SQLServer范例之间克隆表

SQLServer实例之间克隆表

场景：两个SQLServer实例（可能在不同机器上）

（1）实例1 ：　SarahCla

（2）实例2： CloneServer

目标：将SarahCla中的某些表的结构及数据克隆到CloneServer中

step 1：在CloneServer中建立SarahCla的linkserver，执行语句如下

Exec sp_droplinkedsrvlogin [SARAHCLA],Null

EXEC sp_addlinkedserver
@server='SARAHCLA',
@srvproduct='',
@provider='SQLOLEDB',
@datasrc="SarahCla"

EXEC sp_addlinkedsrvlogin
'SARAHCLA',
'false',
NULL,
'sa', --帐号
'XXXXX' --密码嚯嚯，差点忘了删密码 SQLServer范例之间克隆表

step 2: 在SarahCla 实例中相应的数据库中创建存储过程，获取table的创建语句。

（linkserver直接select * into 会丢掉一些列的property，例如identity）

create procedure SP_GET_TABLE_INFO
@ObjName varchar(128),
@sql nvarchar(4000) output,
@cols nvarchar(4000) output
as

declare @Script varchar(255)
declare @ColName varchar(30)
declare @ColID TinyInt
declare @UserType smallint
declare @TypeName sysname
declare @Length TinyInt
declare @Prec TinyInt
declare @Scale TinyInt
declare @Status TinyInt
declare @cDefault int
declare @DefaultID TinyInt
declare @Const_Key varchar(255)
declare @IndID SmallInt
declare @IndStatus Int
declare @Index_Key varchar(255)
declare @DBName varchar(30)
declare @strPri_Key varchar (255)

if not Exists(Select name from sysobjects where name = @ObjName)
begin
select @DBName = db_name()
raiserror(15009,-1,-1,@ObjName,@DBName)
return (1)
end

create table #spscript
(
id int IDENTITY not null,
Script Varchar(255) NOT NULL,
LastLine tinyint
)

declare Cursor_Column INSENSITIVE CURSOR
for Select a.name,a.ColID,a.usertype,b.name,a.length,a.prec,a.scale,a.Status, a.cDefault,
case a.cdefault when 0 then ' ' else (select c.Text from syscomments c where a.cdefault = c.id) end const_key
from syscolumns a, systypes b where object_name(a.id) = @ObjName
and a.usertype = b.usertype order by a.ColID

set nocount on
Select @Script = 'Create table ' + @ObjName + '('
Insert into #spscript values(@Script,0)

/* Get column information */
open Cursor_Column

fetch next from Cursor_Column into @ColName,@ColID,@UserType,@TypeName,@Length,@Prec,@Scale,
@Status,@cDefault,@Const_Key

Select @Script = ''
while (@@FETCH_STATUS <> -1)
begin
if (@@FETCH_STATUS <> -2)
begin

if (@cols='')
set @cols = @ColName
else
set @cols = @cols + ',' + @Colname

Select @Script = @ColName + ' ' + @TypeName

if @UserType in (1,2,3,4)
Select @Script = @Script + '(' + Convert(char(3),@Length) + ') '
else if @UserType in (24)
Select @Script = @Script + '(' + Convert(char(3),@Prec) + ','
+ Convert(char(3),@Scale) + ') '
else
Select @Script = @Script + ' '
if ( @Status & 0x80 ) > 0
Select @Script = @Script + ' IDENTITY(1,1) '

if ( @Status & 0x08 ) > 0
Select @Script = @Script + ' NULL '
else
Select @Script = @Script + ' NOT NULL '
if @cDefault > 0
Select @Script = @Script + ' DEFAULT ' + @Const_Key
end
fetch next from Cursor_Column into @ColName,@ColID,@UserType,@TypeName,@Length,@Prec,@Scale, @Status,@cDefault,@Const_Key
if @@FETCH_STATUS = 0
begin
Select @Script = @Script + ','
Insert into #spscript values(@Script,0)
end
else
begin
Insert into #spscript values(@Script,1)
Insert into #spscript values(')',0)
end
end
Close Cursor_Column
Deallocate Cursor_Column

