两个要求交集的表（列）的结构要一致,对应的字段数,字段类型都应该相同；将两个数据的数据列用UNIONALL关键字合并；将上面的所有需要比较的列 GROUPBY；最后HAVINGCOUNT(任意一列，不能多列)>1,那么就是交集。SELECTa.*FROM(   ...

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JoelMokyr,SeriesEditorTitlesin thePrincetonEconomicHistoryoftheWesternWorld seektoexplainthefullrangeofWesterneconomicdevelopmentinallofitsfacets:thet...

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