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https://issues.apache.org/jira/browse/COMDEV-385?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17301091#comment-17301091
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Juan Pan commented on COMDEV-385:
---------------------------------
Hi [~FourierX9],
Thanks for your comment.
It is much likely that this topic will be assigned to Thanoshan MV since he
came earlier and still did a nice job at some of the preliminary issues.
However, we plan to publish some similar projects before next Tuesday. If you
are still interested in that, please keep an eye on issues with the prefix `
Apache ShardingSphere:`
Thanks,
Trista
> Apache ShardingSphere: Proofread the DML SQL definitions for ShardingSphere
> Parser
> ----------------------------------------------------------------------------------
>
> Key: COMDEV-385
> URL: https://issues.apache.org/jira/browse/COMDEV-385
> Project: Community Development
> Issue Type: Improvement
> Components: GSoC/Mentoring ideas
> Reporter: Juan Pan
> Priority: Major
> Labels: Mentor, ShardingSphere, gsoc2021
>
> h3. Apache ShardingSphere
> Apache ShardingSphere is a distributed database middleware ecosystem,
> including 2 independent products, ShardingSphere JDBC and ShardingSphere
> Proxy presently. They all provide functions of data sharding, distributed
> transaction, and database orchestration.
> *Page*:
> [https://shardingsphere.apache.org|https://shardingsphere.apache.org/]
> *Github*: [https://github.com/apache/shardingsphere]
> h3. Background
> ShardingSphere parser engine helps users parse a SQL to get the AST (Abstract
> Syntax Tree) and visit this tree to get SQLStatement (Java Object). At
> present, this parser engine can handle SQLs for `MySQL`, `PostgreSQL`,
> `SQLServer` and `Oracle`, which means we have to understand different
> database dialect SQLs.
> *More details*:
> [https://shardingsphere.apache.org/document/current/en/features/sharding/principle/parse/]
> h3. Task
> This issue is to proofread the DML(SELECT/UPDATE/DELETE/INSERT) SQL
> definitions for Oracle. As we have a basic [Oracle SQL syntax
> definitions|https://github.com/apache/shardingsphere/tree/master/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/antlr4/imports/oracle]
> but do not keep in line with [Oracle
> DOC|https://docs.oracle.com/en/database/oracle/oracle-database/19/sqlqr/SQL-Statements.html#GUID-CE009C87-4AA6-45BF-9A0D-2B2C5FFB47B3],
> we need you to find out the vague SQL grammar definitions and correct them
> referring to Oracle DOC.
> *Notice*, when you review these DML(SELECT/UPDATE/DELETE/INSERT) SQLs, you
> will find that these definitions will involve some basic elements of Oracle
> SQL. No doubt, these elements are included in this task as well.
> h3. Relevant Skills
> 1. Master JAVA language
> 2. Have a basic understanding of Antlr g4 file
> 3. Be familiar with Oracle SQLs
> h3. Targets files
> 1. DML SQLs g4 file:
> [https://github.com/apache/shardingsphere/blob/master/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/antlr4/imports/oracle/DMLStatement.g4]
> 2. Basic elements g4 file:
> [https://github.com/apache/shardingsphere/blob/master/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/antlr4/imports/oracle/BaseRule.g4]
> h3. References
> 1. Oracle SQL quick reference:
> [https://docs.oracle.com/en/database/oracle/oracle-database/19/sqlqr/SQL-Statements.html#GUID-1FA35EAD-AED2-4619-BFEE-348FF05D1F4A]
> 2. Detailed Oracle SQL info:
> [https://docs.oracle.com/pls/topic/lookup?ctx=en/database/oracle/oracle-database/19/sqlqr&id=SQLRF008]
> h3. Mentor
> Juan Pan, PMC of Apache ShardingSphere, [mailto:panj...@apache.org]
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