| title | Consistency Check | ||
|---|---|---|---|
| description | Consistency Check | ||
| author | David-Engel | ||
| ms.author | davidengel | ||
| ms.date | 01/19/2017 | ||
| ms.service | sql | ||
| ms.subservice | connectivity | ||
| ms.topic | conceptual | ||
| helpviewer_keywords |
|
A consistency check is performed by the driver automatically whenever an application sets the SQL_DESC_DATA_PTR field of the APD, ARD, or IPD. Whenever this field is set, the driver checks that the value of the SQL_DESC_TYPE field and the values applicable to the SQL_DESC_TYPE field in the same record are valid and consistent.
The SQL_DESC_DATA_PTR field of an IPD is not normally set; however, an application can do so to force a consistency check of IPD fields. The value that the SQL_DESC_DATA_PTR field of the IPD is set to is not actually stored and cannot be retrieved by a call to SQLGetDescField or SQLGetDescRec; the setting is made only to force the consistency check. A consistency check cannot be performed on an IRD.
For more information on the consistency check, see SQLSetDescRec.