linghengqian opened a new pull request, #29975:
URL: https://github.com/apache/shardingsphere/pull/29975

   Fixes #28909.
   
   Changes proposed in this pull request:
     - Make IntervalShardingAlgorithm loosely match `String`. Prior to this PR, 
`org.apache.shardingsphere.sharding.algorithm.sharding.datetime.IntervalShardingAlgorithm`
 did not consider the case where the string length of the shard key was smaller 
than `datetime-pattern` after the shard key was formatted as 
`java.lang.String`. This PR further attempts to use a substring of 
`datetime-pattern` to parse shard keys.
   
   ---
   
   Before committing this PR, I'm sure that I have checked the following 
options:
   - [x] My code follows the [code of 
conduct](https://shardingsphere.apache.org/community/en/involved/conduct/code/) 
of this project.
   - [x] I have self-reviewed the commit code.
   - [x] I have (or in comment I request) added corresponding labels for the 
pull request.
   - [x] I have passed maven check locally : `./mvnw clean install -B -T1C 
-Dmaven.javadoc.skip -Dmaven.jacoco.skip -e`.
   - [ ] I have made corresponding changes to the documentation.
   - [x] I have added corresponding unit tests for my changes.
   


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