Need help to build query

Question

I am trying to write logic for advanced search which has lot of fields. Based on user inputs I have to build the query dynamically. The oracle query has exists clause also.

At present I have a chain of switch cases which helps me in forming the query. But this has become very complex procedure, editing the logic to build a query has become very difficult.

Other than switch case is there any other way to build query dynamically. Please let me know

Answer 1

Just generic suggestion adding 1=1 in where clause makes thing easier.
This might help Why would someone use WHERE 1=1 AND <conditions> in a SQL clause?
PS: Also update your question with specific problem otherwise it is very likely to be get closed.

Answer 2

There is EasyQuery ( http://devtools.korzh.com/easyquery/ ) solution but it's implemented for ASP.NET as far as I know. However, they have a jQuery-based client-side library which could be useful in your case.