HSQL |刪除數據庫

Question

我目前工作的一個小的數據庫只有3個表，顯示在一個

javafx.TableView<Event> 

插入一些東西到數據庫中運行的所有罰款與SQLExpression

INSERT INTO events (name, location, numberOfGuests, date) VALUES (?, ?, ?, ?) 

，所以我想同樣做刪除表達這樣：

DELETE FROM events WHERE name = (name) AND location = (location) AND numberofguests = (numberOfGuests) AND date = (date) VALUES (?, ?, ?, ?) 

當然，我需要收拾這一個PreparedStatement：

private static PreparedStatement getPrepStateFromEvent (Event e) throws SQLException { 
    //--get the attributes of the event--// 
    String eventName = e.getName(); 
    String location = e.getLocation(); 
    int numOfGuests = e.getNumberOfGuests(); 
    Date d = e.getDate(); 

    //--form a prepared statement--// 
    PreparedStatement pstmnt = conn.prepareStatement(INSERT_INTO_EVENTS); 

    //--enter values for the spaceholders in the pstmnt--// 
    pstmnt.setString(1, eventName); 
    pstmnt.setString(2, location); 
    pstmnt.setInt(3, numOfGuests); 
    pstmnt.setDate(4, d); 

    //--return--// 
    return pstmnt; 
} 

這對插入工作都很好，但不適用於刪除。你能幫我嗎？

Answer 1

你DELETE語法是錯誤的：

DELETE FROM events 
WHERE name = ? 
    AND location = ? 
    AND numberofguests = ? 
    AND date = ? 

沒有VALUES條款，你從哪看到奇怪的語法？
http://hsqldb.org/doc/2.0/guide/dataaccess-chapt.html#dac_delete_statement

：

以供將來參考，完整的語法在手冊中記載