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Posted to notifications@shardingsphere.apache.org by "FlyingZC (via GitHub)" <gi...@apache.org> on 2023/07/13 08:09:17 UTC
[GitHub] [shardingsphere] FlyingZC opened a new issue, #27096: Support parsing Oracle CREATE TABLE sql
FlyingZC opened a new issue, #27096:
URL: https://github.com/apache/shardingsphere/issues/27096
# 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
CREATE TABLE docs (
docid NUMBER,
pub_date DATE,
author VARCHAR2(30),
category VARCHAR2(30),
document CLOB
);
```
```sql
CREATE TABLE emp_load (first_name CHAR(15),
last_name CHAR(20),
year_of_birth INT,
phone CHAR(12),
area_code CHAR(3),
exchange CHAR(3),
extension CHAR(4))
ORGANIZATION EXTERNAL
(TYPE ORACLE_LOADER
DEFAULT DIRECTORY ext_tab_dir
ACCESS PARAMETERS
(FIELDS RTRIM
(first_name (1:15) CHAR(15),
last_name (*:+20),
year_of_birth (36:39),
phone (40:52),
area_code (*-12: +3),
exchange (*+1: +3),
extension (*+1: +4)))
LOCATION ('info.dat'));
```
```sql
CREATE TABLE emp_load (first_name CHAR(15), last_name CHAR(20),
year_of_birth CHAR(4))
ORGANIZATION EXTERNAL (TYPE ORACLE_LOADER DEFAULT DIRECTORY ext_tab_dir
ACCESS PARAMETERS (FIELDS LTRIM)
LOCATION ('info.dat'));
```
```sql
CREATE TABLE emp_load (first_name CHAR(15), last_name CHAR(20), year_of_birth CHAR(4))
ORGANIZATION EXTERNAL (TYPE ORACLE_LOADER DEFAULT DIRECTORY ext_tab_dir
ACCESS PARAMETERS (RECORDS DELIMITED BY '|' FIELDS TERMINATED BY ','
(first_name CHAR(7),
last_name CHAR(8),
year_of_birth CHAR(4)))
LOCATION ('info.dat'));
```
```sql
CREATE TABLE emp_load (first_name CHAR(15), last_name CHAR(20), year_of_birth CHAR(4))
ORGANIZATION EXTERNAL (TYPE ORACLE_LOADER DEFAULT DIRECTORY ext_tab_dir
ACCESS PARAMETERS (RECORDS FIXED 20 FIELDS (first_name CHAR(7),
last_name CHAR(8),
year_of_birth CHAR(4)))
LOCATION ('info.dat'));
```
# 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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Re: [I] Support parsing Oracle CREATE TABLE sql [shardingsphere]
Posted by "terrymanu (via GitHub)" <gi...@apache.org>.
terrymanu closed issue #27096: Support parsing Oracle CREATE TABLE sql
URL: https://github.com/apache/shardingsphere/issues/27096
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Re: [I] Support parsing Oracle CREATE TABLE sql [shardingsphere]
Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on issue #27096:
URL: https://github.com/apache/shardingsphere/issues/27096#issuecomment-1784213078
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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[GitHub] [shardingsphere] github-actions[bot] commented on issue #27096: Support parsing Oracle CREATE TABLE sql
Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on issue #27096:
URL: https://github.com/apache/shardingsphere/issues/27096#issuecomment-1676080729
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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