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Sorry for the newbie question.
I have define a table in a following way
CREATE TABLE `class1` (
`name` varchar(20) NOT NULL,
`familyname` varchar(20) NOT NULL,
`id` int(11) DEFAULT NULL,
KEY `class1` (`name`,`familyname`));
Can you explain me what is the difference here that i have here a name and family name as key.
I have to enter values to the table and run queries but i can’t understand what it gives me ? If i not define name and family name as keys i get the same results .
A key, otherwise known as an index, will not change the results of a query, but sometimes it can make the query faster.
If you’re interested, you can read about different kinds of keys here.