合并单表中某两行具有相同内容的数据，变成一行数据来显示。 现为合并p1,p2字段的值。 createtabletest ( p1varchar(10), p2varchar(10), p3varchar(10), p4varchar(10), p5varchar(10) ) 无 (select aaa.p1, bbb.p2, aaa.p3, aaa.p4, aaa.p5 from (select RO
合并单表中某两行具有相同内容的数据，变成一行数据来显示。现为合并p1,p2字段的值。
create table test
(
p1 varchar(10),
p2 varchar(10),
p3 varchar(10),
p4 varchar(10),
p5 varchar(10)
)
<无>
$velocityCount-->
( select aaa.p1, bbb.p2, aaa.p3, aaa.p4, aaa.p5 from (select ROW_NUMBER() OVER(ORDER BY ppp.p3) as RowNumber1, ppp.* from test ppp where ppp.p2 is null) aaa, (select ROW_NUMBER() OVER(ORDER BY qqq.p3) as RowNumber1, qqq.* from test qqq where qqq.p1 is null) bbb where (aaa.p3 = bbb.p3 and aaa.p4 = bbb.p4) ) union all ( select * from test where (p3,p4) not in (select p3,p4 from test group by p3,p4 having count(*)>1) )
