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Posted to notifications@shardingsphere.apache.org by "FlyingZC (via GitHub)" <gi...@apache.org> on 2023/08/02 09:25:28 UTC
[GitHub] [shardingsphere] FlyingZC opened a new issue, #27761: Support parsing openGauss SELECT sql
FlyingZC opened a new issue, #27761:
URL: https://github.com/apache/shardingsphere/issues/27761
# Background
Hi community,
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 openGauss SQL parsing in ShardingSphere.
More details:
https://shardingsphere.apache.org/document/current/en/reference/sharding/parse/
# Task
This issue is to support more openGauss sql parse, as follows:
```sql
SELECT CAST(40 AS bigint) ! AS "40 factorial";
```
```sql
SELECT @ '-4.5' AS "abs";
```
```sql
SHOW COLLATION LIKE 'aa%';
```
```sql
SQLRETURN SQLConnect(SQLHDBC ConnectionHandle,
SQLCHAR *ServerName,
SQLSMALLINT NameLength1,
SQLCHAR *UserName,
SQLSMALLINT NameLength2,
SQLCHAR *Authentication,
SQLSMALLINT NameLength3);
```
```sql
-- 创建函数
opengauss=# CREATE FUNCTION func_add_sql(integer, integer) RETURNS integer AS 'select $1 + $2;' LANGUAGE SQL IMMUTABLE RETURNS NULL ON NULL INPUT;
CREATE FUNCTION
opengauss=# show function status like 'func_add_s%';
```
# Process
1. First confirm that this is a correct openGauss sql syntax, if not please leave a message under the issue and ignore it;
2. Compare SQL definitions in Official 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 Statement 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 openGauss SQLs
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Re: [I] Support parsing openGauss SELECT sql [shardingsphere]
Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on issue #27761:
URL: https://github.com/apache/shardingsphere/issues/27761#issuecomment-1783911725
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 openGauss SELECT sql [shardingsphere]
Posted by "FlyingZC (via GitHub)" <gi...@apache.org>.
FlyingZC closed issue #27761: Support parsing openGauss SELECT sql
URL: https://github.com/apache/shardingsphere/issues/27761
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[GitHub] [shardingsphere] github-actions[bot] commented on issue #27761: Support parsing openGauss SELECT sql
Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on issue #27761:
URL: https://github.com/apache/shardingsphere/issues/27761#issuecomment-1703268092
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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