Sql group rows with the same value and put that value in the header?

Question

I want to group rows with SQL, my result set is as follows

name size date
data1 123 12/03/2009
data1 124 09/15/2009
data2 333
09/02/2010 data2 323 02/11/2010
data2 673 02/09/2014
data2 444 05/05/2010

I want to group the result set as follows:

data1
  123 12/03/2009
  124 09/15/2009
data2
  333
  09/02/2010 323 02/11/2010
  673 09/02/2014
  444 05/01/2010

can this be done using pure SQL?

Greetings.

Answer 1

GROUP BY WITH ROLLUP ( - actaully GROUP BY )

http://dev.mysql.com/doc/refman/5.0/en/group-by-modifiers.html

http://chiragrdarji.wordpress.com/2008/09/09/group-by-cube-rollup-and-sql-server-2005/

http://databases.about.com/od/sql/l/aacuberollup.htm

http://www.adp-gmbh.ch/ora/sql/group_by/group_by_rollup.html

http://msdn.microsoft.com/en-us/library/bb522495.aspx

Lieven:

DECLARE @Table TABLE (
     name varchar(32)
    ,Size integer
    ,Date datetime
    )

INSERT  INTO @Table
VALUES  ('data1', 123, GETDATE())
INSERT  INTO @Table
VALUES  ('data1', 124, GETDATE())
INSERT  INTO @Table
VALUES  ('data2', 333, GETDATE())
INSERT  INTO @Table
VALUES  ('data2', 323, GETDATE())
INSERT  INTO @Table
VALUES  ('data2', 673, GETDATE())
INSERT  INTO @Table
VALUES  ('data2', 444, GETDATE())

SELECT  *
FROM    (
         SELECT *
         FROM   @Table
         GROUP BY NAME
               ,size
               ,date
                WITH ROLLUP
        ) AS X
WHERE   NAME IS NOT NULL
        AND (
             (
              Size IS NOT NULL
              AND Date IS NOT NULL
             )
             OR (
                 Size IS NULL
                 AND date IS NULL
                )
            )
ORDER BY NAME
       ,size
       ,date

Answer 2

, , , ,

DECLARE @Table TABLE (name VARCHAR(32), Size INTEGER, Date DATETIME)

INSERT INTO @Table VALUES ('data1', 123, getdate())
INSERT INTO @Table VALUES ('data1', 124, getdate())
INSERT INTO @Table VALUES ('data2', 333, getdate())
INSERT INTO @Table VALUES ('data2', 323, getdate())
INSERT INTO @Table VALUES ('data2', 673, getdate())
INSERT INTO @Table VALUES ('data2', 444, getdate())

INSERT INTO @Table 
SELECT DISTINCT name, NULL, NULL
FROM @Table

SELECT 
  CASE WHEN Size IS NULL THEN Name ELSE NULL END
  , Size
  , Date
FROM @Table
ORDER BY Name, Size

Answer 3

, , , , - .

Lieven ( , ) , . .

data1   NULL    NULL
NULL    123 2011-05-24 19:42:29.577
NULL    124 2011-05-24 19:42:29.577
data2   NULL    NULL
NULL    323 2011-05-24 19:42:29.577
NULL    333 2011-05-24 19:42:29.577
NULL    444 2011-05-24 19:42:29.577
NULL    673 2011-05-24 19:42:29.577

- , 0. .

INSERT INTO @Table VALUES ('data2', NULL, getdate())

. -.

data1   NULL    NULL
NULL    123 2011-05-24 19:53:36.437
NULL    124 2011-05-24 19:53:36.437
data2   NULL    NULL
data2   NULL    2011-05-24 19:53:36.440
NULL    323 2011-05-24 19:53:36.440
NULL    333 2011-05-24 19:53:36.440
NULL    444 2011-05-24 19:53:36.440

Roux ROLLUP , , SQL Server. , .

data1   NULL    NULL
data1   NULL    NULL
data1   NULL    NULL
data1   123 2011-05-24 20:16:26.693
data1   124 2011-05-24 20:16:26.693
data2   NULL    NULL
data2   NULL    NULL
data2   NULL    NULL
data2   323 2011-05-24 20:16:26.693
data2   333 2011-05-24 20:16:26.693
data2   444 2011-05-24 20:16:26.693
data2   673 2011-05-24 20:16:26.693

PITIş ROWNUM Oracle ( , , , ), SQL Server ROW_NUMBER() OVER , .

SELECT 
    ROW_NUMBER() OVER(ORDER BY [name]) AS [rown]
    , name
    , ''
    , ''
FROM @Table
GROUP BY name

UNION ALL

SELECT ROW_NUMBER() OVER(ORDER BY [name]) + 1 AS [rown] , name, size, date 
FROM @Table 

data1   NULL    NULL
data1   NULL    NULL
data1   NULL    NULL
data1   123 2011-05-24 20:16:26.693
data1   124 2011-05-24 20:16:26.693
data2   NULL    NULL
data2   NULL    NULL
data2   NULL    NULL
data2   323 2011-05-24 20:16:26.693
data2   333 2011-05-24 20:16:26.693
data2   444 2011-05-24 20:16:26.693
data2   673 2011-05-24 20:16:26.693

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Answer 4

- :

select name, size, date from
(
-- select only distinct rows, and empty values for size and date (header rows)
select ROWNUM rown, name, '', ''
from T
group by name
order by name

union all

-- select all data (non-header records)
select ROWNUM+1 rown, name, size, date 
from T 
order by name
)
order by name, rown

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Answer 5

, / .

SELECT DISTINCT(name) AS group_name FROM TABLE ORDER BY name LIMIT 5;

SELECT size, date FROM TABLE WHERE name IN ('comma separated group_name values from firstQueryResult');

for every row in firstQueryResult{
    group_array[group_name] = secondQueryResult;
}

The resulting group_array will look like this:

data1
  123  12/03/2009
  124  15/09/2009
data2
  333  02/09/2010
  323  02/11/2010
  673  02/09/2014
  444  05/01/2010