| 1. | Join column a column referenced in a join condition
将数据组织到相关行和列的系统。 |
| 2. | The partitioning key should include the most frequently joined columns
分区键应该包括最频繁参与连接的列。 |
| 3. | The optimizer will choose dynamic hash join if none of the joined columns has index
如果连接列上不存在索引，那么优化器将选择动态哈希连接。 |
| 4. | This property should be set to true only if the joined column in the parent table is unique
的值不正确。仅当父表中的联接列唯一时，才应将此属性设置为true 。 |
| 5. | The merge join transformation requires that both inputs be sorted and that the joined columns have matching metadata
合并联接转换要求两个输入都是已排序的，并且要求被联接的列具有匹配的元数据。 |
| 6. | The result set of a left outer join includes all the rows from the left table specified in the left outer clause , not just the ones in which the joined columns match
左向外部联接的结果集包括left outer子句中指定的左表的所有行，而不仅仅是联接列所匹配的行。 |
