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The ifx_var_setnull() function sets an lvarchar or var binary host variable to a null value.
The ifx_var_setnull() function sets a host variable of type lvarchar or var binary to a null value. To set an ESQL/C host variable of any other data type to null, use the rsetnull() library function. For more information, see page B-330.
0 | The function was successful. |
<0 | The function was not successful and the return value indicates the cause of the error. |