Java.sql.SQLException: while calculating row count: Unexpected exception :

Question

I am working with JDBC that is connected to MS Access 2003 file.
I wrote and tested in MS Access following query and all it is working well. If I write this query and execute it is working well.
pstm = DBConnect.prepareStatement(
"SELECT Parameter.Name, Parameter.id FROM " +
"(ParameterGroupMember INNER JOIN ApplicationReadsParameter ON " +
"ParameterGroupMember.Member_Parameter_id = ApplicationReadsParameter.Parameter_id)" +
"INNER JOIN Parameter ON ApplicationReadsParameter.Parameter_id = Parameter.id " +
"WHERE (ParameterGroupMember.Group_Parameter_id=40) " +
"UNION ALL SELECT Parameter.Name, Parameter.id FROM " +
"Parameter INNER JOIN ApplicationReadsParameter ON " +
"ApplicationReadsParameter.Parameter_id=Parameter.id WHERE (Parameter.id=40); ");
rs = pstm.executeQuery();
When I use code, that sets parameters in the statement it is firing following exception
java.sql.SQLException: while calculating row count: Unexpected exception : 1
at sun.jdbc.odbc.JdbcOdbcResultSet.parameterQuery(JdbcOdbcResultSet.java:6417)
at sun.jdbc.odbc.JdbcOdbcResultSet.calculateRowCount(JdbcOdbcResultSet.java:6336)
at sun.jdbc.odbc.JdbcOdbcResultSet.initialize(JdbcOdbcResultSet.java:155)
at sun.jdbc.odbc.JdbcOdbcStatement.getResultSet(JdbcOdbcStatement.java:424)
at sun.jdbc.odbc.JdbcOdbcPreparedStatement.executeQuery(JdbcOdbcPreparedStatement.java:93)
pstm = DBConnect.prepareStatement(
"SELECT Parameter.Name, Parameter.id FROM " +
"(ParameterGroupMember INNER JOIN ApplicationReadsParameter ON " +
"ParameterGroupMember.Member_Parameter_id = ApplicationReadsParameter.Parameter_id)" +
"INNER JOIN Parameter ON ApplicationReadsParameter.Parameter_id = Parameter.id " +
"WHERE (ParameterGroupMember.Group_Parameter_id=?) " +
"UNION ALL SELECT Parameter.Name, Parameter.id FROM " +
"Parameter INNER JOIN ApplicationReadsParameter ON " +
"ApplicationReadsParameter.Parameter_id=Parameter.id WHERE (Parameter.id=?); ");
pstm.setInt(1, 40);
pstm.setInt(2, 40);
rs = pstm.executeQuery();
Further I found that the problem is with the setting of the second parameter in the statement. Is there different way how to set the second parameter if union is used?
Thanks and regards,
Jan

Answer 1

Jan.Hv wrote:
I am working with JDBC that is connected to MS Access 2003 file.
Use code tags when you post code.
I wrote and tested in MS Access following query and all it is working well. You mean it works in MS Access. Not that it works in java.
>
pstm = DBConnect.prepareStatement(
"SELECT Parameter.Name, Parameter.id FROM " +
"(ParameterGroupMember INNER JOIN ApplicationReadsParameter ON " +I STRONGLY suggest that rather than putting spaces at the end of each part put it at the beginning. It makes it much easier to get it right.
I also suggest formatting the code. There are various ways.
        // Wrong
        String sql = "select x, y z "
                         + "from table1 t1, idtable idt"
                         + "where t1.tim=idt.tim "
                         +  "and t1.book = idt.book";
        // Right (spaces) - one way to format
        String sql = "select"
                         + "         x, y z"
                         + " from table1 t1, idtable idt"
                         + " where"
                         + "          t1.tim=idt.tim"
                         + "          and t1.book = idt.book";Your code is in fact missing a space. No idea if that is a problem or not.
Remove the semicolon from the end.
PRINT the sql before you use it, copy/paste and use that string in MS Access (replace the ?) to see if it work.
Further I found that the problem is with the setting of the second parameter in the statement. Is there different way how to set the second parameter if union is used?The MS Access ODBC driver isn't really great for actually reporting errors correctly. So usually any error means something is wrong and it is up to you to figure out the exact problem.