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This is a simple problem to solve if you are using PHP to code your query...

Just do something like this:

/* We will make color a required field for this example */
if($color!=""){...

Hey guys... thanks for all the info and ideas. Seems to be an unexpectedly controversial topic. I wasn't really confident that there would be any gains, but I had hoped for the possibility. ...

I understand what you are trying to do there. I'm not really sure why you want to do that, because surely one site like this is enough (or more than enough!). But if you really want to do that, I...

Just wondering which of these is more resource-efficient way to do stuff...

Example 1:

var itemName=["triangle","square","circle"];
var itemSides=[3,4,0];
var...