controler le nombre d'enregistrement

Salut a tous,
je manipule une bdd access, et j'aurais voulu savoir comment je recupere le nombre d'enregistrements que ma requette ma sorti.
voici mon code
Code:

1 2 3 4 5 CString req; UpdateData(true); req = "select login, password from titi where login='+m_login+' and password='+m_password+'"; UpdateData(false);
merci d'avance

Ca dépend de la technologie d'accès aux données, de l'utilisation ou non des MFC avec ces technologies et le code que tu donnes ne nous renseigne pas là dessus.

DAO ? ODBC ? ADO ? Avec ou sans MFC ?...

alors la connexion se fait en ODBC et j'utilise les mfc

CRecordset::GetRecordCount()

Citation:

SQLRowCount
Conformance

Version Introduced:ODBC 1.0
Standards Compliance:ISO 92

Summary

SQLRowCount returns the number of rows affected by an UPDATE, INSERT, or DELETE statement, an SQL_ADD, SQL_UPDATE_BY_BOOKMARK, or SQL_DELETE_BY_BOOKMARK operation in SQLBulkOperations, or an SQL_UPDATE or SQL_DELETE operation in SQLSetPos.

Syntax

SQLRETURN SQLRowCount(
SQLHSTMTStatementHandle,
SQLINTEGER *RowCountPtr);

Arguments

StatementHandle

[Input]
Statement handle.

RowCountPtr

[Output]
Points to a buffer in which to return a row count. For UPDATE, INSERT, and DELETE statements, for the SQL_ADD, SQL_UPDATE_BY_BOOKMARK, and SQL_DELETE_BY_BOOKMARK operations in SQLBulkOperations, and for the SQL_UPDATE or SQL_DELETE operations in SQLSetPos, the value returned in *RowCountPtr is the number of rows affected by the request or –1 if the number of affected rows is not available.

When SQLExecute, SQLExecDirect, SQLBulkOperations, SQLSetPos, or SQLMoreResults is called, the SQL_DIAG_ROW_COUNT field of the diagnostic data structure is set to the row count, and the row count is cached in an implementation-dependent way. SQLRowCount returns the cached row count value. The cached row count value is valid until the statement handle is set back to the prepared or allocated state, the statement is reexecuted, or SQLCloseCursor is called. Note that if a function has been called since the SQL_DIAG_ROW_COUNT field was set, the value returned by SQLRowCount might be different from the value in the SQL_DIAG_ROW_COUNT field, because the SQL_DIAG_ROW_COUNT field is reset to 0 by any function call.

For other statements and functions, the driver may define the value returned in *RowCountPtr. For example, some data sources may be able to return the number of rows returned by a SELECT statement or a catalog function before fetching the rows.

Note Many data sources cannot return the number of rows in a result set before fetching them; for maximum interoperability, applications should not rely on this behavior.

Returns

SQL_SUCCESS, SQL_SUCCESS_WITH_INFO, SQL_ERROR, or SQL_INVALID_HANDLE.

Diagnostics

When SQLRowCount returns SQL_ERROR or SQL_SUCCESS_WITH_INFO, an associated SQLSTATE value can be obtained by calling SQLGetDiagRec with a HandleType of SQL_HANDLE_STMT and a Handle of StatementHandle. The following table lists the SQLSTATE values commonly returned by SQLRowCount and explains each one in the context of this function; the notation “(DM)” precedes the descriptions of SQLSTATEs returned by the Driver Manager. The return code associated with each SQLSTATE value is SQL_ERROR, unless noted otherwise.

SQLSTATE Error Description
01000 General warning Driver-specific informational message. (Function returns SQL_SUCCESS_WITH_INFO.)
HY000 General error An error occurred for which there was no specific SQLSTATE and for which no implementation-specific SQLSTATE was defined. The error message returned by SQLGetDiagRec in the *MessageText buffer describes the error and its cause.
HY001 Memory allocation error The driver was unable to allocate memory required to support execution or completion of the function.
HY010 Function sequence error (DM) The function was called prior to calling SQLExecute, SQLExecDirect, SQLBulkOperations, or SQLSetPos for the StatementHandle.
(DM) An asynchronously executing function was called for the StatementHandle and was still executing when this function was called.

(DM) SQLExecute, SQLExecDirect, SQLBulkOperations, or SQLSetPos was called for the StatementHandle and returned SQL_NEED_DATA. This function was called before data was sent for all data-at-execution parameters or columns.

HY013 Memory management error The function call could not be processed because the underlying memory objects could not be accessed, possibly because of low memory conditions.
HYT01 Connection timeout expired The connection timeout period expired before the data source responded to the request. The connection timeout period is set through SQLSetConnectAttr, SQL_ATTR_CONNECTION_TIMEOUT.
IM001 Driver does not support this function (DM) The driver associated with the StatementHandle does not support the function.

Comments

If the last SQL statement executed on the statement handle was not an UPDATE, INSERT, or DELETE statement, or the Operation argument in the previous call to SQLBulkOperations was not SQL_ADD, SQL_UPDATE_BY_BOOKMARK, or SQL_DELETE_BY_BOOKMARK, or the Operation argument in the previous call to SQLSetPos was not SQL_UPDATE or SQL_DELETE, the value of *RowCountPtr is driver-defined. For more information, see “Determining the Number of Affected Rows” in Chapter 12, “Updating Data.”

Related Functions

Chercher dans les samples du MSDN il y a QuickView je crois qui est un générateur de requêtes SQL

For information about See
Executing an SQL statement SQLExecDirect
Executing a prepared SQL statement SQLExecute

Citation:

Envoyé par BertrandA

CRecordset::GetRecordCount()

Non c'est DAO et DAO c'est obsolète

Citation:

CRecordset::GetRecordCount()
Non c'est DAO et DAO c'est obsolète

:roll: N'importe quoi !
Les classes MFC DAO sont préfixées CDAO....
CDatabase, CRecordset et CLongBinary constituent le support ODBC dans MFC :
http://msdn.microsoft.com/library/de...28.odbc.29.asp

Bertrand on se calme et on boit frais :D
De toute façon l'auteur ( Johnny ) répond aux abonnés absents alors