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deleting-rows-by-bookmark-with-sqlbulkoperations.md

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title Deleting Rows by Bookmark with SQLBulkOperations
description Deleting Rows by Bookmark with SQLBulkOperations
author David-Engel
ms.author davidengel
ms.date 01/19/2017
ms.service sql
ms.subservice connectivity
ms.topic concept-article
helpviewer_keywords
data updates [ODBC], SQLBulkOperations
SQLBulkOperations function [ODBC], deleting rows
updating data [ODBC], SQLBulkOperations

Deleting Rows by Bookmark with SQLBulkOperations

When deleting a row by bookmark, SQLBulkOperations makes the data source delete one or more selected rows of the table. The rows are identified by the bookmark in a bound bookmark column.

To delete rows by bookmark with SQLBulkOperations, the application does the following:

  1. Retrieves and caches the bookmarks of all rows to be deleted. If there is more than one bookmark and column-wise binding is used, the bookmarks are stored in an array; if there is more than one bookmark and row-wise binding is used, the bookmarks are stored in an array of row structures.

  2. Sets the SQL_ATTR_ROW_ARRAY_SIZE statement attribute to the number of bookmarks and binds the buffer containing the bookmark value, or the array of bookmarks, to column 0.

  3. Calls SQLBulkOperations with Operation set to SQL_DELETE_BY_BOOKMARK.