prepared statement - JDBC PreparedStatement, UNION Select and parameter passing -

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OK, I know the answer is simple and I am feeling very dumb but ...

Java JDK 1.7, Sybase JDBC Driver

Code snippet: 

  string  by & lt; blah blah & gt; Where date1 =? UNION Select & lt; blah & gt; from & lt; blah blah & gt; where date2 =? ';;; Connection conn = ConnectionManager.getConnection (); Prepare the settings stmt = conn.prepareStatement (SQL) ); Logger.info ("Permanent count:" + stmt.getParameterMetaData (). GetParameterCount ()); Stmt.setDate (1 new java sql.Date (date.getTime ()); stmt.setDate (2, not Or java.sql.Date (date.getTime ()); results set rs = stmt.executeQuery (); while rsnext ()) {// the rest of code}   
     
  1.  So why parmeter only count 1?  
  2.  Program throws an error complaint: java.sql.SQLException: Invalid parameter index 2.  
  3.  If I reduce SQL to any piece Let me decrease the setdate in 1 and then it works fine.  
  4.  With the union SQL runs fine in an interactive SQL session (just filled with a certain date)    
     
     
     I just ran into this problem, and it was very useful, it is not the union section which is throwing errors; This is the date you are passing. If you are using to_date () (ambiguous with your code snippet), then you need to pass a string (instead of date) in the query. Good luck!

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