根据表中数据生成insert语句的存储过程

有个缺点……就是标识种子的列 也insert了

CREATE   proc spGenInsertSQL (@tablename varchar(256))

as

begin

declare @sql varchar(8000)

declare @sqlValues varchar(8000)

set @sql =' ('

set @sqlValues = 'values ('+'

select @sqlValues = @sqlValues + cols + ' + ',' + ' ,@sql = @sql + '[' + name + '],'

  from

      (select case

                when xtype in (48,52,56,59,60,62,104,106,108,122,127)                               

                     then 'case when '+ name +' is null then 'NULL' else ' + 'cast('+ name + ' as varchar)'+' end'

                when xtype in (58,61)

                     then 'case when '+ name +' is null then 'NULL' else '+''''' + ' + 'cast('+ name +' as varchar)'+ '+'''''+' end'

               when xtype in (167)

                     then 'case when '+ name +' is null then 'NULL' else '+''''' + ' + 'replace('+ name+','''','''''')' + '+'''''+' end'

                when xtype in (231)

                     then 'case when '+ name +' is null then 'NULL' else '+''N''' + ' + 'replace('+ name+','''','''''')' + '+'''''+' end'

                when xtype in (175)

                     then 'case when '+ name +' is null then 'NULL' else '+''''' + ' + 'cast(replace('+ name+','''','''''') as Char(' + cast(length as varchar)  + '))+'''''+' end'

                when xtype in (239)

                     then 'case when '+ name +' is null then 'NULL' else '+''N''' + ' + 'cast(replace('+ name+','''','''''') as Char(' + cast(length as varchar)  + '))+'''''+' end'

                else ''NULL''

              end as Cols,name

         from syscolumns 

        where id = object_id(@tablename)

      ) T

set @sql ='select 'INSERT INTO ['+ @tablename + ']' + left(@sql,len(@sql)-1)+') ' + left(@sqlValues,len(@sqlValues)-4) + ')' from '+@tablename

--print @sql

exec (@sql)

end

GO