SQLExecDirect¶
Function¶
SQLExecDirect executes a prepared SQL statement specified in this parameter. This is the fastest execution method for executing only one SQL statement at a time.
Prototype¶
SQLRETURN SQLExecDirect(SQLHSTMT StatementHandle,
SQLCHAR *StatementText,
SQLINTEGER TextLength);
Parameter¶
Keyword | Description |
|---|---|
StatementHandle | Statement handle, obtained from SQLAllocHandle. |
StatementText | SQL statement to be executed. One SQL statement can be executed at a time. |
TextLength | Length of StatementText. |
Return Values¶
SQL_SUCCESS indicates that the call succeeded.
SQL_SUCCESS_WITH_INFO indicates some warning information is displayed.
SQL_NEED_DATA indicates insufficient parameters provided before executing the SQL statement.
SQL_ERROR indicates major errors, such as memory allocation and connection failures.
SQL_INVALID_HANDLE indicates that invalid handles were called. Values returned by other APIs are similar to the preceding values.
SQL_STILL_EXECUTING indicates that the statement is being executed.
SQL_NO_DATA indicates that the SQL statement does not return a result set.
Precautions¶
If SQLExecDirect returns SQL_ERROR or SQL_SUCCESS_WITH_INFO, the application can then call SQLGetDiagRec, set HandleType and Handle to SQL_HANDLE_STMT and StatementHandle, and obtain the SQLSTATE value. The SQLSTATE value provides the detailed function calling information.
Examples¶
See Examples.