DELETE ステートメント
テーブルから情報を削除するには、DELETE ステートメントを使用します。
DELETE 構文
DELETE ステートメントには、次の例に示すように、FROM 句のテーブル名とWHERE 句の行の主キーが必要です。
<delete_statement> ::= DELETE FROM <table_name> WHERE { Id = <expression> } [ { AND | OR } ... ]
<expression> ::=
| @ <parameter>
| ?
| <literal>
次の例に示すように、ExecuteNonQuery メソッドを使って、データ操作コマンドを実行し影響を受ける行数を取得できます。
C#
String connectionString = " Url=http://localhost/woocommerce/;ConsumerKey=ck_ec52c76185c088ecaa3145287c8acba55a6f59ad;ConsumerSecret=cs_9fde14bf57126156701a7563fc87575713c355e5;"; using (WooCommerceConnection connection = new WooCommerceConnection(connectionString)) { int rowsAffected; WooCommerceCommand cmd = new WooCommerceCommand("DELETE FROM Orders WHERE Id = @myId", connection); cmd.Parameters.Add(new WooCommerceParameter("myId","6")); rowsAffected = cmd.ExecuteNonQuery(); }
VB.NET
Dim connectionString As [String] = " Url=http://localhost/woocommerce/;ConsumerKey=ck_ec52c76185c088ecaa3145287c8acba55a6f59ad;ConsumerSecret=cs_9fde14bf57126156701a7563fc87575713c355e5;" Using connection As New WooCommerceConnection(connectionString) Dim rowsAffected As Integer Dim cmd As New WooCommerceCommand("DELETE FROM Orders WHERE Id = @myId", connection) cmd.Parameters.Add(New WooCommerceParameter("myId", "6")) rowsAffected = cmd.ExecuteNonQuery() End Using