计算机三级数据库辅导:将表数据生成SQL脚本的存储过程和工具

来源:微学计算机考试频道发布时间:2008-08-22
将表数据生成SQL脚本的存储过程示例:
  CREATE PROCEDURE dbo.UspOutputData @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 'The object not exists'
  return
  end
  set @objectname=rtrim(object_name(@objectId))
  if @objectname is null or charindex(@objectname,@tablename)=0 --此判断不严密
  begin
  print 'object not in current database'
  return
  end
  if OBJECTPROPERTY(@objectId,'IsTable') < > 1 -- 判断对象是否是table
  begin
  print 'The object is not table'
  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'
  declare syscolumns_cursor cursor
  for select c.name,c.xtype from syscolumns c where c.id=@objectid order by c.colid
  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)
  if @ident is not null
  print 'SET IDENTITY_INSERT '+@TableName+' OFF'
  GO
  exec UspOutputData 你的表名
  工具介绍:
  1 InstallShield自带一个把SQL数据库的结构和数据导出为脚本的功能,很好用,如果刚好要做打包,建议用这个,因为安装文件比较大,如果不是做打包不建议用。
  2 SqlInsert是一个专门导出数据为脚本的小工具,速度没IS的快,但是一样好用