5,2使用 SELECT语句查询数据 joined_table >i:= table_ source><join_type> <table source>on<search condition> table source CRoSS JoIN table source joined _table ≤join_type>:= I INNERi LEFT RIGHT FULL 1 [ OUTER]了] [< join_ hint >] 基本格式 JOIN5.2 使用SELECT语句查询数据 < joined_table > ::= < table_source><join_type> <table_source>ON<search_condition> | < table_source > CROSS JOIN < table_source > | < joined_table > < join_type > ::= [ INNER | { { LEFT | RIGHT | FULL } [OUTER] } ] [ < join_hint > ] JOIN 基本格式