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在此TSQL CTE中,我试图建立一个递归的以父版本开始的发票列表,每个发票的版本为1。CTE递归查询以填充序列
With
myList
AS (Select 10000 as INVOICE, 3 as VER
UNION ALL
Select 20000 as INVOICE, 5 as VER
UNION ALL
Select 30000 as INVOICE, 8 as VER
UNION ALL
Select 40000 as INVOICE, 2 as VER)
,newList (Invoice, Ver)
AS (Select
L1.Invoice
,L1.Ver
from
myList L1
UNION ALL
Select
L2.Invoice
,L2.Ver - 1 Ver
from
myList L2
Join
newList L3
on L2.invoice = L3.Invoice and L2.VER = L3.VER
Where
L2.Ver > = 1)
Select * from newList order by INVOICE, VER desc
上 'myList中' A选择会给你:
Invoice Ver
10000 3
20000 5
30000 8
40000 2
而我希望达到的目标是:
Invoice Ver
10000 3
10000 2
10000 1
20000 5
20000 4
20000 3
20000 2
20000 1
30000 8
30000 7
30000 6
30000 5
30000 4
30000 3
30000 2
30000 1
40000 2
40000 1
我尝试了许多变化(当然不是正确的!)但我能做的最好的只是实现第二级...
Invoice Ver
10000 3
10000 2
20000 5
20000 4
30000 8
30000 7
40000 2
40000 1
感谢您的光临!
哈哈 - 以为我做你说的正是我需要做的。我想微软的例子让我失望了,因为CTE的两条腿都引用了锚点查询。无论如何,做得好! – flaZer 2014-11-03 19:58:27