Question

这是我previous question about using multivalue in UCanAccess的延续。我相信我已按照the ComplexTest.java example中的设置设置了我的查询，并且我已经修复了＆amp;按suggested in another stackoverflow answer压缩我的Access数据库。我能够使用getObject正确选择多值字段，但是当我在带有WHERE子句的PreparedStatement中的问号上使用带有SingleValue或SingleValue []的setObject时，返回的结果集不会反映WHERE的限制。而不是返回几百条记录，它返回完整的表或表的组合。有人有建议吗？这是我的代码：

import java.io.File;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

import net.ucanaccess.complex.SingleValue;

public class WhereQuery {
    public static void main(String[] args) {
      String sql = "SELECT [A-CCBC-BaseDrawings-1].* FROM [TableA] WHERE ((([TableA].Place)=?));";

      File database = new File("/Users/George/Java/WhereQueryProject/Database.accdb"); // Access database   
      Connection conn = null;   // The connection object
      try {
        Class.forName("net.ucanaccess.jdbc.UcanaccessDriver");  // Sets up the UCanAccess driver
        conn = DriverManager.getConnection("jdbc:ucanaccess://"+database.getPath());    // connects to the MS Access database
      }     
      catch (ClassNotFoundException cnfe) {
        cnfe.printStackTrace();
      }
      catch (SQLException se) {
        se.printStackTrace();
      }

      PreparedStatement ps = null;
      ResultSet rs = null;
      try {
        ps = conn.prepareStatement(sql);
        ps.setObject(1,new SingleValue[]{new SingleValue("Baltimore")});
        rs = ps.executeQuery();
      }
      catch (SQLException e) {
        e.printStackTrace();
      }
      FromAccess.printResultSet(rs, sql); // a method for printing result sets
    }
}

UCanAccess中select语句中的多值WHERE返回不正确的结果

0 个答案: