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Posted to dev@community.apache.org by "Juan Pan (Jira)" <ji...@apache.org> on 2021/02/18 08:05:00 UTC
[jira] [Comment Edited] (COMDEV-399) Apache ShardingSphere:
Proofread the DDL/TCL SQL definitions for ShardingSphere Parser
[ https://issues.apache.org/jira/browse/COMDEV-399?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17286332#comment-17286332 ]
Juan Pan edited comment on COMDEV-399 at 2/18/21, 8:04 AM:
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Hi anyone who are interested in this one,
If you want to have a preliminary task, [#9426|https://github.com/apache/shardingsphere/issues/9426] will be a good one. Please comment on #9426 to let me know.
Plus, suppose you want to take this one as your GSoC 2021, please comment here.
Best wishes,
Trista
was (Author: panjuan):
Hi anyone who are interested in this one,
If you want to have a preliminary task, [#9426|https://github.com/apache/shardingsphere/issues/9426] will be a good one.
> Apache ShardingSphere: Proofread the DDL/TCL SQL definitions for ShardingSphere Parser
> --------------------------------------------------------------------------------------
>
> Key: COMDEV-399
> URL: https://issues.apache.org/jira/browse/COMDEV-399
> Project: Community Development
> Issue Type: Improvement
> Components: GSoC/Mentoring ideas
> Reporter: Juan Pan
> Priority: Major
> Labels: ShardingSphere, gsoc2021, mentor
>
> 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 following definitions,
> - All the DDL SQL definitions for Oracle *except for* ALTER, DROP, CREATE and TRUNCATE.
> - All the TCL (Transaction Control Language) SQL definitions for Oracle
> - ALTER SYSTEM
> You can *learn more* [here|https://docs.oracle.com/en/database/oracle/oracle-database/19/sqlrf/Types-of-SQL-Statements.html#GUID-2E008D4A-F6FD-4F34-9071-7E10419CA24D].
> 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 target SQLs above, 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. DDL 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/DDLStatement.g4]
> 2. TCL 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/TCLStatement.g4]
> 3. 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:panjuan@apache.org]
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