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Posted to notifications@shardingsphere.apache.org by "FlyingZC (via GitHub)" <gi...@apache.org> on 2023/07/13 08:14:24 UTC

[GitHub] [shardingsphere] FlyingZC opened a new issue, #27147: Support parsing Oracle EXPLAIN PLAN sql

FlyingZC opened a new issue, #27147:
URL: https://github.com/apache/shardingsphere/issues/27147

   # Background
   Hi community,
   This issue is for #26878.
   
   ShardingSphere parser engine helps users parse a SQL to get the AST (Abstract Syntax Tree) and visit this tree to get SQLStatement (Java Object). Currently, we are planning to enhance the support for Oracle SQL parsing in ShardingSphere.
   
   More details:
   https://shardingsphere.apache.org/document/current/en/reference/sharding/parse/
   
   # Task
   This issue is to support more oracle sql parse, as follows:
   ```sql
   EXPLAIN PLAN FOR 
     SELECT * FROM emp_range;
   ```
   
   ```sql
   EXPLAIN PLAN FOR 
     SELECT * FROM emp_comp;
   ```
   
   ```sql
   EXPLAIN PLAN FOR 
   select /*+ result_cache */ deptno, avg(sal) 
   from emp 
   group by deptno;
   ```
   
   ```sql
   FLASHBACK DATABASE TO RESTORE POINT 'before_upgrade';
   FLASHBACK DATABASE TO SCN 202381;
   ```
   
   ```sql
   EXPLAIN PLAN FOR SELECT * FROM v_emp_job_history;
   ```
   
   # Process
   1. First confirm that this is a correct oracle sql syntax, if not please ignore;
   2. Compare SQL definitions in Oficial SQL Doc and ShardingSphere SQL Doc;
   3. If there is any difference in ShardingSphere SQL Doc, please correct them by referring to the Official SQL Doc;
   4. Run mvn install the current_file_module;
   5. Check whether there are any exceptions. If indeed, please fix them. (Especially xxxVisitor.class);
   6. Add new corresponding SQL case in SQL Cases and expected parsed result in Expected Statment XML;
   7. Run SQLParserParameterizedTest to make sure no exceptions.
   
   # Relevant Skills
   1. Master JAVA language
   2. Have a basic understanding of Antlr `g4` file
   3. Be familiar with Oracle SQLs


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[GitHub] [shardingsphere] github-actions[bot] commented on issue #27147: Support parsing Oracle EXPLAIN PLAN sql

Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on issue #27147:
URL: https://github.com/apache/shardingsphere/issues/27147#issuecomment-1676080399

   There hasn't been any activity on this issue recently, and in order to prioritize active issues, it will be marked as stale.


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Re: [I] Support parsing Oracle EXPLAIN PLAN sql [shardingsphere]

Posted by "strongduanmu (via GitHub)" <gi...@apache.org>.
strongduanmu closed issue #27147: Support parsing Oracle EXPLAIN PLAN sql
URL: https://github.com/apache/shardingsphere/issues/27147


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Re: [I] Support parsing Oracle EXPLAIN PLAN sql [shardingsphere]

Posted by "kanha-gupta (via GitHub)" <gi...@apache.org>.
kanha-gupta commented on issue #27147:
URL: https://github.com/apache/shardingsphere/issues/27147#issuecomment-1882374398

   Assign
   


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Re: [I] Support parsing Oracle EXPLAIN PLAN sql [shardingsphere]

Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on issue #27147:
URL: https://github.com/apache/shardingsphere/issues/27147#issuecomment-1784212699

   There hasn't been any activity on this issue recently, and in order to prioritize active issues, it will be marked as stale.


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