codebreach commented on issue #6718:
URL: 
https://github.com/apache/incubator-devlake/issues/6718#issuecomment-1880142452

   ran the following command and should work around. please note that theres a 
max key length of 3072 bytes (by default?)
   which means the max length of the id column can only be 3072/4 ~ 767 
characters ascii
   
   ```log
   mysql> ALTER TABLE refs MODIFY COLUMN id VARCHAR(10240);
   ERROR 1071 (42000): Specified key was too long; max key length is 3072 bytes
   mysql> ALTER TABLE refs MODIFY COLUMN id VARCHAR(3072);
   ERROR 1071 (42000): Specified key was too long; max key length is 3072 bytes
   mysql> ALTER TABLE refs MODIFY COLUMN id VARCHAR(3071);
   ERROR 1071 (42000): Specified key was too long; max key length is 3072 bytes
   mysql> ALTER TABLE refs MODIFY COLUMN id VARCHAR(767);
   Query OK, 0 rows affected (0.35 sec)
   Records: 0  Duplicates: 0  Warnings: 0
   ```


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