MySQL string segmentation and concatenation statements

SUBSTRING_INDEX and concat can be used to split and splice MYSQL strings. The following describes the usage of the MYSQL string processing statement for your reference.

Split the content of a field and write it to other fields:

The field content is relatively regular, so select the substring_index function and use the concat string link function to effectively cooperate and achieve the final effect.

The telephone number is as follows: 010-88888882-5612

Divide the telephone number into the switchboard and extension number:

 
 

  
  
select SUBSTRING_INDEX(phone,'-',2) as PNumber,   
  
  
       SUBSTRING_INDEX(phone,'-', -1) as Ext,   
  
  
       phone from tb_user   where ucid = 271338 
  
  
 
  
  
+--------------+------+-------------------+  
  
  
| PNumber      | Ext | phone             |  
  
  
+--------------+------+-------------------+  
  
  
| 010-88888882 | 5612 | 010-88888882-5612 |  
  
  
+--------------+------+-------------------+  
 
 

Change extension number to 1234:

 
 

  
  
update tb_user set phone = concat(SUBSTRING_INDEX(phone,'-',2),'-','1234')  
  
  
where ucid = 271338 ; 
 
 

The preceding MYSQL string segmentation and concatenation statements are described.

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