导入/导出dBase

从dBase文件中,导入数据到SQL数据库中,很简单,直接用下面的语句:

/*===================================================================*/
--如果接受数据导入的表已经存在
insert into 表 select * from
openrowset(@#MICROSOFT.JET.OLEDB.4.0@#
,@#dBase 5.0;DATABASE=c:\@#,@#select * from [test.dbf]@#)

--如果导入数据并生成表
select * into 表 from
openrowset(@#MICROSOFT.JET.OLEDB.4.0@#
,@#dBase 5.0;DATABASE=c:\@#,@#select * from [test.dbf]@#)


/*===================================================================*/
--如果从SQL数据库中,导出数据到dBase,如果dBase文件已经存在,就可以简单的用:
insert into
openrowset(@#MICROSOFT.JET.OLEDB.4.0@#
,@#dBase 5.0;DATABASE=c:\@#,@#select * from [test.dbf]@#)
select * from 表


/*--说明:
DATABASE=c:\               c:\是dbf文件的存放目录
@#select * from [test.dbf]  test.dbf是指dbf文件名
--*/

 

--如果dBase文件不存在,就需要用到下面的存储过程了.



/*--数据导出dBase
 
 导出表中的数据到dBase,如果文件不存在,将自动创建文件
 基于通用性考虑,仅支持导出标准数据类型
--*/

/*--调用示例

 --导出dBase
 p_exporttb @tbname=@#地区资料@#,@path=@#c:\@#,@over=0
--*/
if exists (select * from dbo.sysobjects where id = object_id(N@#[dbo].[p_exporttb]@#) and OBJECTPROPERTY(id, N@#IsProcedure@#) = 1)
drop procedure [dbo].[p_exporttb]
GO

create proc p_exporttb
@tbname sysname,    --要导出的表名
@path nvarchar(1000),   --文件存放目录
@fname nvarchar(250)=@#@#,  --文件名,默认为表名
@over bit=0      --是否覆盖已经存在的文件,如果不覆盖,则直接追加
as
declare @err int,@src nvarchar(255),@desc nvarchar(255),@out int
declare @obj int,@constr nvarchar(1000),@sql varchar(8000),@fdlist varchar(8000)

--参数检测
if isnull(@fname,@#@#)=@#@# set @fname=@tbname+@#.dbf@#

--检查文件是否已经存在
if right(@path,1)<>@#\@# set @path=@path+@#\@#
create table #tb(a bit,b bit,c bit)
set @sql=@path+@fname
insert into #tb exec master..xp_fileexist @sql
if exists(select 1 from #tb where a=1)
 if @over=1
 begin
  set @sql=@#del @#+@sql
  exec master..xp_cmdshell @sql,no_output
 end
 else
  set @over=0
else
 set @over=1

--数据库创建语句
set @sql=@path+@fname
set @constr=@#Provider=Microsoft.Jet.OLEDB.4.0;Extended Properties="dBASE 5.0;@#
 +@#;HDR=NO;DATABASE=@#+@path+@#"@#

--连接数据库
exec @err=sp_oacreate @#adodb.connection@#,@obj out
if @err<>0 goto lberr

exec @err=sp_oamethod @obj,@#open@#,null,@constr
if @err<>0 goto lberr

--创建表的SQL
select @sql=@#@#,@fdlist=@#@#
select @fdlist=@fdlist+@#,@#+a.name
 ,@sql=@sql+@#,[@#+a.name+@#] @#
  +case when b.name in(@#char@#,@#nchar@#,@#varchar@#,@#nvarchar@#) then
     @#text(@#+cast(case when a.length>250 then 250 else a.length end as varchar)+@#)@#
   when b.name in(@#tynyint@#,@#int@#,@#bigint@#,@#tinyint@#) then @#int@#
   when b.name in(@#smalldatetime@#,@#datetime@#) then @#datetime@#
   when b.name in(@#money@#,@#smallmoney@#) then @#money@#
   else b.name end
FROM syscolumns a left join systypes b on a.xtype=b.xusertype
where b.name not in(@#image@#,@#text@#,@#uniqueidentifier@#,@#sql_variant@#,@#ntext@#,@#varbinary@#,@#binary@#,@#timestamp@#)
 and object_id(@tbname)=id
select @sql=@#create table [@#+@fname
 +@#](@#+substring(@sql,2,8000)+@#)@#
 ,@fdlist=substring(@fdlist,2,8000)

if @over=1
begin
 exec @err=sp_oamethod @obj,@#execute@#,@out out,@sql
 if @err<>0 goto lberr
end

exec @err=sp_oadestroy @obj

set @sql=@#openrowset(@#@#MICROSOFT.JET.OLEDB.4.0@#@#,@#@#dBase 5.0;DATABASE=@#
 +@path+@#@#@#,@#@#select * from [@#+@fname+@#]@#@#)@#

