[GitHub] [shardingsphere] singlemonkey commented on issue #8722: Cannot use LocalDateTime as a sharding key

[GitBox <gi...@apache.org>]

singlemonkey commented on issue #8722:
URL: https://github.com/apache/shardingsphere/issues/8722#issuecomment-749907735


   > yyyy-MM-ddTHH:mm:ss
   
   I have trid but id didn't work."yyyy-MM-ddTHH:mm:ss" will throw a new error "Unknown pattern letter: T" here,i had to set datetime-pattern as "yyyy-MM-dd'T'HH:mm:ss",but the length of 'datetime-pattern' is 21 and the length of  sharding value(localdatetime) is 19,it will throw a "outOfRange" error here:
   ```
    private LocalDateTime parseDateTime(final String value) {
       return LocalDateTime.parse(value.substring(0, dateTimePatternLength), dateTimeFormatter);
   }
   ```
   
   I have saw the other issues but still couldn't find a way to solve this problem.[#8693 ](url)[#8470](url) just reported the same bug and commited code to solve this bug,but is there any solution in the current version?


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