如何获取TSQL中第一列的条目末尾?
我有一张这样的桌子:如何获取TSQL中第一列的条目末尾?,sql,sql-server,tsql,Sql,Sql Server,Tsql,我有一张这样的桌子: Sequence 2089697 2089738 2089838 2090368 2090400 我想要另一个专栏 Sequence; EndSequence 2089697; 2089737 2089738; 2089837 2089838; 2090367 2090368; 2090399 2090400; null EndSequence将是Sequence列的下一条记录的结尾。您可以将表连接到自身,其中连接中的条件是匹配右侧的记录大于左侧记录的值。然后根据左
Sequence
2089697
2089738
2089838
2090368
2090400
我想要另一个专栏
Sequence; EndSequence
2089697; 2089737
2089738; 2089837
2089838; 2090367
2090368; 2090399
2090400; null
EndSequence将是Sequence列的下一条记录的结尾。您可以将表连接到自身,其中连接中的条件是匹配右侧的记录大于左侧记录的值。然后根据左侧的值进行分组,并根据右侧的最小值进行聚合:
SELECT l.Sequence, MIN(r.Seqence)-1 "EndSequence"
FROM table l
LEFT JOIN table r ON r.Sequence > l.Sequence
GROUP BY l.Sequence
适用于SQL SERVER 2005/2008
WITH records
AS
(
SELECT Sequence,
ROW_NUMBER() OVER (ORDER BY Sequence ASC) rn
FROM TableName
)
SELECT a.Sequence, b.Sequence - 1 EndSequence
FROM records a
LEFT JOIN records b
ON a.rn+1 = b.rn
SELECT SEQUENCE,
LEAD(SEQUENCE) OVER (ORDER BY SEQUENCE) - 1 EndSequence
FROM TableName