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Posted to notifications@shardingsphere.apache.org by "FlyingZC (via GitHub)" <gi...@apache.org> on 2023/07/13 06:26:25 UTC
[GitHub] [shardingsphere] FlyingZC opened a new issue, #27043: Support parsing Oracle CREATE MATERIALIZED sql
FlyingZC opened a new issue, #27043:
URL: https://github.com/apache/shardingsphere/issues/27043
# 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 MATERIALIZED VIEW hr.employees
AS SELECT * FROM hr.employees@orc1.example.com;
```
```sql
CREATE MATERIALIZED VIEW hr.employees REFRESH FAST FOR UPDATE AS
SELECT * FROM hr.employees@reg_uk.example.com e
WHERE EXISTS
(SELECT * FROM hr.departments@reg_uk.example.com d
WHERE e.department_id = d.department_id
AND EXISTS
(SELECT * FROM hr.locations@reg_uk.example.com l
WHERE l.city = 'London'
AND d.location_id = l.location_id));
```
```sql
CREATE MATERIALIZED VIEW hr.mview_employees AS
SELECT employees.employee_id, employees.email
FROM hr.employees@orc1.example.com
UNION ALL
SELECT new_employees.employee_id, new_employees.email
FROM hr.new_employees@orc1.example.com;
```
```sql
CREATE MATERIALIZED VIEW oe.orders REFRESH FAST AS
SELECT * FROM oe.orders@orc1.example.com o
WHERE EXISTS
(SELECT * FROM oe.customers@orc1.example.com c
WHERE o.customer_id = c.customer_id AND c.credit_limit > 10000);
```
```sql
CREATE MATERIALIZED VIEW join_sales_time_product_mv
ENABLE QUERY REWRITE AS
SELECT p.prod_id, p.prod_name, t.time_id, t.week_ending_day,
s.channel_id, s.promo_id, s.cust_id, s.amount_sold
FROM sales s, products p, times t
WHERE s.time_id=t.time_id AND s.prod_id = p.prod_id;
```
# 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 MATERIALIZED sql [shardingsphere]
Posted by "strongduanmu (via GitHub)" <gi...@apache.org>.
strongduanmu closed issue #27043: Support parsing Oracle CREATE MATERIALIZED sql
URL: https://github.com/apache/shardingsphere/issues/27043
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Re: [I] Support parsing Oracle CREATE MATERIALIZED sql [shardingsphere]
Posted by "chakkk309 (via GitHub)" <gi...@apache.org>.
chakkk309 commented on issue #27043:
URL: https://github.com/apache/shardingsphere/issues/27043#issuecomment-1817472464
Hi, we have already supported these SQL~
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Re: [I] Support parsing Oracle CREATE MATERIALIZED sql [shardingsphere]
Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on issue #27043:
URL: https://github.com/apache/shardingsphere/issues/27043#issuecomment-1865067536
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 #27043: Support parsing Oracle CREATE MATERIALIZED sql
Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on issue #27043:
URL: https://github.com/apache/shardingsphere/issues/27043#issuecomment-1676080975
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 CREATE MATERIALIZED sql [shardingsphere]
Posted by "strongduanmu (via GitHub)" <gi...@apache.org>.
strongduanmu commented on issue #27043:
URL: https://github.com/apache/shardingsphere/issues/27043#issuecomment-1865429019
@chakkk309 Thank you for your test, I will close this issue.
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Re: [I] Support parsing Oracle CREATE MATERIALIZED sql [shardingsphere]
Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on issue #27043:
URL: https://github.com/apache/shardingsphere/issues/27043#issuecomment-1785954701
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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