bcp_readfmt
Reads a data file format definition from the specified format file.
구문
RETCODE bcp_readfmt (
HDBC hdbc,
LPCTSTR szFormatFile);
Arguments
- hdbc
Is the bulk copy-enabled ODBC connection handle.
- szFormatFile
Is the path and file name of the file containing the format values for the data file.
Returns
SUCCEED or FAIL.
주의
After bcp_readfmt reads the format values, it makes the appropriate calls to bcp_columns and bcp_colfmt. There is no need for you to parse a format file and make these calls.
To persist a format file, call bcp_writefmt. Calls to bcp_readfmt can reference saved formats. For more information, see bcp_init.
Alternately, the bulk-copy utility (bcp) can save user-defined data formats in files that can be referenced by bcp_readfmt. For more information about the bcp utility and the structure of bcp data format files, see 서식 파일 작업.
[!참고] The format file must have been produced by version 4.2 or later of the bcp utility.
Example
// Variables like henv not specified.
HDBC hdbc;
DBINT nRowsProcessed;
// Application initiation, get an ODBC environment handle, allocate the
// hdbc, and so on.
...
// Enable bulk copy prior to connecting on allocated hdbc.
SQLSetConnectAttr(hdbc, SQL_COPT_SS_BCP, (SQLPOINTER) SQL_BCP_ON,
SQL_IS_INTEGER);
// Connect to the data source, return on error.
if (!SQL_SUCCEEDED(SQLConnect(hdbc, _T("myDSN"), SQL_NTS,
_T("myUser"), SQL_NTS, _T("myPwd"), SQL_NTS)))
{
// Raise error and return.
return;
}
// Initialize bulk copy.
if (bcp_init(hdbc, _T("myTable"), _T("myData.csv"),
_T("myErrors"), DB_IN) == FAIL)
{
// Raise error and return.
return;
}
if (bcp_readfmt(hdbc, _T("myFmtFile.fmt")) == FAIL)
{
// Raise error and return.
return;
}
if (bcp_exec(hdbc, &nRowsProcessed) == SUCCEED)
{
printf("%ld rows copied to SQL Server\n", nRowsProcessed);
}
// Carry on.