SQL Server 开发之复制表数据的SQL脚本生成器
添加时间:2013-5-16 17:21:27
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使用SQL Server 2000自带的“生成SQL脚本”工具,可以生成创建表、视图、存储过程等的SQL脚本。那么,能否将表中的数据也生成为SQL脚本,在查询分析器中执行这些脚本后自动将数据导入到SQL Server中呢?答案是肯定的。
下面的存储过程是一位高人写的,这位高人的姓氏已无人知晓,但SQL Server社区中偶尔还可看到此不朽之作。
CREATE PROCEDURE dbo.OutputData
@tablename sysname
AS
declare @column varchar(1000)
declare @columndata varchar(1000)
declare @sql varchar(4000)
declare @xtype tinyint
declare @name sysname
declare @objectId int
declare @objectname sysname
declare @ident int
set nocount on
set @objectId=object_id(@tablename)
if @objectId is null -- 判断对象是否存在
begin
print @tablename + '对象不存在'
return
end
@tablename sysname
AS
declare @column varchar(1000)
declare @columndata varchar(1000)
declare @sql varchar(4000)
declare @xtype tinyint
declare @name sysname
declare @objectId int
declare @objectname sysname
declare @ident int
set nocount on
set @objectId=object_id(@tablename)
if @objectId is null -- 判断对象是否存在
begin
print @tablename + '对象不存在'
return
end
set @objectname=rtrim(object_name(@objectId))
if @objectname is null or charindex(@objectname,@tablename)=0
begin
print @tablename + '对象不在当前数据库中'
return
end
if @objectname is null or charindex(@objectname,@tablename)=0
begin
print @tablename + '对象不在当前数据库中'
return
end
if OBJECTPROPERTY(@objectId,'IsTable') < > 1 -- 判断对象是否是表
begin
print @tablename + '对象不是表'
return
end
begin
print @tablename + '对象不是表'
return
end
select @ident=status&0x80 from syscolumns where id=@objectid and status&0x80=0x80
if @ident is not null
print 'SET IDENTITY_INSERT '+ @TableName + ' ON'
print 'SET IDENTITY_INSERT '+ @TableName + ' ON'
--定义游标,循环取数据并生成Insert语句
declare syscolumns_cursor cursor for
select c.name,c.xtype from syscolumns c
where c.id=@objectid
order by c.colid
declare syscolumns_cursor cursor for
select c.name,c.xtype from syscolumns c
where c.id=@objectid
order by c.colid
--打开游标
open syscolumns_cursor
set @column=''
set @columndata=''
fetch next from syscolumns_cursor into @name,@xtype
while @@fetch_status <> -1
begin
if @@fetch_status <> -2
begin
if @xtype not in(189,34,35,99,98) --timestamp不需处理,image,text,ntext,sql_variant 暂时不处理
begin
set @column=@column +
case when len(@column)=0 then ''
else ','
end + @name
set @columndata = @columndata +
case when len(@columndata)=0 then ''
else ','','','
end +
case when @xtype in(167,175) then '''''''''+'+@name+'+''''''''' --varchar,char
when @xtype in(231,239) then '''N''''''+'+@name+'+''''''''' --nvarchar,nchar
when @xtype=61 then '''''''''+convert(char(23),'+@name+',121)+''''''''' --datetime
when @xtype=58 then '''''''''+convert(char(16),'+@name+',120)+''''''''' --smalldatetime
when @xtype=36 then '''''''''+convert(char(36),'+@name+')+''''''''' --uniqueidentifier
else @name
end
end
end
fetch next from syscolumns_cursor into @name,@xtype
end
close syscolumns_cursor
deallocate syscolumns_cursor
open syscolumns_cursor
set @column=''
set @columndata=''
fetch next from syscolumns_cursor into @name,@xtype
while @@fetch_status <> -1
begin
if @@fetch_status <> -2
begin
if @xtype not in(189,34,35,99,98) --timestamp不需处理,image,text,ntext,sql_variant 暂时不处理
begin
set @column=@column +
case when len(@column)=0 then ''
else ','
end + @name
set @columndata = @columndata +
case when len(@columndata)=0 then ''
else ','','','
end +
case when @xtype in(167,175) then '''''''''+'+@name+'+''''''''' --varchar,char
when @xtype in(231,239) then '''N''''''+'+@name+'+''''''''' --nvarchar,nchar
when @xtype=61 then '''''''''+convert(char(23),'+@name+',121)+''''''''' --datetime
when @xtype=58 then '''''''''+convert(char(16),'+@name+',120)+''''''''' --smalldatetime
when @xtype=36 then '''''''''+convert(char(36),'+@name+')+''''''''' --uniqueidentifier
else @name
end
end
end
fetch next from syscolumns_cursor into @name,@xtype
end
close syscolumns_cursor
deallocate syscolumns_cursor
set @sql='set nocount on select ''insert '+@tablename+'('+@column+') values(''as ''--'','+@columndata+','')'' from '+@tablename
print '--'+@sql
exec(@sql)
exec(@sql)
if @ident is not null
print 'SET IDENTITY_INSERT '+@TableName+' OFF'
print 'SET IDENTITY_INSERT '+@TableName+' OFF'
调用时 exec OutputData 'myuser' 其中myUser中当前数据库中存在的表
关键字:SQL脚本、数据库
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