tsql - Converting Row to Column dynamically in SQL -


this question has answer here:

i have table below in microsoft sql server. want convert rows column.

my issue don't know result ahead , there can more 3 rows in result.

current table

id - function - result - masterkey 1  - 100      - 31     - 7 1  - 125      - 34     - 7 1  - 138      - 39     - 7 .  - .        - .      - . .  - .        - .      - .

desired result

masterkey - function1 - result1 - function2 - result2 - function3 - result3 - ... 7         - 100       - 31      - 125       - 34      - 138       - 39      - ...

how can achieve ? in advance.

you need create sql dynamically if have unknown number of functions/results:

declare @sql nvarchar(max) = '';  set @sql = 'select masterkey' +              (   select  ', function' + rownum + ' = max(case when rownumber = ' + rownum + ' [function] end)' +                          ', result' + rownum + ' = max(case when rownumber = ' + rownum + ' result end)'                    (   select  distinct                                      rownum = cast(row_number() on (partition masterkey                                                                          order [function])                                                      varchar(10))                                t                         ) t                 xml path(''), type             ).value('.', 'nvarchar(max)') +              ' (select masterkey, [function], result, rownumber = row_number() on (partition masterkey order [function]) t) t group masterkey';  execute sp_executesql @sql;

example on sql fiddle


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