在 SQL Server 中启用查询日志记录

Question

全部，

我正在尝试执行以下代码：

SQLHSTMT stmt = 0;
SQLHDBC hdbc;
SQLLEN cbName, cbTableName = SQL_NTS, cbSchemaName = SQL_NTS;
long id;
int result = 0;
std::wstring query;
SQLWCHAR *qry = NULL, *tname = NULL, *sname = NULL;;
if( pimpl->m_subtype == L"Microsoft SQL Server" || pimpl->m_subtype == L"Sybase" || pimpl->m_subtype == L"ASE" )
    query = L"SELECT object_id FROM sys.objects o, sys.schemas s WHERE s.schema_id = o.schema_id AND o.name = ? AND s.name = ?;";
qry = new SQLWCHAR[query.length() + 2];
tname = new SQLWCHAR[tableName.length() + 2];
sname = new SQLWCHAR[schemaName.length() + 2];
memset( tname, '\0', tableName.length() + 2 );
memset( sname, '\0', schemaName.length() + 2);
uc_to_str_cpy( sname, schemaName );
uc_to_str_cpy( tname, tableName );
memset( qry, '\0', query.length() + 2 );
uc_to_str_cpy( qry, query );
SQLRETURN retcode = SQLAllocHandle( SQL_HANDLE_DBC, m_env, &hdbc );
SQLSMALLINT OutConnStrLen;
retcode = SQLDriverConnect( hdbc, NULL, m_connectString, SQL_NTS, NULL, 0, &OutConnStrLen, SQL_DRIVER_NOPROMPT );
auto dbName = new SQLWCHAR[pimpl->m_dbName.length() + 2];
memset( dbName, '\0', pimpl->m_dbName.length() + 2 );
uc_to_str_cpy( dbName, pimpl->m_dbName );
retcode = SQLSetConnectAttr( hdbc, SQL_ATTR_CURRENT_CATALOG, dbName, SQL_NTS );
delete[]  dbName;
dbName = nullptr;
retcode = SQLAllocHandle( SQL_HANDLE_STMT, hdbc, &stmt );
retcode = SQLPrepare( stmt, qry, SQL_NTS );
SQLSMALLINT dataType[2], decimalDigit[2], nullable[2];
SQLULEN parameterSize[2];
retcode = SQLDescribeParam( stmt, 1, &dataType[0], &parameterSize[0], &decimalDigit[0], &nullable[0] );
retcode = SQLBindParameter( stmt, 1, SQL_PARAM_INPUT, SQL_C_DEFAULT, dataType[0], parameterSize[0], decimalDigit[0], tname, 0, &cbTableName );
retcode = SQLDescribeParam( stmt, 2, &dataType[1], &parameterSize[1], &decimalDigit[1], &nullable[1] );
retcode = SQLBindParameter( stmt, 2, SQL_PARAM_INPUT, SQL_C_DEFAULT, dataType[1], parameterSize[1], decimalDigit[1], sname, 0, &cbSchemaName );
retcode = SQLExecute( stmt );
retcode = SQLBindCol( stmt, 1, SQL_C_SLONG, &id, 100, &cbName );
retcode = SQLFetch( stmt );
if( retcode != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO && retcode != SQL_NO_DATA )
{
    GetErrorMessage( errorMsg, 1, stmt );
    result = 1;
}
else if( retcode == SQL_NO_DATA )
    tableId = 0;
delete[] qry;
qry = NULL;
delete[] tname;
tname = NULL;
delete[] sname;
sname = NULL;

（为清楚起见，省略了错误检查）

执行时，一切都成功了，除了 SQLFetch() 不返回任何行，因此tableId将为 0。

奇怪的是 - 在 SQL Server Studio 中运行查询成功并返回该行。

有人可以解释一下怎么可能吗？

或者更好 - 向我解释如何在要记录的服务器上执行确切的查询。

因为尝试执行Server -> Management -> SQL Logs并选择“当前日志”，所以我只能看到崩溃的查询..

蒂亚！！

是的 - 我正在使用 2008 SQL Server 进行测试。