使用Prepared Statements设置表名 [英] Using Prepared Statements to set Table Name

问题描述

我正在尝试使用预准备语句来设置表名以从中选择数据，但在执行查询时我一直收到错误。

I'm trying to use prepared statements to set a table name to select data from, but I keep getting an error when I execute the query.

错误示例代码显示如下。

The error and sample code is displayed below.

[Microsoft][ODBC Microsoft Access Driver] Parameter 'Pa_RaM000' specified where a table name is required.



private String query1 = "SELECT plantID, edrman, plant, vaxnode FROM [?]"; //?=date
public Execute(String reportDate){
    try {

        Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        Connection conn = DriverManager.getConnection(Display.DB_MERC);
        PreparedStatement st = conn.prepareStatement(query1);
        st.setString(1, reportDate);
        ResultSet rs = st.executeQuery();

关于可能导致此问题的任何想法？

Any thoughts on what might be causing this?

推荐答案

表名不能用作参数。它必须是硬编码的。所以你可以这样做：

A table name can't be used as a parameter. It must be hard coded. So you can do something like:

private String query1 = "SELECT plantID, edrman, plant, vaxnode FROM [" + reportDate + "?]";

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