sql server - TSQL transform row values into one column table -


source table

col1  |col2  |col3  |col4  | col5 ----------------------------------  hi   | |   |    | test

destination table

rowvalues| ---------- hi test

i using dynamic sql. ?

this code , change table name , id in clause suits you

declare @sql nvarchar(max), @tablename  nvarchar(100), @where nvarchar(max) set @tablename = 'stockitems'  set @where= ' id = 2' select @sql  ='select ' select  @sql = @sql+  + ' '''+ [name] +' = ''+ cast(' + [name]  + ' nvarchar(10)) '+[name]+',  '           sys.columns object_name (object_id) = @tablename   set @sql = stuff(@sql, len(@sql), 1, '')  +  ' '+@tablename+ @where print @sql set @sql = replace(@sql,',   from',' from') set @sql = @sql + '  ' print @sql exec(@sql)

now need create new table has 1 column hold holds each value row

thanks @mahmoud-gamal solution should below 

declare @cols nvarchar(max) select @cols = stuff((select distinct ',' +                         quotename(column_name)                       information_schema.columns                       table_name = 'vehicles'                        xml path(''), type                      ).value('.', 'nvarchar(max)')                          , 1, 1, ''); declare @statement nvarchar(max) set @statement =' select     columnname,  value     vehicles unpivot     (     value     columnname     in         (         '+@cols+'         )     )     a'      execute(@statement)

please change "vehicle" table name table on database has columns different types (datetime, int , nvarchar) , below error shown ? the type of column "description" conflicts type of other columns specified in unpivot list.

use unpivot table operator:

select col rowvalues table1 t unpivot (   col   value in([col1],                 [col2],                 [col3],               [col4],               [col5]) ) u;

this give you:

| rowvalues | |-----------| |        hi | |      | |        | |         | |      test |

update:

in case don't know names of columns, , want dynamically, have using dynamic sql.

but problem how columns names?

you can columns names information_schema.columns, concatenate them in 1 sql, replace columns' names in unpivot string, , execute statement dynamically this:

declare @cols nvarchar(max); declare @query nvarchar(max);  select @cols = stuff((select distinct ',' +                         quotename(column_name)                       information_schema.columns                       table_name = 'table1'                       xml path(''), type                      ).value('.', 'nvarchar(max)')                          , 1, 1, '');  select @query = ' select col rowvalues                   table1 t                   unpivot                   (                   val                   col in ( ' + @cols + ' )                   ) u;';  execute(@query);

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