[GitHub] [shardingsphere] RaigorJiang opened a new pull request, #21647: Dev 19814

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

RaigorJiang opened a new pull request, #21647:
URL: https://github.com/apache/shardingsphere/pull/21647

   Fixes #19814.
   
   ### Before
   ```sql
   postgres=> select * from t_order;
   ERROR:  Cannot invoke "org.apache.shardingsphere.infra.metadata.database.schema.decorator.model.ShardingSphereSchema.getVisibleColumnNames(String)" because the return value of "java.util.Map.get(Object)" is null
   ```
   
   ### After
   ```sql
   postgres=> select * from t_order;
   ERROR:  Schema `public` does not exist.
   ```
   
   Changes proposed in this pull request:
     - Check schema exists before use it
     - Add test case
   ---
   
   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 : `mvn clean install -B -T2C -DskipTests -Dmaven.javadoc.skip=true -e`.
   - [ ] I have made corresponding changes to the documentation.
   - [x] I have added corresponding unit tests for my changes.
   


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[GitHub] [shardingsphere] yx9o merged pull request #21647: Fix null exception for #19814

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

yx9o merged PR #21647:
URL: https://github.com/apache/shardingsphere/pull/21647


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