SQLSetConnectAttr

SQLSetConnectAttr

函数定义：

用法类似于SQLSetEnvAttr，该函数是设置连接的各项属性用的

SQLRETURN SQLSetConnectAttr(

SQLHDBC     秒超时，连接正常)

rs = SQLSetConnectAttr(hdbc,SQL_ATTR_LOGIN_TIMEOUT,(void*)5,0);

rs_c = SQLConnect(hdbc,(UCHAR*)szDSN,SQL_NTS,(UCHAR*)szUID ,SQL_NTS,(UCHAR*)szAuthStr,SQL_NTS);

2. 设定建立数据库连接(只读)

rs_c = SQLConnect(hdbc,(UCHAR*)szDSN,SQL_NTS,(UCHAR*)szUID ,SQL_NTS,(UCHAR*)szAuthStr,SQL_NTS);

rs = SQLSetConnectAttr(hdbc,SQL_ATTR_ACCESS_MODE,(void*)SQL_MODE_READ_ONLY,0);

3. 设定连接异步属性(关闭异步)

rs_c = SQLConnect(hdbc,(UCHAR*)szDSN,SQL_NTS,(UCHAR*)szUID ,SQL_NTS,(UCHAR*)szAuthStr,SQL_NTS);

rs = SQLSetConnectAttr(hdbc,SQL_ATTR_ASYNC_ENABLE,(void*)SQL_ASYNC_ENABLE_OFF,0);

4. 设定连接自动提交属性(自动提交)

rs_c = SQLConnect(hdbc,(UCHAR*)szDSN,SQL_NTS,(UCHAR*)szUID ,SQL_NTS,(UCHAR*)szAuthStr,SQL_NTS);

rs = SQLSetConnectAttr(hdbc,SQL_ATTR_AUTOCOMMIT,(void*)SQL_AUTOCOMMIT_ON,0);

5. 设定连接请求超时时间(设置 请求超时)

rs_c = SQLConnect(hdbc,(UCHAR*)szDSN,SQL_NTS,(UCHAR*)szUID ,SQL_NTS,(UCHAR*)szAuthStr,SQL_NTS);

rs = SQLSetConnectAttr(hdbc,SQL_ATTR_CONNECTION_TIMEOUT,(void*)3600,0);

6. 设定连接当前库(设置 当前库)

rs_c = SQLConnect(hdbc,(UCHAR*)szDSN,SQL_NTS,(UCHAR*)szUID ,SQL_NTS,(UCHAR*)szAuthStr,SQL_NTS);

rs = SQLSetConnectAttr(hdbc,SQL_ATTR_CURRENT_CATALOG,(void*)"SYSTEM",SQL_NTS);

7. 设定连接CATALOG函数参数(设置启用标识符)

rs_c = SQLConnect(hdbc,(UCHAR*)szDSN,SQL_NTS,(UCHAR*)szUID ,SQL_NTS,(UCHAR*)szAuthStr,SQL_NTS);

rs = SQLSetConnectAttr(hdbc,SQL_ATTR_METADATA_ID,(void*)SQL_FALSE,0);

8. 设定连接游标参数(设置启用游标据需要)

rs = SQLSetConnectAttr(hdbc,SQL_ATTR_ODBC_CURSORS,(void*)SQL_CUR_USE_IF_NEEDED,0);

rs_c = SQLConnect(hdbc,(UCHAR*)szDSN,SQL_NTS,(UCHAR*)szUID ,SQL_NTS,(UCHAR*)szAuthStr,SQL_NTS);

9. 设定连接游标参数(设置启用ODBC游标)

rs = SQLSetConnectAttr(hdbc,SQL_ATTR_ODBC_CURSORS,(void*)SQL_CUR_USE_ODBC,0);

rs_c = SQLConnect(hdbc,(UCHAR*)szDSN,SQL_NTS,(UCHAR*)szUID ,SQL_NTS,(UCHAR*)szAuthStr,SQL_NTS);

10. 设定连接游标参数(设置启用驱动游标)

rs = SQLSetConnectAttr(hdbc,SQL_ATTR_ODBC_CURSORS,(void*)SQL_CUR_USE_DRIVER,0);

rs_c = SQLConnect(hdbc,(UCHAR*)szDSN,SQL_NTS,(UCHAR*)szUID ,SQL_NTS,(UCHAR*)szAuthStr,SQL_NTS);

