add the join column named jmxconnectionid.
添加名为jmxconnectionid 的join column。
on the other hand, if the first join column is an integer, the related join column must also be of an integer data type, but it can be a different size.
另一方面,如果第一个联结资料行为整数,则关联的联结资料行也必须为整数资料型别,但资料大小可有所不同。
it then reads from the outer table bad_credit using the ship operator, hashing the join column values, and checking in the lookup table generated for the inner table.
然后,它使用ship操作符读外表 bad_credit,散列连接列的值,并检查为内表生成的查找表。
if a join is between one table that has an ascending index on the join column and a second table that has a randomized index column, the indexes are not in the same order and cannot be merged.
如果一个连接位于两个表之间,一个表在连接列上具有升序索引,另一个表具有随机索引列,那么两个索引不是相同的顺序,无法合并。
the join is performed by scanning the inner table of the hash join, customers, and generating a lookup table by hashing the join column values.
该连接的执行过程包括扫描散列连接中的内表customers,并通过散列连接列的值生成一个查找表。