JDBC PreparedStatement在列名称中带有“？”

Question

I am using a JDBC connection to fetch data from an Access database. The database design is not my control. In the database there are columns that have "?" included in their names, for example: Open? , Paid? , and lots more.

When I try to fetch data with a PreparedStatement it gives me an error. The query is:

SELECT Open? FROM tblJobList WHERE WeekEnding=?

I also tried to use brackets like [Open?] , but the result is the same.

The error I receive is "Too few parameters ..." as I am pushing only one parameter into the PreparedStatement.

I can not use normal statement because of WeekEnding=? as this value is a Timestamp and I could not manage to work it with Statement. Only prepared statement works here.

Can anyone tell me how to use these kind of column names in a PreparedStatement?

Answer 1

use the " character

"SELECT \"Open?\" FROM tblJobList WHERE WeekEnding=?"

tested this against oracle and appears to work with mssqlserver

How to select a column in SQL Server with a special character in the column name?

Answer 2

Just to update this for current technologies:

While the JDBC-ODBC Bridge and Access ODBC were unable to handle a PreparedStatement with a column name containing a question mark, the UCanAccess JDBC driver handles it just fine, as can be confirmed with the following code:

String connectionUrl = "jdbc:ucanaccess://C:/Users/Public/UCanAccessTest.accdb";
Connection conn = DriverManager.getConnection(connectionUrl);
String sql = "SELECT ID, [Open?] FROM tblJobList WHERE WeekEnding=?";
PreparedStatement ps = conn.prepareStatement(sql);
ps.setDate(1, java.sql.Date.valueOf("2016-01-01"));
ResultSet rs = ps.executeQuery();
while (rs.next()) {
    System.out.printf("%d: %s%n", rs.getInt("ID"), rs.getBoolean("Open?"));
}
conn.close();

For more information on UCanAccess, see

Manipulating an Access database from Java without ODBC

Answer 3

I am not sure but you can try // to escape the special meaning of ? and to use it as a normal character. Like:

"SELECT Open//? FROM tblJobList WHERE WeekEnding=?"

You can get something similar to your problem here: Round bracket in string with JDBC prepared statement

Answer 4

在MSSQL中，转义引号是通过双引号来完成的，因此“”或“”将分别产生一个转义的'和'。