Searching between dates in SQL with JDBC?

Question

I\'m currently writing a Java Swing application that reads data in from a MYOB database file and displays certain information in a table. I\'ve been able to successfully gen

Answer 1

Use quotes around your dates:

rs = stmt.executeQuery("SELECT sales.InvoiceNumber, sales.ShipToAddress, sales.Date "
            + "FROM sales, customers "
            + "WHERE sales.CardRecordID = customers.CardRecordID "
            + "AND customers.Name = 'Cash Sales' "
            + "AND sales.Date BETWEEN '" + sdate + "' AND '" + edate + "' "
            + "ORDER BY sales.ShipToAddress ASC, sales.Date DESC"
            + ";");

Or it might be safer to use a prepared statement (if the dates come from untrusted inputs for example):

SimpleDateFormat formatter = new SimpleDateFormat("dd/MM/yyyy");
java.util.Date startDate = formatter.parse(sdate);
java.util.Date endDate = formatter.parse(edate);
PreparedStatement pstmt = connection.prepareStatement("SELECT sales.InvoiceNumber, sales.ShipToAddress, sales.Date "
            + "FROM sales, customers "
            + "WHERE sales.CardRecordID = customers.CardRecordID "
            + "AND customers.Name = 'Cash Sales' "
            + "AND sales.Date BETWEEN ? AND ? "
            + "ORDER BY sales.ShipToAddress ASC, sales.Date DESC");
pstmt.setDate(1, new java.sql.Date(startDate.getTime()))
pstmt.setDate(2, new java.sql.Date(endDate.getTime()))

The between operator is inclusive, but if your database field is actually a timestamp, then a date with no time is assumed to be at time 00:00:00.000. So, in such a case, for your dates to be inclusive, you can add one day to your end date. Technically it will also include the first instant of the next day (00:00:00.000 hour), but depending on your application it may be enough.

Otherwise you could use >= on "start date" and < on "end date plus one day":

"sales.Date >= '" + sdate + "' AND sales.Date < '" + edatePlusOne + "' "

Answer 2

Class.forName("com.mysql.jdbc.Driver");

connection=DriverManager.getConnection("jdbc:mysql://localhost:3306/hospitall","root","");

PreparedStatement ps=connection.prepareStatement("select * from patient where patientid='"+txtpatientid.getText()+"'");

Statement stm=connection.createStatement();

ResultSet rs=ps.executeQuery();

if(rs.next()){

String patientid=txtpatientid.getText(); 

String str="select * from patient where patientid='"+patientid+"'";

ResultSet result=stm.executeQuery(str);

Answer 3

It looks like you need to express dates in this format:

select * from table where datefield between '2006-10-01' and '2006-11-30'

Look here also, do not forget that google is your friend! :)