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

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SQLRETURN SQLExecDirect(SQLHSTMT         StatementHandle,
                        SQLCHAR         *StatementText,     
                        SQLINTEGER       TextLength);

Parameter

**Table 1** SQLExecDirect parameters
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.