對已經執行的系統進行大規模模組開發之後，對資料庫和程式修改比較大。
如果開始開發的時候沒有嚴格要求，或者人員沒有按照要求做，或者人員離職交接不合格，很容易造成文件不完整，必須比較兩個資料庫的差別。
下面的sql比較出兩個資料庫中表結構有差的地方。
select obj.name as tablename, col.name asview codecolname, col.xtype,
col.length
into
#tmp1
from eshipping_new_qa_user_1_backup.dbo.syscolumns col inner
join
eshipping_new_qa_user_1_backup.dbo.sysobjects obj
on col.id =
obj.id
order
byobj.name
select obj.name as tablename, col.name as
colname, col.xtype,
col.length
into
#tmp2
from eshipping_20140805.dbo.syscolumns col inner
join
eshipping_20140805.dbo.sysobjects obj
on col.id =
obj.id
order
byobj.name
select tablename,colname,0
as xtypeold,0
as lengthold,0
as xtypenew,0
aslengthnew
into
#t***
from (select tablename,colname from #tmp1 union
select tablename,colname from
#tmp2)
bupdate #t*** set xtypeold=#tmp1.xtype,lengthold=#tmp1.length from #tmp1 where #t***.tablename=#tmp1.tablename and
#t***.colname
=#tmp1.colname
update #t*** set xtypenew=#tmp2.xtype,lengthnew=#tmp2.length from #tmp2 where #t***.tablename=#tmp2.tablename and
#t***.colname
=#tmp2.colname
select
*from
#t***
where xtypeold<>xtypenew or lengthold<>
lengthnew
drop
table
#tmp1
drop
table
#tmp2
drop
table #t***
比較兩個資料庫的表結構差異
比較兩個資料庫的表結構差異 鄒建 2003.9 引用請保留此資訊 呼叫示例 exec p comparestructure xzkh model xzkh new if exists select from dbo.sysobjects where id object id n dbo p comp...
比較兩個資料庫的表結構差異
比較兩個資料庫的表結構差異 鄒建 2003.9 引用請保留此資訊 呼叫示例 exec p comparestructure xzkh model xzkh new if exists select from dbo.sysobjects where id object id n dbo p comp...
比較兩個資料庫的表結構差異
比較兩個資料庫的表結構差異 鄒建 2003.9 引用請保留此資訊 呼叫示例 exec p comparestructure xzkh model xzkh new if exists select from dbo.sysobjects where id object id n dbo p comp...