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Posted to notifications@shardingsphere.apache.org by "FlyingZC (via GitHub)" <gi...@apache.org> on 2023/07/13 06:26:48 UTC
[GitHub] [shardingsphere] FlyingZC opened a new issue, #27047: Support parsing Oracle CREATE MATERIALIZED sql
FlyingZC opened a new issue, #27047:
URL: https://github.com/apache/shardingsphere/issues/27047
# 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 oe.orders AS
SELECT order_total
FROM oe.orders@orc1.example.com o
WHERE EXISTS
(SELECT cust_first_name, cust_last_name
FROM oe.customers@orc1.example.com c
WHERE o.customer_id = c.customer_id
AND c.credit_limit > 50)
UNION
SELECT customer_id
FROM oe.orders@orc1.example.com o
WHERE EXISTS
(SELECT cust_first_name, cust_last_name
FROM oe.customers@orc1.example.com c
WHERE o.customer_id = c.customer_id
AND c.account_mgr_id = 30);
```
```sql
CREATE MATERIALIZED VIEW oe.orders REFRESH FAST AS
SELECT * FROM oe.orders@orc1.example.com
WHERE sales_rep_id = 173;
```
```sql
CREATE MATERIALIZED VIEW oe.orders REFRESH FAST FOR UPDATE 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 oe.orders REFRESH WITH ROWID AS
SELECT * FROM oe.orders@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 > 50)
UNION
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.account_mgr_id = 30);
```
# 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 commented on issue #27047:
URL: https://github.com/apache/shardingsphere/issues/27047#issuecomment-1818050861
@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 "chakkk309 (via GitHub)" <gi...@apache.org>.
chakkk309 commented on issue #27047:
URL: https://github.com/apache/shardingsphere/issues/27047#issuecomment-1817844969
Hi, these SQL have already been supported, so maybe we can mark this issue as completed.
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Re: [I] Support parsing Oracle CREATE MATERIALIZED sql [shardingsphere]
Posted by "strongduanmu (via GitHub)" <gi...@apache.org>.
strongduanmu closed issue #27047: Support parsing Oracle CREATE MATERIALIZED sql
URL: https://github.com/apache/shardingsphere/issues/27047
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[GitHub] [shardingsphere] github-actions[bot] commented on issue #27047: Support parsing Oracle CREATE MATERIALIZED sql
Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on issue #27047:
URL: https://github.com/apache/shardingsphere/issues/27047#issuecomment-1676080945
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 "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on issue #27047:
URL: https://github.com/apache/shardingsphere/issues/27047#issuecomment-1785954518
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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