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 { ObjectID = <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 = "User=user;Password=password;"; using (SAPHybrisC4CConnection connection = new SAPHybrisC4CConnection(connectionString)) { int rowsAffected; SAPHybrisC4CCommand cmd = new SAPHybrisC4CCommand("DELETE FROM AccountCollection WHERE ObjectID = @myObjectID", connection); cmd.Parameters.Add(new SAPHybrisC4CParameter("myObjectID","'00000000-0000-0000-0000-000000000000'")); rowsAffected = cmd.ExecuteNonQuery(); }
VB.NET
Dim connectionString As [String] = "User=user;Password=password;" Using connection As New SAPHybrisC4CConnection(connectionString) Dim rowsAffected As Integer Dim cmd As New SAPHybrisC4CCommand("DELETE FROM AccountCollection WHERE ObjectID = @myObjectID", connection) cmd.Parameters.Add(New SAPHybrisC4CParameter("myObjectID", "'00000000-0000-0000-0000-000000000000'")) rowsAffected = cmd.ExecuteNonQuery() End Using