Friday, March 23, 2012

Making a T-SQL Query

I have a table like below(bolds are field names)

R_IdNameQ1Q2Q3Q4Q5

M001Mikeabcde

J001 Johnabcde

P001 Peterabcde

I want results based on above table as below. The columns (Q1 to Q5) are put as Question_id for each user like M001 and Question (a, b ,c,d,e ) as column Question exactly as below.

Could anyone help me please writing the script to achieve below from above table.

Result

R_idNameQuestion_idQuestion

M001MikeQ1a

M001MikeQ2b

M001MikeQ3c

M001MikeQ4d

M001MikeQ5e

J001JohnQ1a

J001JohnQ2b

J001JohnQ3c

J001JohnQ4d

J001JohnQ5e

........ ....... ....... ....

Thanks all

If you use sql server 2005,

Code Snippet

Create Table #data (

[R_Id] Varchar(100) ,

[Name] Varchar(100) ,

[Q1] Varchar(100) ,

[Q2] Varchar(100) ,

[Q3] Varchar(100) ,

[Q4] Varchar(100) ,

[Q5] Varchar(100)

);

Insert Into #data Values('M001','Mike','a','b','c','d','e');

Insert Into #data Values('J001','John','a','b','c','d','e');

Insert Into #data Values('P001','Peter','a','b','c','d','e');

Select

R_Id

,Name

,Question_id

,Question

From

#Data

UNPIVOT

(

Question For Question_idin

([Q1],[Q2],[Q3],[Q4],[Q5])

) UPVT

|||

Assuming you are using SQL 2005, you need to use the UNPIVOT operator.

The code will be something like this:

Code Snippet


DECLARE @.MyTable table
( R_Id varchar(10),
Name varchar(20),
Q1 char(1),
Q2 char(1),
Q3 char(1),
Q4 char(1),
Q5 char(1)
)


INSERT INTO @.MyTable VALUES ( 'M001', 'Mike', 'a', 'b', 'c', 'd', 'e' )
INSERT INTO @.MyTable VALUES ( 'J001', 'John', 'a', 'b', 'c', 'd', 'e' )
INSERT INTO @.MyTable VALUES ( 'P001', 'Peter', 'a', 'b', 'c', 'd', 'e' )


SELECT
R_ID,
Name,
Question
FROM @.MyTable
UNPIVOT
( Question FOR Response
IN ( Q1, Q2, Q3, Q4, Q5 )
) unPvt

R_ID Name Question Response
- -- --
M001 Mike Q1 a
M001 Mike Q2 b
M001 Mike Q3 c
M001 Mike Q4 d
M001 Mike Q5 e
J001 John Q1 a
J001 John Q2 b
J001 John Q3 c
J001 John Q4 d
J001 John Q5 e
P001 Peter Q1 a
P001 Peter Q2 b
P001 Peter Q3 c
P001 Peter Q4 d
P001 Peter Q5 e

|||

If you use sql server 2000

Code Snippet

Create Table #data (

[R_Id] Varchar(100) ,

[Name] Varchar(100) ,

[Q1] Varchar(100) ,

[Q2] Varchar(100) ,

[Q3] Varchar(100) ,

[Q4] Varchar(100) ,

[Q5] Varchar(100)

);

Insert Into #data Values('M001','Mike','a','b','c','d','e');

Insert Into #data Values('J001','John','a','b','c','d','e');

Insert Into #data Values('P001','Peter','a','b','c','d','e');

Select R_Id,Name,'Q1' Question_id,[Q1] Question From #Data

Union All

Select R_Id,Name,'Q2' Question_id,[Q2] Question From #Data

Union All

Select R_Id,Name,'Q3' Question_id,[Q3] Question From #Data

Union All

Select R_Id,Name,'Q4' Question_id,[Q4] Question From #Data

Union All

Select R_Id,Name,'Q5' Question_id,[Q5] Question From #Data

|||

Arnie, Missed column...

SELECT
R_ID,
Name,
Response,
Question
FROM @.MyTable
UNPIVOT
( Question FOR Response
IN ( Q1, Q2, Q3, Q4, Q5 )
) unPvt

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