How To Set HANA ODBC Connection Properties

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本文介绍如何通过示例代码设置ODBC连接属性，包括请求空间类型支持等操作。使用SQL函数进行环境句柄分配及设置ODBC版本，并通过SQLDriverConnect函数完成连接字符串配置。

How To Set ODBC Connection Properties

In this example, spatial type support is requested by passing "SPATIALTYPES = 1" as part of the connection string.

The following example shows how to set ODBC connection properties:

SQLHENV henv;
    SQLHDBC hdbc;
    SQLRETURN rc;
    SQLCHAR outString[1024];
    SQLSMALLINT outLength;
    rc = SQLAllocHandle( SQL_HANDLE_ENV, SQL_NULL_HANDLE, &henv );
    rc = SQLSetEnvAttr( henv, SQL_ATTR_ODBC_VERSION, (void*)SQL_OV_ODBC3, 0);
    rc = SQLAllocHandle( SQL_HANDLE_DBC, henv, &hdbc );
    rc = SQLDriverConnect( hdbc, henv, (SQLCHAR *)"uid=SYSTEM;pwd=manager;SPATIALTYPES=1", SQL_NTS, outString, sizeof(outString), &outLength, 
SQL_DRIVER_NOPROMPT);