/* Get index information */
Declare Cursor_Index INSENSITIVE CURSOR for
Select name,IndID,status
from sysindexes
where object_name(id)=@ObjName and IndID > 0 and IndID<>255
order by IndID
Open Cursor_Index
Fetch Next from Cursor_Index into @ColName, @IndID, @IndStatus
while (@@FETCH_STATUS <> -1)
begin
if @@FETCH_STATUS <> -2
begin

declare @i TinyInt
declare @thiskey varchar(50)
declare @IndDesc varchar(68)

Select @i = 1
while (@i <= 16)
begin
select @thiskey = index_col(@ObjName, @IndID, @i)
if @thiskey is null
break

if @i = 1
select @Index_Key = index_col(@ObjName, @IndID, @i)
else
select @Index_Key = @Index_Key + ', ' + index_col(@ObjName, @IndID, @i)
select @i = @i + 1
end
if (@IndStatus & 0x02) > 0
Select @Script = 'Create unique '
else
Select @Script = 'Create '
if @IndID = 1
select @Script = @Script + ' clustered '

if (@IndStatus & 0x800) > 0
select @strPri_Key = ' PRIMARY KEY (' + @Index_Key + ')'
else
select @strPri_Key = ''

if @IndID > 1
select @Script = @Script + ' nonclustered '
Select @Script = @Script + ' index ' + @ColName + ' ON '+ @ObjName
+ '(' + @Index_Key + ')'
Select @IndDesc = ''
if @IndStatus & 0x01 = 0x01
Select @IndDesc = @IndDesc + ' IGNORE_DUP_KEY' + ','
if @IndStatus & 0x40 = 0x40
Select @IndDesc = @IndDesc + ' ALLOW_DUP_ROW' + ','
if @IndDesc <> ''
begin
Select @IndDesc = SubString( @IndDesc, 1, DataLength(@IndDesc) - 1 )
Select @Script = @Script + ' WITH ' + @IndDesc
end
end
if (@strPri_Key = '')
Insert into #spscript values(@Script,0)
else
update #spscript set Script = Script + @strPri_Key where LastLine = 1

Fetch Next from Cursor_Index into @ColName, @IndID, @IndStatus
end
Close Cursor_Index
Deallocate Cursor_Index

declare @line varchar(8000)
set @sql = ''
Declare Cursor_sql CURSOR for Select script from #spscript
Open Cursor_sql
Fetch Next from Cursor_sql into @line
while (@@FETCH_STATUS <> -1)
begin
set @sql = @sql + ' ' + @line
Fetch Next from Cursor_sql into @line
end
Close Cursor_sql
Deallocate Cursor_sql

set nocount off

return (0)

step 3: 在CloneServer 上创建执行克隆任务的存储过程

create procedure tableClone
@table nvarchar(1000)
As
begin
declare @sql nvarchar(4000);
declare @cols nvarchar(4000);
set @cols=''
execute [SarahCla].master.dbo.SP_GET_TABLE_INFO @table, @sql output, @cols output;

--SarahCla记得改成自己的linkserver name

--master 改成自己要克隆的表所在库的名称

execute sp_executesql @sql;
set @sql = ' set identity_insert tb3 on; insert into ' + @table + '(' + @cols + ')
select ' + @cols + ' From [SarahCla\Sarahcla2008].master.dbo.' + @table + ' set identity_insert ' + @table + ' off '
execute sp_executesql @sql;
end

step 4: 克隆表

例如：要克隆 tb3

execute tableClone 'tb3'

SQLServer范例之间克隆表，如果要克隆所有表，遍历sysobjects执行哈，这里就不写了。。。（懒人一个）

1楼muroachanf昨天 14:20: 你这也算懒人的话，我才真的是太不勤劳了

SQLServer范例之间克隆表

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