11. 设定连接包大小(设置包大小)

rs = SQLSetConnectAttr(hdbc,SQL_ATTR_PACKET_SIZE,(void*)2000,0);

rs_c = SQLConnect(hdbc,(UCHAR*)szDSN,SQL_NTS,(UCHAR*)szUID ,SQL_NTS,(UCHAR*)szAuthStr,SQL_NTS);

12. 设定连接对话框(设置空指针句柄）

rs_c = SQLConnect(hdbc,(UCHAR*)szDSN,SQL_NTS,(UCHAR*)szUID ,SQL_NTS,(UCHAR*)szAuthStr,SQL_NTS);

rs = SQLSetConnectAttr(hdbc,SQL_ATTR_QUIET_MODE,(void*)NULL,0);

13. 设定连接包对话框(设置句柄）

rs_c = SQLConnect(hdbc,(UCHAR*)szDSN,SQL_NTS,(UCHAR*)szUID ,SQL_NTS,(UCHAR*)szAuthStr,SQL_NTS);

rs = SQLSetConnectAttr(hdbc,SQL_ATTR_QUIET_MODE,(void*)ht,0);

14. 设定连接不启用跟踪(设置不启用）

rs_c = SQLConnect(hdbc,(UCHAR*)szDSN,SQL_NTS,(UCHAR*)szUID ,SQL_NTS,(UCHAR*)szAuthStr,SQL_NTS);

rs = SQLSetConnectAttr(hdbc,SQL_ATTR_TRACE,(void*)SQL_OPT_TRACE_OFF,0);

15. 设定连接启用跟踪（设置启用）

rs_c = SQLConnect(hdbc,(UCHAR*)szDSN,SQL_NTS,(UCHAR*)szUID ,SQL_NTS,(UCHAR*)szAuthStr,SQL_NTS);

rs = SQLSetConnectAttr(hdbc,SQL_ATTR_TRACE,(void*)SQL_OPT_TRACE_ON,0);

16. 设定连接跟踪路径(设置路径）

rs_c = SQLConnect(hdbc,(UCHAR*)szDSN,SQL_NTS,(UCHAR*)szUID ,SQL_NTS,(UCHAR*)szAuthStr,SQL_NTS);

rs = SQLSetConnectAttr(hdbc,SQL_ATTR_TRACEFILE,(void*)"PATH",SQL_NTS);

17. 设置连接转化字符集的动态库路径

rs_c = SQLConnect(hdbc,(UCHAR*)szDSN,SQL_NTS,(UCHAR*)szUID ,SQL_NTS,(UCHAR*)szAuthStr,SQL_NTS);

rs = SQLSetConnectAttr(hdbc,SQL_ATTR_TRANSLATE_LIB,(void*)"PATH_DLL_NAME",SQL_NTS);

18. 设置连接转化字符集的参数

rs_c = SQLConnect(hdbc,(UCHAR*)szDSN,SQL_NTS,(UCHAR*)szUID ,SQL_NTS,(UCHAR*)szAuthStr,SQL_NTS);

rs = SQLSetConnectAttr(hdbc,SQL_ATTR_TRANSLATE_OPTION,(void*)1,0);

19. 设置连接事务隔离级别（读未提交）

rs_c = SQLConnect(hdbc,(UCHAR*)szDSN,SQL_NTS,(UCHAR*)szUID ,SQL_NTS,(UCHAR*)szAuthStr,SQL_NTS);

rs = SQLSetConnectAttr(hdbc,SQL_ATTR_TXN_ISOLATION,(void*)1,0);

20. 设置连接事务隔离级别（读已提交）

rs_c = SQLConnect(hdbc,(UCHAR*)szDSN,SQL_NTS,(UCHAR*)szUID ,SQL_NTS,(UCHAR*)szAuthStr,SQL_NTS);

rs = SQLSetConnectAttr(hdbc,SQL_ATTR_TXN_ISOLATION,(void*)2,0);

21. 设置连接事务隔离级别（可重复读）

rs_c = SQLConnect(hdbc,(UCHAR*)szDSN,SQL_NTS,(UCHAR*)szUID ,SQL_NTS,(UCHAR*)szAuthStr,SQL_NTS);

rs = SQLSetConnectAttr(hdbc,SQL_ATTR_TXN_ISOLATION,(void*)4,0);

22. 设置连接事务隔离级别（串行化）

rs_c = SQLConnect(hdbc,(UCHAR*)szDSN,SQL_NTS,(UCHAR*)szUID ,SQL_NTS,(UCHAR*)szAuthStr,SQL_NTS);

rs = SQLSetConnectAttr(hdbc,SQL_ATTR_TXN_ISOLATION,(void*)8,0);