[] Sql sql must know will be _02

chapter10 - sql common standards which, in how to use SQL92 connected?

sql two main criteria sql92, sql95;

sql92 in five connections:

. A Cartesian product: is a mathematical operation, two sets of X and Y, X, and Y represents a Cartesian product of all possible combinations.

1 SELECT * FROM player, team;

b. Equijoins

 

c. Nonequijoins connection

d. an outer connector (outer connector do, right outer connector)

e. Since the connection