详解SQL语句的集合运算

2025-11-04 16:44:53分类：新闻中心阅读(64542)

复制WITH    INTERSECT_ALL            AS (  　　　　　　　　　SELECT   ROW_NUMBER() OVER ( PARTITION BY country,详解 region, city ORDERBY ( SELECT                                                               0                                                                ) ) AS rownum ,                          country ,                          region ,                          city                 FROM     HR.Employees                 EXCEPT                SELECT   ROW_NUMBER() OVER ( PARTITION BY country, region, city ORDERBY ( SELECT                                                               0                                                                ) ) AS rownum ,                          country ,                          region ,                          city                 FROM     Sales.Customers               )      SELECT  country ,              region ,              city      FROM    INTERSECT_ALL  1.2.3.4.5.6.7.8.9.10.11.12.13.14.15.16.17.18.19.20.21.22.23.24.25.26.27.28.29.30.31.32.33.34.35.36.37.38.39.40.41.42.43.