[size=large]a. 乙個月的第一天
select dateadd(mm, datediff(mm,0,getdate()), 0)
b. 本週的星期一
select dateadd(wk, datediff(wk,0,getdate()), 0)
c. 一年的第一天
select dateadd(yy, datediff(yy,0,getdate()), 0)
d. 季度的第一天
select dateadd(qq, datediff(qq,0,getdate()), 0)
e. 上個月的最後一天
select dateadd(ms,-3,dateadd(mm, datediff(mm,0,getdate()), 0))
f. 去年的最後一天
select dateadd(ms,-3,dateadd(yy, datediff(yy,0,getdate()), 0))
g. 本月的最後一天
select dateadd(ms,-3,dateadd(mm, datediff(m,0,getdate())+1, 0))
h. 本月的第乙個星期一
select dateadd(wk, datediff(wk,0,
dateadd(dd,6-datepart(day,getdate()),getdate())
), 0)
i. 本年的最後一天
select dateadd(ms,-3,dateadd(yy, datediff(yy,0,getdate())+1, 0))。
獲取表結構[把 'sysobjects' 替換 成 'tablename' 即可]
select case isnull(i.name, '')
when '' then ''
else '*'
end as ispk,
object_name(a.id) as t_name,
a.name as c_name,
isnull(substring(m.text, 1, 254), '') as pbc_init,
t.name as f_datatype,
case isnull(typeproperty(t.name, 'scale'), '')
when '' then cast(a.prec as varchar)
else cast(a.prec as varchar) + ',' + cast(a.scale as varchar)
end as f_scale,
a.isnullable as f_isnullable
from syscolumns as a
join systypes as t
on (a.xtype = t.xusertype and a.id = object_id('sysobjects') )
left join ( sysindexes as i
join syscolumns as a1
on ( i.id = a1.id and a1.id = object_id('sysobjects') and (i.status & 0x800) = 0x800 and a1.colid <= i.keycnt) )
on ( a.id = i.id and a.name = index_col('sysobjects', i.indid, a1.colid) )
left join syscomments as m
on ( m.id = a.cdefault and objectproperty(a.cdefault, 'isconstraint') = 1 )
order by a.colid asc [/size]
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