The combined record is much easier to use-you only have to check the PICTURE field to see if it's not null (which was the result of the LEFT OUTER JOIN).
而组合的记录使用起来要容易得多—只需检查PICTURE字段,查看它是否为空(这是LEFT OUTER JOIN的结果)。
I also issued them a passport, put their picture in it, had them sign their names, check to see how they know their addresses.
我还给他们每人发了一个护照,把他们的照片放在里面,并让他们签名,从而检查他们。
When the Myers realized that the bag was missing, they decided to check the picture that was taken some minutes before and as they suspected, they did catch the thief on a camera.
当梅尔一家意识到包不见了,他们决定看看几分钟前拍摄的照片,正如他们所怀疑,他们真的在相机上看到小偷在偷他们的东西。
I also issued them a passport, put their picture in it, had them sign their names, check to see how they know their addresses.
我还给他们每人发了一个护照,把他们的照片放在里面,并让他们签名,从而检查他们。
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