SQLDISCONNECT( ) Function

  • Artículo

Terminates a connection to a data source.

SQLDISCONNECT(nConnectionHandle)

Return Values

Numeric

Parameters

  • nConnectionHandle
    Specifies the connection handle to the data source returned by SQLCONNECT( ). Specify 0 for nConnectionHandle to terminate all active connections.

Remarks

SQLDISCONNECT( ) returns 1 if the connection is successfully terminated, – 1 if there is a connection level error, and – 2 if there is an environment level error.

SQLDISCONNECT( ) terminates a connection to a data source. You must supply the connection handle that SQLCONNECT( ) returned when you established the connection.

Note   If you execute SQLDISCONNECT( ) within an asynchronous function sequence or during a transaction, SQLDISCONNECT( ) generates an error.

Example

The following example assumes an ODBC data source called MyFoxSQLNT is available. SQLCONNECT( ) is issued, and its return value is stored to a variable named gnConnHandle.

If you successfully connect to the data source, SQLCONNECT( ) returns a positive number, a dialog is displayed and SQLDISCONNECT( ) is used to disconnect from the data source.

If you cannot connect to the data source, SQLCONNECT( ) returns a negative number and a message is displayed.

STORE SQLCONNECT('MyFoxSQLNT', '<userid>', '<password>') TO gnConnHandle
IF gnConnHandle <= 0
   = MESSAGEBOX('Cannot make connection', 16, 'SQL Connect Error')
ELSE
   = MESSAGEBOX('Connection made', 48, 'SQL Connect Message)
   = SQLDISCONNECT(gnConnHandle)
ENDIF

See Also

AERROR( ) | SQLCONNECT( ) | SQLSTRINGCONNECT( )