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我有两个不同的数据库（SqlServer，Oracle）

SqlServer有 CUSTOMER_ID 信息， Oracle有 CUSTOMER_ID 等列信息

我想达到以下场景（从第一种方法获取记录集并将该值作为条件应用到（WHERE IN）第二种方法中）

public void getvariable_values() throws SQLException, ClassNotFoundException
{
    System.out.println("Oracle Start Connecting Server");
    oracon = DriverManager.getConnection(oe_url, oe_user, oe_password);
    System.out.println("Oracle Connection succeed");
    Statement s1 = (Statement) oracon.createStatement();
    sql_rs_var = s1.executeQuery("SELECT CUSTOMER_ID FROM CUSTOMER_SERVER )");
    getDatafromsql(sql_rs_var);
}



public void getDatafromsql(Resultset inp_record) throws SQLException, ClassNotFoundException 
{

    Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
    System.out.println("SQL Server Start Connecting ");
    Connection sqlcon = DriverManager
            .getConnection(s_url, s_username, s_password);
    System.out.println("Sql server Connection valid");
    PreparedStatement s1 = sqlcon.prepareStatement("SELECT TOP 6 * FROM documents where customer_id = ?");
    //Something want to apply like below for where in condition
    s1.setString( 1,inp_record);
    sql_rs = s1.executeQuery();
    setdataOracle(sql_rs);
    sqlcon.close();
}

请建议如何在 SQL 中的方法 (getDatafromsql) 中应用 WHERE IN 条件中的完整记录集

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