Juan Pan created COMDEV-399:
-------------------------------
Summary: 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
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
-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:panj...@apache.org]
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscr...@community.apache.org
For additional commands, e-mail: dev-h...@community.apache.org
