MySql select statement

Question

Hi All,
I have java application which suppose to connect to MySql server and print the selected data.
The application has 4 combo boxes (first item is empty): Name, Customer, Supplier, Status.
User could choose any of these options. So there are huge number of select combinations.
Is it possible to create one select statement template something like this:
PreparedStatement stmt = con.prepareStatement( "SELECT * from database WHERE user_id = ?,
and customer_id = ?,
and supplier_id = ?,
and status = ? " );
if ( ! ComboBox.getSelectedItem().toString().isEmpty() )
stmt00.setString( 1, ComboBox.getSelectedItem().toString() );
else
stmt00.setString( 1, "*" );
etc…
I'm stuck at this part stmt00.setString( 1, "*" ). Is there any way to write statement SELECT * from table WHERE column = * ?
What is the proper way to write such selection ?
Thanks in advance,
Vladimir

Answer 1

Is there any way to write statement SELECT * from table WHERE column = * ?No, that's invalid SQL.
What is the proper way to write such selection ?If you need in one case to select a single user, but in another case to select all of them, then you need to handle two different SQL statements.
1. SELECT * from table WHERE column = value
2. SELECT * from table
This has nothing to do with Java.