Outer join and Association question

[#1]

Hi ! I'm not sure about the meaning of the following sentence in Reference Manual Book I Page 472. Can you help me?

"An outer join in SQL is usually a one way projection of one table on another"

Thanks!

[#2]

Table1
A	B
1	aa
2	cc
3	ee

Table2
A	C
1	xx
4	yy

select * from table1;

join

select * from table2;

OR

select * from table1;

outer join

select * from table2;

Joined table
A	B	C
1	aa	xx
2	cc	-
3	ee	-
4	-	yy

note-  join and outer join are the same

"here we see the projection of one table on another"

[er_mohit]

hiii

in qlikview

putting either join or outer join between two table is same, so don't be confused

see the attached file