--导入数据
exec(@#insert into @#+@sql+@#(@#+@fdlist+@#) select @#+@fdlist+@# from @#+@tbname)

return

lberr:
 exec sp_oageterrorinfo 0,@src out,@desc out
lbexit:
 select cast(@err as varbinary(4)) as 错误号
  ,@src as 错误源,@desc as 错误描述
 select @sql,@constr,@fdlist

go

 

 


/*--数据导出dBase
 
 导出查询语句中的数据到dBase,如果文件不存在,将自动创建文件
 基于通用性考虑,仅支持导出标准数据类型
--*/

/*--调用示例

 --导出dBase
 p_exporttb @sqlstr=@#select * from 地区资料@#,@path=@#c:\@#,@over=1
--*/

if exists (select * from dbo.sysobjects where id = object_id(N@#[dbo].[p_exporttb]@#) and OBJECTPROPERTY(id, N@#IsProcedure@#) = 1)
drop procedure [dbo].[p_exporttb]
GO

create proc p_exporttb
@sqlstr varchar(8000),   --要导出的查询名
@path nvarchar(1000),   --文件存放目录
@fname nvarchar(250)=@#temp.dbf@#,--文件名,默认为temp
@over bit=0      --是否覆盖已经存在的文件,如果不覆盖,则直接追加
as
declare @err int,@src nvarchar(255),@desc nvarchar(255),@out int
declare @obj int,@constr nvarchar(1000),@sql varchar(8000),@fdlist varchar(8000)

--参数检测
if isnull(@fname,@#@#)=@#@# set @fname=@#temp.dbf@#

--检查文件是否已经存在
if right(@path,1)<>@#\@# set @path=@path+@#\@#
create table #tb(a bit,b bit,c bit)
set @sql=@path+@fname
insert into #tb exec master..xp_fileexist @sql
if exists(select 1 from #tb where a=1)
 if @over=1
 begin
  set @sql=@#del @#+@sql
  exec master..xp_cmdshell @sql,no_output
 end
 else
  set @over=0
else
 set @over=1

--数据库创建语句
set @sql=@path+@fname
set @constr=@#Provider=Microsoft.Jet.OLEDB.4.0;Extended Properties="dBASE 5.0;@#
 +@#;HDR=NO;DATABASE=@#+@path+@#"@#

--创建表的SQL
declare @tbname sysname
set @tbname=@###tmp_@#+convert(varchar(38),newid())
set @sql=@#select * into [@#+@tbname+@#] from(@#+@sqlstr+@#) a@#
exec(@sql)

--连接数据库
exec @err=sp_oacreate @#adodb.connection@#,@obj out
if @err<>0 goto lberr

exec @err=sp_oamethod @obj,@#open@#,null,@constr
if @err<>0 goto lberr

--创建表的SQL
select @sql=@#@#,@fdlist=@#@#
select @fdlist=@fdlist+@#,@#+a.name
 ,@sql=@sql+@#,[@#+a.name+@#] @#
  +case when b.name in(@#char@#,@#nchar@#,@#varchar@#,@#nvarchar@#) then
     @#text(@#+cast(case when a.length>250 then 250 else a.length end as varchar)+@#)@#
   when b.name in(@#tynyint@#,@#int@#,@#bigint@#,@#tinyint@#) then @#int@#
   when b.name in(@#smalldatetime@#,@#datetime@#) then @#datetime@#
   when b.name in(@#money@#,@#smallmoney@#) then @#money@#
   else b.name end
FROM tempdb..syscolumns a left join tempdb..systypes b on a.xtype=b.xusertype
where b.name not in(@#image@#,@#text@#,@#uniqueidentifier@#,@#sql_variant@#,@#ntext@#,@#varbinary@#,@#binary@#,@#timestamp@#)
 and a.id=(select id from tempdb..sysobjects where name=@tbname)
select @sql=@#create table [@#+@fname
 +@#](@#+substring(@sql,2,8000)+@#)@#
 ,@fdlist=substring(@fdlist,2,8000)

if @over=1
begin
 exec @err=sp_oamethod @obj,@#execute@#,@out out,@sql
 if @err<>0 goto lberr
end

exec @err=sp_oadestroy @obj

set @sql=@#openrowset(@#@#MICROSOFT.JET.OLEDB.4.0@#@#,@#@#dBase 5.0;DATABASE=@#
 +@path+@#@#@#,@#@#select * from [@#+@fname+@#]@#@#)@#

--导入数据
exec(@#insert into @#+@sql+@#(@#+@fdlist+@#) select @#+@fdlist+@# from [@#+@tbname+@#]@#)

set @sql=@#drop table [@#+@tbname+@#]@#
exec(@sql)

return

lberr:
 exec sp_oageterrorinfo 0,@src out,@desc out
lbexit:
 select cast(@err as varbinary(4)) as 错误号
  ,@src as 错误源,@desc as 错误描述
 select @sql,@constr,@fdlist
go

 

原文转自：http://www.ltesting.net