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大家在查： CUST_INFO 较寒冷 persistant CUST_NUM silly twit Hakia，SenseBot 思·米勒 Schuss 兹塔瓦 gence

CUST_INTEREST

CUST_INTEREST

CUST_INTEREST

CUST_INTEREST

1

That is, table CUST_INTEREST could be very selective through the join predicate .

即，通过连接谓词，CUST_INTEREST 表的选择性非常强。

2

Contrast that with CUST_INTEREST, in which the number of qualified rows is the same as the cardinality (31 , 255 ).

与 CUST_INTEREST 相比，符合条件的行数与基数一样（31,255 ）。

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