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pojoA

pojoA

pojoA

pojoA

1

When pojoA has many non-nullable properties , you have to load a large amount of data to your persistence layer .

当 pojoA 中有很多非空属性时，你不得不将大量数据加载到持久层中。

2

Using eager inner or outer join fetching will repeat pojoA many times in the result set .

使用立即的内连接或外连接抓取会在结果集中将 pojoA 重复很多次。

3

Although the N extra selects were cut to 1 , this is only good when re-running the query on pojoA is cheap .

尽管 N 次额外的 select 减少到 1 次，但这只在重复运行 pojoA 的查询开销很低时才有好处。

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