Select exception!!!!

Question

hi
anyone would help me ??
PreparedStatement select_stm =con.prepareStatement("select ISBN,B_nam,pub_hous from Book_inf where ?=?");
~~~~~~~~~~~ I wonder if there's something wrong with this ??
select_stm.setString(1,chechby);
select_stm.setString(2,keyword);
when excuted there is
java.sql.SQLException: [Microsoft][ODBC SQL Server Driver][SQL Server]?????? '@P1@P2'?
what is wrong ??
I'm a green hand!!

Answer 1

The placing of '%' depends on which kind of matching you want to do.
Please have a look at the following code.
* ASSUMPTION : Criteria Class is defined and is Public
public boolean execute(/* may be some parameters*/){
//some code
String sql = "select * from employee where name like " + buildMatchString ("ABC", Criteria.CONTAINS);
// code to execute query
public String buildMatchString (String stringToMatch, int matchCriteria){
          switch (matchCriteria) {
          case Criteria.MATCH_EXACT :
               returnString = ("'" + stringToMatch + "'");
               break;
          case Criteria.STARTS_WITH :
               returnString = ("'" + stringToMatch + "%'");
               break;
          case Criteria.ENDS_WITH :
               returnString = ("'%" + stringToMatch + "'");
               break;
          case Criteria.CONTAINS_VALUE :
          returnString = ( "'%" + stringToMatch + "%'");
               break;
          default:
               returnString = null;
               //break;
          } // end of switch (matchCriteria)
I hope this helps.
Regards,
Ketan Shah