MDAC 2.5 SDK - ODBC Programmer's Reference
Chapter 21: ODBC API Reference
Conformance
Version Introduced: ODBC 3.0
Standards Compliance: ISO 92
Summary
SQLCloseCursor closes a cursor that has been opened on a statement and discards pending results.
Syntax
SQLRETURN SQLCloseCursor(
SQLHSTMT StatementHandle);
Arguments
StatementHandle
[Input]
Statement handle.
Returns
SQL_SUCCESS, SQL_SUCCESS_WITH_INFO, SQL_ERROR, or SQL_INVALID_HANDLE.
Diagnostics
When SQLCloseCursor returns SQL_ERROR or SQL_SUCCESS_WITH_INFO, an associated SQLSTATE value may 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 SQLCloseCursor 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.) |
| 24000 | Invalid cursor state | No cursor was open on the StatementHandle. (This is returned only by an ODBC 3.x driver.) |
| 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) 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
SQLCloseCursor returns SQLSTATE 24000 (Invalid cursor state) if no cursor is open. Calling SQLCloseCursor is equivalent to calling SQLFreeStmt with the SQL_CLOSE option, with the exception that SQLFreeStmt with SQL_CLOSE has no effect on the application if no cursor is open on the statement, while SQLCloseCursor returns SQLSTATE 24000 (Invalid cursor state).
Note If an ODBC 3.x application working with an ODBC 2.x driver calls SQLCloseCursor when no cursor is open, SQLSTATE 24000 (Invalid cursor state) is not returned, because the Driver Manager maps SQLCloseCursor to SQLFreeStmt with SQL_CLOSE.
For more information, see "Closing the Cursor" in Chapter 10, "Retrieving Results (Basic)."
Code Example
See SQLBrowseConnect and SQLConnect.
Related Functions
| For information about | See |
| Canceling statement processing | SQLCancel |
| Freeing a handle | SQLFreeHandle |
| Processing multiple result sets | SQLMoreResults |