+--------+--------+
10 rows in set (0.00 sec)

由查詢結(jié)果到，數(shù)據(jù)已經(jīng)更新成功