Mysql join practices use LEFT JOIN and INNER JOIN only? -


as reading joins realize 2 of in work others same. correct?

inner join = join left join = left outer join

are there joins use?

from http://dev.mysql.com/doc/refman/5.0/en/join.html:

join_table:     table_reference [inner | cross] join table_factor [join_condition]   | table_reference straight_join table_factor   | table_reference straight_join table_factor on conditional_expr   | table_reference {left|right} [outer] join table_reference join_condition   | table_reference natural [{left|right} [outer]] join table_factor

text within braces optional. inner , cross keywords optional normal join (the documentation mentions this). outer keyword optional outer (left|right) joins.

this bit clearer in natural left join not same natural join, inner, cross, , outer keywords optional when used in correct spot.

note mysql specific. not case in standard sql.


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