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Posted to notifications@shardingsphere.apache.org by "FlyingZC (via GitHub)" <gi...@apache.org> on 2023/08/02 09:21:01 UTC
[GitHub] [shardingsphere] FlyingZC opened a new issue, #27714: Support parsing openGauss #include sql
FlyingZC opened a new issue, #27714:
URL: https://github.com/apache/shardingsphere/issues/27714
# 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
#include <stdlib.h>
#include <stdio.h>
#include <sqlext.h>
#ifdef WIN32
#include <windows.h>
#endif
SQLHENV V_OD_Env; // Handle ODBC environment
SQLHSTMT V_OD_hstmt; // Handle statement
SQLHDBC V_OD_hdbc; // Handle connection
SQLINTEGER V_OD_erg;
int main(int argc,char *argv[])
{
V_OD_erg = SQLAllocHandle(SQL_HANDLE_ENV,SQL_NULL_HANDLE,&V_OD_Env);
if ((V_OD_erg != SQL_SUCCESS) && (V_OD_erg != SQL_SUCCESS_WITH_INFO))
{
printf("Error AllocHandle\n");
exit(0);
}
SQLSetEnvAttr(V_OD_Env, SQL_ATTR_ODBC_VERSION, (void*)SQL_OV_ODBC3, 0);
V_OD_erg = SQLAllocHandle(SQL_HANDLE_DBC, V_OD_Env, &V_OD_hdbc);
if ((V_OD_erg != SQL_SUCCESS) && (V_OD_erg != SQL_SUCCESS_WITH_INFO))
{
SQLFreeHandle(SQL_HANDLE_ENV, V_OD_Env);
exit(0);
}
SQLSetConnectAttr(V_OD_hdbc, SQL_ATTR_AUTOCOMMIT, SQL_AUTOCOMMIT_ON, 0);
V_OD_erg = SQLConnect(V_OD_hdbc, (SQLCHAR*) "gaussdb", SQL_NTS,
(SQLCHAR*) "userName", SQL_NTS, (SQLCHAR*) "password", SQL_NTS);
if ((V_OD_erg != SQL_SUCCESS) && (V_OD_erg != SQL_SUCCESS_WITH_INFO))
{
printf("Error SQLConnect %d\n",V_OD_erg);
SQLFreeHandle(SQL_HANDLE_ENV, V_OD_Env);
exit(0);
}
printf("Connected !\n");
SQLSetStmtAttr(V_OD_hstmt,SQL_ATTR_QUERY_TIMEOUT,(SQLPOINTER *)3,0);
SQLAllocHandle(SQL_HANDLE_STMT, V_OD_hdbc, &V_OD_hstmt);
// 1. 执行删除操作
SQLExecDirect(V_OD_hstmt,"delete from customer_t1 where c_customer_name = 'li'",SQL_NTS);
// 2. 断开数据源连接并释放句柄资源
SQLFreeHandle(SQL_HANDLE_STMT,V_OD_hstmt);
SQLDisconnect(V_OD_hdbc);
SQLFreeHandle(SQL_HANDLE_DBC,V_OD_hdbc);
SQLFreeHandle(SQL_HANDLE_ENV, V_OD_Env);
return(0);
```
```sql
DROP DATABASE [ IF EXISTS ] database_name ;
```
```sql
select '1'::json;select '-1.5'::json;select '-1.5e-5'::jsonb, '-1.5e+2'::jsonb;select '001'::json, '+15'::json, 'NaN'::json;
```
```sql
select 'true'::json;select 'false'::jsonb;
```
```sql
select '"a"'::json;select '"abc"'::jsonb;
```
# 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 #include sql [shardingsphere]
Posted by "FlyingZC (via GitHub)" <gi...@apache.org>.
FlyingZC closed issue #27714: Support parsing openGauss #include <stdlib.h> sql
URL: https://github.com/apache/shardingsphere/issues/27714
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[GitHub] [shardingsphere] github-actions[bot] commented on issue #27714: Support parsing openGauss #include sql
Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on issue #27714:
URL: https://github.com/apache/shardingsphere/issues/27714#issuecomment-1703269521
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 #include sql [shardingsphere]
Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on issue #27714:
URL: https://github.com/apache/shardingsphere/issues/27714#issuecomment-1783912009
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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