mysql用concat更新REPLACE

Question

my table save same ID like that : 123,9901,888,99

I need change some id in this field

I using my sql : let 9901 change to 2001

UPDATE `TALBE_` SET id_group = REPLACE (id_group, '9901', '2001');

That's work

but, I change 99 to 100

UPDATE `TALBE_` SET id_group = REPLACE (id_group, '99', '100');

My sql fidle had changed to

123, 10001 ,888, 100

how to just change 99 -> 100, dont change 9901?

Do I need use concat?

But I test some time still cant do that

Answer 1

You can use eg

UPDATE `TALBE_` SET id_group = 
    trim(',' from REPLACE(concat(',', id_group, ','), ',99,', ',100,')); 

Answer 2

her a version that seeks the number a replace it

You must insert the search value 2 times

SELECT CONCAT_WS (',',
      SUBSTRING_INDEX(id_group, ',', FIND_IN_SET('888',id_group)-1)
      ,'100',
      SUBSTRING_INDEX(id_group, ',', --1* (LENGTH(REGEXP_REPLACE(id_group,'[0-9]','')) -(FIND_IN_SET('888',id_group)-1)))
      );

Sample

MariaDB [(none)]> SELECT CONCAT_WS (',',
    ->       SUBSTRING_INDEX('123,9901,888,99', ',', FIND_IN_SET('888','123,9901,888,99')-1)
    ->       ,'100',
    ->       SUBSTRING_INDEX('123,9901,888,99', ',', --1* (LENGTH(REGEXP_REPLACE('123,9901,888,99','[0-9]','')) -(FIND_IN_SET('888','123,9901,888,99')-1)))
    ->       );
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| CONCAT_WS (',',
      SUBSTRING_INDEX('123,9901,888,99', ',', FIND_IN_SET('888','123,9901,888,99')-1)
      ,'100',
      SUBSTRING_INDEX('123,9901,888,99', ',', --1* (LENGTH(REGEXP_REPLACE('123,9901,888,99','[0-9]','')) -(FIND_IN_SET('888','123,9901,888,9 |
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| 123,9901,100,123                                                                                                                                                                                                                                                 |
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)

MariaDB [(none)]>