【小小问题集锦13之 关于分组加顺序号的SQL写法】
/*
原表:
thid other
a 1
a 1
b 0
b 0
b 0
c 2
c 2
希望变成:
thid other
a 1
a 2
b 0
b 1
b 2
c 2
c 3
*/
if OBJECT_ID('tb') is not null
drop table tb
go
create table tb (id varchar(10) ,value int)
insert tb select
'a' , 1 union all select
'a' , 1 union all select
'b' , 0 union all select
'b' , 0 union all select
'b' , 0 union all select
'c' , 2 union all select
'c' , &nb
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应一个朋友的要求,贴上收藏的SQL常用分页的办法~~
表中主键必须为标识列,[ID] int IDENTITY (1,1)
1.分页方案一:(利用Not In和SELECT TOP分页)
语句形式:
SELECT TOP 页记录数量 *
from 表名
WHERE (ID NOT IN
(SELECT TOP (每页行数*(页数-1)) ID
from 表名
ORDER BY ......
一:Select语句:
select 字段名 from 表名 where 条件 order by 排序
see:select distinct 从多个相同字段中抓唯一值
see:查找ld_det_andy表中有数据但ld_det_temp表中没数据的数据
select * from ld_det_a ......
问题描述:
有表tb, 如下:
id values
----------- -----------
1 aa,bb
2 aaa,bbb,ccc
欲按,分拆values列, 分拆后结果如下:
id& ......
Last login: Mon Feb 8 14:13:19 2010 from 192.168.1.249
ipnet
-bash-3.00$
-bash-3.00$ ipnet
-bash: ipnet: command not found
-bash-3.00$ su - oracle
Password:
eastcsu: incorrect password
-bash-3.00$ eastcom
-bash: eastcom: command not found
-bash-3.00$ su - oracle
Password:
[oracl ......
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