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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"
select * from table1;
select * from table2;
note- join and outer join are the same
"here we see the projection of one table on another"
putting either join or outer join between two table is same, so don't be confused
see the attached file