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Posted to notifications@shardingsphere.apache.org by "FlyingZC (via GitHub)" <gi...@apache.org> on 2023/07/13 06:25:53 UTC
[GitHub] [shardingsphere] FlyingZC opened a new issue, #27037: Support parsing Oracle CREATE MATERIALIZED sql
FlyingZC opened a new issue, #27037:
URL: https://github.com/apache/shardingsphere/issues/27037
# 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 cal_month_sales_mv
BUILD IMMEDIATE
REFRESH FORCE
ENABLE QUERY REWRITE AS
SELECT t.calendar_month_desc, SUM(s.amount_sold) AS dollars
FROM sales s, times t WHERE s.time_id = t.time_id
GROUP BY t.calendar_month_desc;
```
```sql
CREATE MATERIALIZED VIEW cal_month_sales_mv
ENABLE QUERY REWRITE AS
SELECT t.calendar_month_desc, SUM(s.amount_sold) AS dollars
FROM sales s, times t WHERE s.time_id = t.time_id
GROUP BY t.calendar_month_desc;
```
```sql
CREATE MATERIALIZED VIEW catalog
REFRESH FAST START WITH SYSDATE NEXT SYSDATE + 1/4096
WITH PRIMARY KEY
AS SELECT * FROM product_information;
```
```sql
CREATE MATERIALIZED VIEW credit_mv1
ENABLE QUERY REWRITE
AS SELECT cust_last_name, cust_first_name,
cust_credit_limit, cust_year_of_birth
FROM customers
WHERE cust_credit_limit BETWEEN 1000 AND 5000
AND cust_year_of_birth BETWEEN 1945 AND 1950;
CREATE MATERIALIZED VIEW credit_mv2
ENABLE QUERY REWRITE
AS SELECT cust_last_name, cust_first_name,
cust_credit_limit, cust_year_of_birth
FROM customers
WHERE cust_credit_limit > 5000
AND cust_credit_limit <= 10000 AND cust_year_of_birth
BETWEEN 1945 AND 1960;
CREATE MATERIALIZED VIEW credit_mv3
ENABLE QUERY REWRITE AS
SELECT cust_last_name, cust_first_name,
cust_credit_limit, cust_year_of_birth
FROM customers
WHERE cust_credit_limit BETWEEN 1000 AND 5000
AND cust_year_of_birth > 1950 AND cust_year_of_birth <= 1955;
```
```sql
CREATE MATERIALIZED VIEW hr.emp_hierarchy AS
SELECT LPAD(' ', 4*(LEVEL-1))||email USERNAME
FROM hr.employees@orc1.example.com START WITH manager_id IS NULL
CONNECT BY PRIOR employee_id = manager_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 #27037: Support parsing Oracle CREATE MATERIALIZED sql
URL: https://github.com/apache/shardingsphere/issues/27037
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[GitHub] [shardingsphere] github-actions[bot] commented on issue #27037: Support parsing Oracle CREATE MATERIALIZED sql
Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on issue #27037:
URL: https://github.com/apache/shardingsphere/issues/27037#issuecomment-1676081022
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 "chakkk309 (via GitHub)" <gi...@apache.org>.
chakkk309 commented on issue #27037:
URL: https://github.com/apache/shardingsphere/issues/27037#issuecomment-1951316056
Hi, I have checked these SQL have already been supported, which was fixed by pr #30147.
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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 #27037:
URL: https://github.com/apache/shardingsphere/issues/27037#issuecomment-1951488342
@chakkk309 Thank you for testing this case, 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 #27037:
URL: https://github.com/apache/shardingsphere/issues/27037#issuecomment-1785954922
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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