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patternsqlMinor

Implementing a PIVOT query

Submitted by: @import:stackexchange-dba··
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pivotimplementingquery

Problem

How can I pivot the following SELECT statement:

SELECT sc.CID,
                sc.CodeName     as OverviewText,
                scRAG.CodeName  as RAGStatusText 
           FROM StatusCode      sc
LEFT OUTER JOIN ProjectOverview po 
             ON sc.CID          = po.ProjectOverviewCID 
            AND po.ProjectId    = 180
LEFT OUTER JOIN StatusCode      scRAG 
             ON po.RAGStatusCID = scRAG.CID
          WHERE sc.SCID         = 18


Such statement yields the result set that follows:

CID OverviewText    RAGStatusText
--- ------------    -------------
153 Cost            Green
154 Requirements    Yellow
155 Schedule        NULL
156 Technical       NULL
157 Testing         NULL


But, I want it to return one single row with 10 values, as shown bellow:

----------------------------------------------------------------------------------------------
 | Cost | Green | Requirements | Yellow | Schedule | NULL | Technical | NULL | Testing | NULL |
 ----------------------------------------------------------------------------------------------


Can I pivot on CID?

Solution

I'm not sure if that is exactly what you want. But It gives your expected result. Note you can rename the columns as you please.

SET NOCOUNT ON

declare @t table(
    cid int,
    OverviewText varchar(15),
    RAGStatusText varchar(15)
 )

insert into @t values (153, 'Cost',           'Green');
insert into @t values (154, 'Requirements',   'Yellow');
insert into @t values (155, 'Schedule',       'NULL');
insert into @t values (156, 'Technical',      'NULL');
insert into @t values (157, 'Testing',        'NULL');

Select 
    [153|1] as [xyz],
    [153|2],
    [154|1],
    [154|2],
    [155|1],
    [155|2],
    [156|1],
    [156|2],
    [157|1],
    [157|2]

FROM (
select CAST(cid as varchar) + '|1' type, OverviewText  text from @t
Union
select CAST(cid as varchar) + '|2' type, RAGStatusText text from @t
) as SourceTable
Pivot(
    min(text)
    for type in ([153|1],[153|2], [154|1],[154|2], [155|1],[155|2], [156|1],[156|2], [157|1],[157|2])
) as PivotTable;

Code Snippets

SET NOCOUNT ON

declare @t table(
    cid int,
    OverviewText varchar(15),
    RAGStatusText varchar(15)
 )

insert into @t values (153, 'Cost',           'Green');
insert into @t values (154, 'Requirements',   'Yellow');
insert into @t values (155, 'Schedule',       'NULL');
insert into @t values (156, 'Technical',      'NULL');
insert into @t values (157, 'Testing',        'NULL');


Select 
    [153|1] as [xyz],
    [153|2],
    [154|1],
    [154|2],
    [155|1],
    [155|2],
    [156|1],
    [156|2],
    [157|1],
    [157|2]

FROM (
select CAST(cid as varchar) + '|1' type, OverviewText  text from @t
Union
select CAST(cid as varchar) + '|2' type, RAGStatusText text from @t
) as SourceTable
Pivot(
    min(text)
    for type in ([153|1],[153|2], [154|1],[154|2], [155|1],[155|2], [156|1],[156|2], [157|1],[157|2])
) as PivotTable;

Context

StackExchange Database Administrators Q#1181, answer score: 3

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