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://myserver:7048;User=myserver\Administrator;Password=admin;ServerInstance=DYNAMICSNAV71;"; using (DynamicsNAVConnection connection = new DynamicsNAVConnection(connectionString)) { int rowsAffected; DynamicsNAVCommand cmd = new DynamicsNAVCommand("DELETE FROM Customer WHERE Id = @myId", connection); cmd.Parameters.Add(new DynamicsNAVParameter("myId","http://myserver:7048/DynamicsNAV71/OData/Customer('01234567')")); rowsAffected = cmd.ExecuteNonQuery(); }
VB.NET
Dim connectionString As [String] = "URL=http://myserver:7048;User=myserver\Administrator;Password=admin;ServerInstance=DYNAMICSNAV71;" Using connection As New DynamicsNAVConnection(connectionString) Dim rowsAffected As Integer Dim cmd As New DynamicsNAVCommand("DELETE FROM Customer WHERE Id = @myId", connection) cmd.Parameters.Add(New DynamicsNAVParameter("myId", "http://myserver:7048/DynamicsNAV71/OData/Customer('01234567')")) rowsAffected = cmd.ExecuteNonQuery() End Using