When the connector executes a query, it tries to match the column names the query returns with the column names specified on the output link of the connector stage.
当连接器执行查询时，它试图将查询返回的列名与在连接器阶段的输出链接中指定的列名匹配。
It displays the result column, which has been defined in the DB2 Connector Stage.
它显示result列，其已经在DB 2连接器阶段中定义。
The connector generates the query SQL at runtime based on the target table and the column definitions.
连接器将根据目标表和列定义在运行时生成查询s QL。
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