DBGridEH导入excel
两个DBGridEH里面的数据导入同一张表
[解决办法]
使用存储过程在后台导入比较快一些。
存储过程内容如下：
CREATE procedure P_ExportDBTOExcel
@FSQLStr varchar(8000), --查询执行语句
@FFilePath varchar(1000), --导出的Excel文件存储路径，默认为C盘跟目录
@FFileName varchar(200), --导出的excel文件名称
@FSheetName varchar(200) = ' ' --要创建的工作表名称，默认为文件名称
as
declare @err int, @Src nvarchar(255), @Desc nvarchar(255), @out int
declare @obj int, @Constr nvarchar(1000), @sql varchar(8000), @Fdlist varchar(8000)
--参数检查
if isnull(@fFilename, ' ') = ' ' select @FFileName = 'temp.xls '
if isnull(@FSheetName, ' ') = ' ' select @FSheetName = replace(@FFileName, '. ', '# ')
--检查文件是否已经存在
if right(@FFilePath,1) <> '\ ' select @FFilePath = @FFilePath + '\ '
create table #temp(a bit,b bit,c bit)
set @Sql = @FFilePath + @FFileName
insert into #Temp exec master..xp_fileexist @sql
--数据库创建语句
set @sql=@FFilepath+@fFilename
if exists(select 1 from #temp where a=1)
set @constr= 'DRIVER={Microsoft Excel Driver (*.xls)};DSN= ' ' ' ';READONLY=FALSE '
+ ';CREATE_DB= " '+@sql+ ' ";DBQ= '+@sql
else
set @constr= 'Provider=Microsoft.Jet.OLEDB.4.0;Extended Properties= "Excel 8.0;HDR=YES '
+ ';DATABASE= '+@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
declare @TbName sysname
set @TbName = '##tmp_ '+convert(varchar(38),newid())
set @sql = 'select * into [ '+@TbName+ '] from( '+@fsqlstr+ ') a '
exec(@Sql)
select @sql = ' ', @fdList = ' '
select @FdList = @FdList + ',[ '+a.name+ '] ',
@Sql = @Sql + ',[ '+a.name+ '] ' +
case when b.name like '%char ' then case when a.length > 255 then 'memo ' else 'text( '+cast(a.length as varchar)+ ') ' end
when b.name like '%int ' or b.name = 'bit ' then 'int '
when b.name like '%datetime ' then 'datetime '
when b.name like '%money ' then 'money '
when b.name like '%text ' then 'memo ' else b.name end
from tempdb..syscolumns a left join tempdb..systypes b on a.xtype = b.xusertype
where b.name not in( 'image ', 'uniqueidentifier ', 'sql_variant ', 'varbinary ', 'binary ', 'timestamp ')
and a.id = (select id from tempdb..sysobjects where name = @tbname)
if @@Rowcount = 0 return
select @sql = 'create table [ '+@FSheetName+ ']( '+substring(@sql,2,8000)+ ') ',
@Fdlist = substring(@fdlist,2,8000)
exec @err = sp_oamethod @obj, 'execute ',@out out,@sql
if @err <> 0 goto lberr
exec @err = sp_oadestroy @obj
--将查询数据导入到excel表中
set @sql= 'openrowset( ' 'MICROSOFT.JET.OLEDB.4.0 ' ', ' 'Excel 8.0;HDR=YES
;DATABASE= '+@FFilepath+@fFilename+ ' ' ',[ '+@Fsheetname+ '$]) '
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
[解决办法]
建立存储过程后你可以使用
exec P_ExportDBTOExcel
@FSqlstr = 'select * from sysobjects where xtype = ' 'U ' ' ',
@FFilePath = 'C:\backuptest ',
@FFileName = 'test.xls ',
@FSheetName = 'dddff '
其中参数@FSqlstr你可以手工写入或者通过dbgrideh.datasource.dataset.sql.text调用
