列出SQL SERVER 所有表、字段定义，类型，长度，一个值等信息，并导出到Excel 中

2024-08-31 00:47:55

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set ansi_nulls off

go

set nocount on

go

set language 'simplified chinese'

go

declare @tbl nvarchar(200),@fld nvarchar(200),@sql nvarchar(4000),@maxlen int,@sample nvarchar(40)

select d.name tablename,a.name fieldname,b.name typename,a.length length,a.isnullable is_null into #t

from syscolumns a, systypes b,sysobjects d

where a.xtype=b.xusertype and a.id=d.id and d.xtype='u'

declare read_cursor cursor

for select tablename,fieldname from #t

select top 1 '_tablename                     ' tablename,

            'fieldname                      ' fieldname,'typename             ' typename,

            'length' length,'is_null' is_null,

            'maxlenused' as maxlenused,'sample value          ' sample,

             'comment   ' comment into #tc from #t

open read_cursor

fetch next from read_cursor into @tbl,@fld

while (@@fetch_status <> -1) --- failes

begin

       if (@@fetch_status <> -2) -- missing

       begin

              set @sql=n'set @maxlen=(select max(len(cast('[email protected]+' as nvarchar))) from '[email protected]+')'

              --print @sql

              exec sp_executesql @sql,n'@maxlen int output',@maxlen output

              --print @maxlen

              set @sql=n'set @sample=(select top 1 cast('[email protected]+' as nvarchar) from '[email protected]+' where len(cast('[email protected]+' as nvarchar))='+convert(nvarchar(5),@maxlen)+')'

              exec sp_executesql @sql,n'@sample varchar(30) output',@sample output

              --for quickly

              --set @sql=n'set @sample=convert(varchar(20),(select top 1 '[email protected]+' from '+

                     [email protected]+' order by 1 desc ))'

              print @sql

              print @sample

              print @tbl

              exec sp_executesql @sql,n'@sample nvarchar(30) output',@sample output

              insert into #tc select *,ltrim(isnull(@maxlen,0)) as maxlenused,

                     convert(nchar(20),ltrim(isnull(@sample,' '))) as sample,' ' comment from #t where [email protected] and [email protected]

       end

       fetch next from read_cursor into @tbl,@fld

end

close read_cursor

deallocate read_cursor

go

set ansi_nulls on

go

set nocount off

go

select count(*) from #t

drop table #t

go

select count(*)-1 from #tc

select * into ##tx from #tc order by tablename

drop table #tc

--select * from ##tx

declare @db nvarchar(60),@sql nvarchar(3000)

set @db=db_name()

--请修改用户名和口令导出到excel 中

set @sql='exec master.dbo.xp_cmdshell ''bcp ..dbo.##tx out c:/'[email protected]+'_exp.xls -w -c936 -

usa -psa '''

print @sql

exec(@sql)

go

drop table ##tx

go

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