From StackOverflow
<join_type> ::=
[ { INNER | { { LEFT | RIGHT | FULL } [ OUTER ] } } [ <join_hint> ] ]
JOIN- If you just mention
JOINthen by default it is aINNER JOIN. - An
OUTERjoin has to beLEFT | RIGHT | FULLyou can not simply sayOUTER JOIN. - You can drop
OUTERkeyword and just sayLEFT JOINorRIGHT JOINorFULL JOIN.
