sorry if my explanation is confusing..it is actually like this..
i have an application..it is at my localhost, and ofcoz i have the source code.. i want to do sqli to that app.. based on the entry points to inject codes, i determined that the login form can be used..
login form has 2 fields.. username and password.. the input given in the username field will be converted to the integer.. so when i put the value " hi' OR 1=1-- " in the field, the server return error says that "error: for input string" because the value cannot be converted to the integer..
i don't have any idea how to do sqli on that kind of login form..
i have tested the input parameter in the url using sqlmap, and looks like it is not injectable..but i still did not try sqli on that in depth./
hope that is not confusing..tq